In this review, we will consider on-screen rulers, tape measures, levels and metal detectors for Android. Sensors and various elements smartphones allow you to create other tools - for example, a compass, a speedometer, a sound level meter. But due to the fact that such tools are rarely used in everyday life, they are not included in the review.
The selection of applications in each category was made according to their popularity in Play market. Testing was carried out on Smartphone Honor 5A.
The idea of this type of application is very simple, it does not require any special sensors at all. A ruler is displayed on the screen, which needs to be calibrated to real values, and it will be ready for use.
⇡ Ruler
The application was developed by Xalpha Lab and does not support Russian. But it has more than a million downloads in the Play Market, so the program can be considered one of the most popular lines for Android.
After launching the application, two rulers appear on the screen - on the left and on the top. With their help, you can determine the size of a small object that fits on the screen. The reference point is on the left upper corner screen and cannot be moved.
In order for the measurements to be correct, the ruler must be calibrated (for example, after launching the program, the screen length was determined to be nine centimeters, while it is actually more than eleven). For calibration, you can use a regular ruler or some object of known length. But if there was no such object or ruler at hand, then an ordinary credit card or coins, the sizes of which are known to the program. Unfortunately, the program does not know the sizes of Russian coins, and only US, EU, Canadian, Australian, British or Swedish coins are suitable for calibration.
Both the metric system of measurement and the imperial one, in inches, are available to the user. Supported night mode to save battery.
The program can remember the measurement by writing it to the history. This is convenient when you measure several items at once. But for some reason, when testing, the application did not save the history.
⇡ "Ruler: Smart Ruler"
The application was developed by Smart Tools, which has created a whole package of working tools for smartphones - a compass, a metal detector, a sound level meter, and so on. The program is completely Russified. AT free version the application will show ads to the user, and in the paid application, in addition to the on-screen ruler, there is a protractor, a set of templates for determining the thread pitch and profile (thread gauge), a level and other tools.
After launching the application, the ruler, as in the Ruler, must be calibrated. But this can only be done manually by measuring the length of the screen and entering the data in the calibration field.
Unlike Ruler, Ruler: Smart Ruler allows you to measure objects by placing them in the middle of the screen and specifying a start and end. However, you cannot simultaneously measure the length and width of an object in the free version of the application. It is impossible to save the measurement results here. But the application allows you to measure an object longer than the screen - for this, you can move the ruler to the left along with the object.
Units of measurement can be either inches or centimeters.
⇡ " Ruler»
The application was released by the Russian developer NixGame, which offers users other similar working tools. In the free version, you will have to put up with ads, and saving the measurement results will not be available.
For calibration, you need to attach a real ruler to the screen and move on-screen ruler so that the divisions match. To measure the length, you can use either side of the screen as a regular ruler, put an object on the screen and manually set the start and end points of the reference, as well as measure the length and width of a rectangular object at the same time.
As in other applications, you can measure objects in centimeters and inches. The application supports night mode and screen rotation.
Creating tools of this type usually requires the presence of Google's augmented reality library - ARCore. But there are applications that can determine the distance to an object using the laws of trigonometry, using data on the angle of the smartphone, which they receive from the gyroscope.
AR Ruler App
The AR Ruler application was developed by the Belarusian company Grymala. To measure the distances and sizes of objects, the program uses augmented reality (AR) technology.
The program can measure the linear dimensions of objects (in metric system or inches), the distance from the device camera to a point on the plane, angles on 3D planes, the area or perimeter of an object (both rectangular and polygonal and round), the volume of three-dimensional objects, the length of the path taken with a smartphone, the height of objects (for example, a doorway or furniture). There is also a simple on-screen ruler in the application.
AR Ruler requires the ARCore library from Google, which can be installed on smartphones with Android 7.0 and higher. To improve the accuracy of measurements, the developer advises taking three or more measurements and focusing on the average value.
⇡ Measure
Application developed by Google. Like the previous one, it allows you to measure the linear dimensions of objects, the distance from the camera to the object (like a tape measure), the height of objects, and so on.
You can take a snapshot of the measurement, as well as copy the results to the clipboard.
⇡ "Rangefinder: Smart Measure"
The program was developed by Smart Tools, as well as the already reviewed application "Ruler: Smart Ruler". "Range Finder: Smart Measure" can measure the distance to an object and its height. The principle of the program is based on trigonometry. The presence of the ARCore library is not required, so this "roulette" can be used on smartphones with Android 4.0 and higher.
