Top 9 best Android apps for ruler and measurement – 2021


In addition to serving as a digital ruler, your smartphone can also help you measure various other things. Smartphones are very powerful tools, especially when you combine them with good apps. In this article, we’re taking a look at some of the best ruler and measuring apps for Android. Note that we have included 9 apps in the list below and that these apps are not in any particular order.

These are just our personal decisions, there are of course many more ruler and measuring apps in the Play Store. That being said, there is some information below. Not only have we added descriptions for each app listed, we’ve also added some screenshots / promotional videos and various other information about each and every one of those apps.

Top 9 best Android apps for ruler and measurement in 2021

Below is a quick rundown of the top 9 best Android apps for ruler and measurement for 2021, including all download and in-app purchase costs.

Download costs In-app costs (per item)
Ruler from Xalpha Lab ✕ ✕
Nikola Kosev’s ruler app ✕ $ 0.99 to $ 5.99
AR ruler app from Grymala ✕ $ 0.99 to $ 89.99
ARPlan 3D ✕ $ 9.99- $ 89.99
Smart tools 2 $ 3.50 ✕
Laser level from EXA Tools ✕ $ 0.99
Angle tool ✕ ✕
Inclinometer ✕ ✕

Top 9 best Android apps for ruler and measurement 2021 downloads

Below is a little more information about each app, a suggestion for the type of user the app is best for, and a direct link for easy download.

All download links lead to the entry in the Google Play Store of the app. Users are always advised to download apps from Google Play or an authorized app store.

Best ruler android app for most users

Ruler from Xalpha Lab App raster image

Ruler from Xalpha Lab

If you are looking for a simple digital ruler for your phone this is the way to go. Xalpha Lab’s Ruler has been around for a while and the app is pretty straightforward. To make things even better, it’s free to use and has no ads or in-app purchases. In other words, the app is completely free. Before using this app, you need to calibrate it very quickly. You can use your credit card or other similar card to do this. You can even use a coin or a real ruler.

With this app you can choose units for your measurements that suit you. You can choose between fractional inches, decimal inches, centimeters, and millimeters. The app also has a night mode that is designed to improve battery life on AMOLED displays. It will match your eyes even at night.

Download the ruler from Xalpha Lab

Best designed android ruler app

Nikola Kosev’s ruler app

  • Price: Free download
  • In-app purchases: yes
  • Android version: Varies depending on the device

If you’re looking for an alternative to the first app we mentioned because you don’t like the design, this is a good way to go. Nikola Kosev’s ruler app may look more engaging to some of you. You can choose between inches and centimeters, depending on where you live. The app works well on both smartphones and tablets as it was designed for both small and large displays.

The app includes a measurement history and allows you to copy the measured length to your phone’s clipboard so that you can paste it elsewhere. The app contains a multi-touch caliper tool functionality. If you find the app inaccurate at first, you can easily calibrate it, preferably with a real ruler. The instructions are included with the app in case you need them.

Download the Nikola Kosev ruler app. down

Best AR ruler Android app

AR ruler app from Grymala

  • Price: Free download
  • In-app purchases: yes
  • Android version: 8.0+

We have seen some successful augmented reality (AR) apps out on the market. Well, AR can be used for various other things. Measuring objects is one way to use it. The AR Ruler app has a self-explanatory name. This app uses your camera to help you measure various objects. It will basically help you measure real objects with your smartphone, and that sounds good, doesn’t it?

You need to be a certain distance away for this app to do a good job, and at a certain angle. Best of all, this app can actually map objects in 3D. All you have to do is follow the directions for the best results. And yes, it also includes your regular digital ruler in case you need to measure a smaller object quickly and not in 3D. Another thing to note is that the app needs an ARCore library (provided by Google) to work.

Download the Grymala AR ruler app. down

Best AR ruler Android app for measuring rooms

ARPlan 3D

  • Price: Free download
  • In-app purchases: yes
  • Android version: 8.0+

The ARPlan 3D app is from the same developer as the previous AR app we talked about. The main aim of this app is to help you measure rooms in your home. With this app you can place a virtual tape measure on real surfaces. This means that rooms can be measured much faster, according to the developer. It can measure the room in general, but also windows and doors.