To measure the distance to an object and its height, you must first aim the cross at the base of the object, press the button on the screen, and then do the same for the top point. Then the program will calculate the distance to the object and its height. For best measurement accuracy, the smartphone must be held at a height of 30 cm less than your height.
The program provides for manual calibration: the user is required to measure the actual distance to the object and its height and indicate by what percentage the values measured by the program differ from the actual ones. During testing, the program showed quite good results, differing from the real ones by no more than 5%. According to reviews in Google Play it can be judged that not in all cases the measurements are so accurate. Perhaps it depends on the smartphone model.
Applications of this type use the gyroscope and accelerometer of the device to determine the angle of deviation of any side of the smartphone or its back surface.
⇡ "Laser level - leveling tool"
The Laser Level - Leveling Tool application was created by EXA Tools, which has developed several other similar applications. The program includes three tools - a laser level, a bubble level and an inclinometer. The application is completely Russified.
For more accurate measurements, the app may need to be calibrated. To do this, you need to find a perfectly horizontal surface and calibrate the application data on it. However, it is not easy to understand how to do this - the program does not contain appropriate prompts, which users also complain about in the comments on the Play Market.
During testing, the application showed pretty good results. Of course, building a house using only this level is not worth it, but in some everyday matters, for example, when installing a cauldron on a makeshift hearth in the forest or washing machine in an apartment, a smartphone can help a lot. In addition, the capabilities of the application clearly depend on the operation of the smartphone's sensors - on the Play Market, reviews about the program are mostly diametrically opposed.
The paid version of the program differs only in the absence of advertising; you can switch to it from the free one directly in the application.
⇡ "Building level"
"Construction Level" is the development of the already mentioned NixGame. The application contains two tools - a level and a ruler. However, the ruler here is just additional functionality, the corresponding application of the same developer has about more possibilities. The program is fully Russified (and supports 14 more languages).
Just like in the previous application, the level can be calibrated by placing the smartphone on a perfectly horizontal surface. True, if the back cover is slightly convex, then accurate calibration may not work, since the device will not lie on the surface stably (this remark is also true for all other programs of this type).
The level can be used in two ways. The first involves aligning the object by placing the smartphone with the back cover on its surface. In this case, it is necessary to ensure that the bubble in the center of the screen exactly falls into the bounding circle. The second method involves alignment on one of the sides of the smartphone. In this case, you need to try so that the lines showing the angle of deviation from the calibrated horizontal coincide with it.
When the ideal horizontal is reached, the application can report this sound signal.
⇡ "Bubble level"
Simple application, no additional features. On the main screen, there are three bubble level icons that allow you to level the surface along the side of the smartphone, along the bottom or along the back surface (in several planes at once).
In addition to the level, the program has only one possibility - its calibration. Moreover, the developer claims that it will be needed only in cases where the smartphone manufacturer has not calibrated the device properly. This remark seems to be true for other applications, but for some reason the developers do not declare this. At least when testing all applications of this type without calibration, no difference in measurement accuracy was found. The paid version differs from the free version only in the absence of advertising.
⇡ "Level"
In terms of functionality, the “Level” application is similar to the “Bubble Level”, with the slight difference that it is automatically able to determine on which side of the smartphone the surface is being leveled (side, top, bottom or back cover) and show the corresponding level on the screen. The desired level view can be fixed so that the interface does not change when the smartphone moves.
The program is able to report the achievement of the horizontal with a sound signal. If necessary, the level can be calibrated.
The paid version differs from the free version by the absence of ads.
Even a simple smartphone can do a good job of replacing tools such as a ruler or level, showing fairly accurate measurement results. To fully use your smartphone as a tape measure, it is best to have a device with Android 7.0 and higher, but the accuracy will still not be up to a centimeter. As metal detectors, smartphones don't seem to be very good, but perhaps the reason is the weak magnetic sensor on the tested device.
- Description
- Help
Level bubble is an android application that will allow you to save money on a special device. Indeed, why waste them at all if you always have a phone at hand, and it has a gyroscope? Why pay twice? But even if you already have a ruler with a level, you should still install the level app, because due to the human factor, you can always lose it.
Before working in it, do not forget to check the phone's gyroscope, to do this, select the gyroscope setting function in the settings, and put it on a surface that is absolutely flat, in your opinion, or simply on a reference surface. Make no mistake, the Peisan Tower is a marvelous example of human error... Next, place either side of the phone as close to the subject as possible so you can measure the angle or slope of the subject. To measure the angle, first place the phone on a flat surface.
Among the features of the application:
- Independence in the calibration of any of the parties.
- Regardless of whether you need tangents, degrees or percentages, you can easily measure all this!
- A convenient sound effect in the "Level" application, which allows you to understand that the calibration was successful even without looking at the phone!
What repair can do without a level? What can we say about repair and construction ... Even when assembling furniture, installing double-glazed windows, or even such trifles as the need to hang a picture or a shelf, you need a level. Having thought of even the smallest alteration in the apartment, the question instantly arises of where to get it. useful device. Now you have the opportunity to have building level for android always with you! To do this, just install the appropriate application called "Level for Android" on your smartphone or tablet. Just imagine how much money you will save on buying this expensive tool! The program will allow you to use your smartphone or tablet and perfectly level any surface. For the maximum level of accuracy, it is recommended to pre-calibrate the accelerometer of your android relative to the surfaces that you will be equal to. To do this, put the phone on a flat surface and click the corresponding "Calibrate" inscription. Thus, as a result, you will best effect. Manual calibration once again confirms that the output is accurate and reliable data. The program has many different settings and visualizations. Depending on your preferences, you will choose the most suitable option. The Level for android works as follows: You just need to attach the device to the surface, the level of which you are interested in, and then watch the levels on the display. The application is distinguished by its incredible simplicity and ease of use.
It also won a large user audience due to its excellent accuracy. It does not require system resources to work, and the presence of the possibility of calibration indicates the maximum reliability of the data provided by the program. Completely free "Level for Android" does not require additional complex settings, programming skills, and the like. Even if your device has a bulging camera or other irregularities, you can easily calibrate the application depending on your android model. The program runs smoothly and quickly. The lens of the phone is fully used. Positioned along either side of the device. The mechanism of action of the application corresponds to the flat level. It should be noted a simple and understandable menu, which is easy to understand. Userfriendly interface will also appeal to everyone without exception due to its simplicity and uniqueness. All measurements are carried out accurately and thoroughly, you can be sure of the correctness of the data. So, install convenient and extremely useful application"Level for Android" on your phone and enjoy the fact that now you can always easily perform delicate housework that requires accuracy and vision of all irregularities. Many users have already expressed their positive feedback in favor of this program, and you will appreciate all its numerous advantages.
bubble level(water level) is a measuring instrument designed to indicate the horizon. With it, you can easily and simply evaluate the conformity of the surface to a horizontal or vertical plane, and the tool is also able to measure the degree of surface deviation.
The bubble level is simply indispensable for any builder, and is also useful in the household to determine the level of inclination and evenly set something on a vertical or horizontal surface. In order to measure the slope angle, it is enough to attach your smartphone to the object and thanks to the built-in orientation sensors on the screen, you will get the result whether the object is located on the surface evenly or not. The spirit level is a traditional modern level meter, this device is a slightly curved glass tube, inside of which a flask filled with liquid and an air bubble is sealed, and it is by the position of this air bubble that one can judge the angle of inclination. The app will try to mimic a real instrument and help you measure the angle of a surface relative to a vertical or horizontal plane.
This type of construction tool is used in construction as well as in photography. With proper and proper use of the device, you can evenly position pieces of furniture, for example: clearly hang a picture on the wall, or place a cornice above the window, measure the level of the billiard table.
Features of the Bubble Level App for Android:
- modern measuring level;
- quick and easy calibration;
- shows slope or angle;
- switching X and Y axes (for some devices);
- clear interface;
- horizontal or vertical slope measurement.
The program will turn your phone into a level with which you can check the level of inclination without resorting to additional tools.
Download Bubble Level free for android without registration and SMS at the link below.
| If you have an Android phone, pocket or tablet PC, then with the help of this “Level” program you can easily turn it into. Yes, it's true, specially designed software based on data from the video camera built into the phone and the G-sensor (level sensor), it analyzes and displays the actual position of the phone in space (deviation from a horizontal or vertical surface). And since the vast majority modern phones have a built-in G-sensor, then this level program for android devices can work on almost any phone or tablet PC (including communicators). |
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It's absolutely free program level for android phones is distributed on an “as-is” basis, i.e. as is - without any warranties or obligations. But it's one of the best apps of its kind for Android, installed and running on 95% of devices tested.
Just download this software, install it on your phone, launch the application and you have a full-fledged building level on Android OS in your hands. It doesn't matter what model your Pocket PC or phone is, as long as it has a camera and a position sensor (G-sensor). This will make it easy to calibrate your device and start working with this program. You will not need any additional manipulations or settings, and even more programming skills.