Note that furniture is in the way, but of course they can’t really see through. So this is best to use when there is no furniture in the room, before buying furniture or the like. The app can also create a side view and 3D floor plan for you. You can also share the floor plans you have created with others directly from the app.

Download ARPlan 3D

Best Android app with various measurement tools

Smart tools 2

  • Price: Free download
  • In-app purchases: No.
  • Android version: 6.0+

Smart Tools 2 is the only app on the list that isn’t free to start with. Most of the other apps come with in-app purchases and ads, but you don’t have to buy them before you can use them. That’s not the case with this app, but it’s well worth the money. Smart Tools 2 is an app that combines various useful tools in one place. One of those tools is a ruler, but there are several other tools here, some of which will help with measuring.

There are 6 tool kits included. Here you will find the following tools: ruler, protractor, spirit level, thread, compass, metal detector, GPS, sound meter, vibrometer, lux meter, flashlight, magnifying glass and mirror. The app also helps you measure distance, height, width and area. But that’s not all, the developer has also added a unit converter tool and currency converter.

Download Smart Tools 2

Best laser level Android app

Laser level from EXA Tools

  • Price: Free download
  • In-app purchases: yes
  • Android version: 4.1+

Laser Level is another really useful app for measuring. It includes a laser pointer, a normal 3-mode spirit level / spirit level (Libella), and an inclinometer (inclinometer) for measuring vertical angles and determining the exact horizontal plane. Indeed, if these tools meet your needs, this app will work very well. The laser pointer is particularly useful and not every app of this type has it.

The laser pointer tool uses your phone’s sensors (gyroscope and accelerometer), camera, and AR to determine the vertical and horizontal planes around you. This is how you can measure your closet, bed, door height, etc. You may need to do some calibrations before using the app, but it’s very easy. The app is free to use but includes ads and in-app purchases.

Download laser level from EXA Tools

Best Android app for surveying your home

HOVER app raster image


  • Price: Free download
  • In-app purchases: No.
  • Android version: 8.0+

HOVER is another interesting app for measuring, although this one is a bit different from the others. This app aims to measure the exterior of your home so you know what you are dealing with. Needless to say, surveying your home the old fashioned way would take some time. This app can help you with that as it will take around 8 photos to get the job done depending on the size of your house.

It can measure your entire home, claims the company. It can also render your house in 3D if you need to. Note that you need a clear view of your home, even if it goes without saying. People are complaining in the comments as they cannot get the measurements because there is a tree in the way and so on. Well, if you’ve got a tree in the way preventing you from getting far enough to get these measurements and a clear view of the house (from all sides) then this app might not be for you. However, you can download it and have a try.

Download HOVER

Best angle measurement Android app

Angle tool

  • Price: Free download
  • In-app purchases: No.
  • Android version: 4.4+

The Angle Tool app is kind of self-explanatory. This is a really simple application that does one thing (well, two, technical) and does it really well. It can measure the angle between two planes with use, although you can also use it as a triangle ruler. The video above shows you how it works in real life, it’s really simple. If you need to quickly measure an angle of your wall or something similar, this is no problem for you. All you have to do is launch the app and basically lean it against the wall.

This application does not have a fancy user interface or anything like that and is also not required here. However, it’s completely free to use and doesn’t contain any ads. It also doesn’t involve in-app purchases, which is always a good thing. So you have full access to the app and no disruptions.

Download angle tool

Best inclinometer android app


  • Price: Free download
  • In-app purchases: No.
  • Android version: 4.4+

Clinometer, for those who don’t know, is an instrument that measures vertical inclinations. This app basically creates this tool from your smartphone and allows you to customize it up to 3 decimal places. A compass with light and magnetic field calculation functions is included as well as various systems of units. You can also use your camera to measure with a laser level or protractor.

This app saves a history of your measurements so you can always go back and check again. You can also easily export your measurements as an .xls file if you want. This is a really compelling app, and it has a high rating on the Play Store for good reason. If you need an inclinometer give this one a try, chances are you’ll enjoy it.

Download inclinometer


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