Do not forget - this software is distributed freely (freeware) therefore download the program “Level” for Android you can absolutely free on completely legal terms. The key point is that the application is free and quite functional, compared to its counterparts that are sold for money.
Free program "Level" for Android: |
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| Download the Bubble Level app for Android OS for free from Amazon.com – best programs for Android. | ||
The level program for android starts on phones very quickly and does not “slow down” compared to its counterparts, even among free offers. Fast and precise operation and instant response to changes in the position of the phone in space give accurate readings on the screen of your tablet or PDA.
Look at the screenshots of the program - in the settings you can set the units of measurement. Standard values in degrees (deviations from the horizontal), in percentages, rise in inches per foot of length, and others. Agree - this is convenient and practical when certain measurement tasks require their own values and you do not have to convert degrees to a slope percentage. In addition, working with the device's camera facilitates the positioning of the device and you immediately see on the screen the actual values of the measured lines, objects or surfaces. Measurements can be taken both relative to the end sides of the phone, and simply by putting it down bottom to the measured surface. Then the phone screen will act as a positioner, in the center of which you will need to place an imaginary air bubble. With the help of the “Level” program, your Android-based phone will turn into a completely.
How the level program for Android works:
Learning how to use this program is not difficult, even a child can start the program and calibrate the device once. Before you begin, place your phone on a known level, horizontal surface and calibrate the G-sensor. That's all - now the program on your Android phone is ready for measurements. Select the units you want to measure values in and start researching!
What repair can do without a level? What can we say about repair and construction ... Even when assembling furniture, installing double-glazed windows, or even such trifles as the need to hang a picture or a shelf, you need a level. Having thought of even the smallest alteration in the apartment, the question instantly arises of where to get this useful device. Now you have the opportunity to have building level for android always with you! To do this, just install the appropriate application called "Level for Android" on your smartphone or tablet. Just imagine how much money you will save on buying this expensive instrument! The program will allow you to use your smartphone or tablet and perfectly level any surface. For the maximum level of accuracy, it is recommended to pre-calibrate the accelerometer of your android relative to the surfaces that you will be equal to. To do this, put the phone on a flat surface and click the corresponding "Calibrate" inscription. Thus, as a result, the best effect awaits you. Manual calibration once again confirms that the output is accurate and reliable data. The program has many different settings and visualizations. Depending on your preferences, you will choose the most suitable option. The Level for android works as follows: You just need to attach the device to the surface, the level of which you are interested in, and then watch the levels on the display. The application is distinguished by its incredible simplicity and ease of use.
It also won a large user audience due to its excellent accuracy. It does not require system resources to work, and the presence of the possibility of calibration indicates the maximum reliability of the data provided by the program. Completely free "Level for Android" does not require additional complex settings, programming skills, and the like. Even if your device has a bulging camera or other irregularities, you can easily calibrate the application depending on your android model. The program runs smoothly and quickly. The lens of the phone is fully used. Positioned along either side of the device. The mechanism of action of the application corresponds to the flat level. It should be noted a simple and understandable menu, which is easy to understand. Userfriendly interface will also appeal to everyone without exception due to its simplicity and uniqueness. All measurements are carried out accurately and thoroughly, you can be sure of the correctness of the data. So, install the convenient and extremely useful application "Level for Android" on your phone and enjoy the fact that now you can always easily perform delicate housework that requires accuracy and vision of all irregularities. Many users have already expressed their positive feedback in favor of this program, and you will appreciate all its numerous advantages.
Level for android is one of the first applications that became available to everyone Google users Play Market regarding construction topics. Now there are many more. The overview presents the most popular applications, which are placed from the highest rating to the lowest.
In modern society, the person who has a smartphone in his use can do almost everything. Track your child's location, know the weather, find the right way, write music... Apps you need almost all branches of society are used - from children to the elderly, students to professionals. Various professional tools have also been developed for the Android OS. For example, builders can no longer take levels, rulers, and protractors with them. And just take a smartphone or tablet.
Building level (Download)
The most valuable tool among Android gadget users. The application has the functions of measuring angles, surface inclination, length measurement, plumb line. Very easy to use, good accuracy. Thanks to this, I received a lot positive feedback among application users. Graphics, though primitive, but there is nothing superfluous. Here, special frills are not required.
You can install the application absolutely free. At the same time, there is no paid version, ads rarely pop up at the top of the screen. If you turn off the connection to the Internet, then nothing will distract from the measurements. Rated by users at 4.7 stars out of a possible 5.
Photo: Building level for android
Bubble Level (Download)
Another application that can measure the level of the surface is the bubble level. If in the previous case the exact angle is measured, then it will be convenient to work here for those who are used to the classic level with bubbles and limiters. In addition to them, there are measurements of the degree of deviation from the X and Y axis. The graphics are realistic. Sometimes it seems as if in the hands of a real building level. Very easy to use.
The application is installed for free, there is no paid version, but there is a small amount of advertising. The rating is high - 4.7 out of 5 stars.
Photo: Bubble level
PROrab Free (Download)
A useful application for calculating the amount of materials needed for construction or renovation. Here you can calculate the area, the amount of materials for plaster, putty, you can also find out about the amount of bricks, wallpaper and other building materials. You can even choose the manufacturer of materials in it. As a result, you can calculate the amount needed to purchase all building materials using this application. Now it will not be difficult to draw up an estimate for the construction or repair. Even without the involvement of specialists.
A simple and intuitive interface without unnecessary graphic effects, a small amount of advertising and the absence of paid content will appeal to many professional builders and those who want to do their own repairs. The app is rated 4.6 out of 5 stars.
Photo: PROrab Free
Calculation of floor space (Download)
How to calculate building materials if you do not know the total area of \u200b\u200bthe room? It must be measured if it has the correct shape. And if not, then an application comes to the rescue that will calculate the area of various shapes. The basic forms of the premises are included in the templates. For an accurate measurement, you need to enter data and get a result. The application is able not only to measure the area, but also the volume of the room. A simple interface that will be understandable to absolutely everyone. No unnecessary graphic effects, classic design in white and black colors. It will help those who decide to repair their homes and do not resort to the help of specialists.
Photo: Calculation of the area of the room on android
Construction Calculator (Download)
Another tool that will help you calculate the amount of concrete for the foundation and even paint for the painted surface. When entering data, the final result and the approximate cost are obtained. Everything is clear in the application, there are no difficulties in the calculation. Ample opportunities allow professionals and amateurs to use the application. No-frills decor. It will also help to draw up an estimate for future construction or turnkey repairs. Very useful for double-checking a contractor.
Photo: Construction calculator for android
Laser Level (Download)
After starting the application, it is recommended to calibrate for more accurate calculations. You can capture an image and measure the azimuth. This level will help in measuring the terrain. For example, for a future construction or installation of a fence. Measurement accuracy without errors.
Photo: Laser level for android
Toolbox (Download)
This set includes a protractor, level and ruler. All measurements are accurate and the application is quite easy to use. Realistic graphics that convey the effect of using real tools. Suitable for users different levels professionalism. A very useful application that does not take up much memory on your device. The version is in English, but everything is clear and easy to use.
Although it is indicated that there is paid content, it is not clear what it consists of. The settings and menu do not offer anything to purchase. Advertising is present only when the application is launched, it does not bother you during operation. Rated 4.4 out of 5.
Photo: Toolbox for Android
Plumb (Download)
A useful tool for checking horizontal and vertical alignment. The device's camera is being used. It is possible to measure the angle and length of an object. In order to fully use the application, you must go through the stages of training (given at the beginning, at startup). There is a device calibration for correct operation.
Advertising is annoying all the time, appears even at the most inopportune moment. It's easier to turn off the Internet so that this does not happen. Rating - 4.1 out of 5 possible stars.
There are both positive and negative reviews.
Photo: Plumb for android
Smart Tools (Download)
good selection necessary tools. Here you can find a compass, and a magnifying glass, and a mirror, and a radar for measuring speed. And also a lot of necessary and not very tabs. There are many calibration issues for each device. A lot of information doesn't match. When checking the cardinal direction, it shows north incorrectly in 6 out of 10 cases. Only a unit converter, a protractor and a stopwatch are definitely useful.
Photo: Smart tools for Android
Distance meter (Download)
The application is designed to measure the distance from the device to the object of interest, as well as to measure the height of the object. When using the application, some inaccuracy in measurements was revealed, it cannot be trusted 100%. But for approximate calculations - a very good option. It is not difficult to use it, it is enough to know the basic English words, since the application is in English.
Photo: Distance meter for android
All of the above applications are able to work without an Internet connection. To install them, it is enough to have Android OS versions from 4.0 and higher.
Dear readers! If you have any questions or comments on the topic of the article, please leave them below.
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