Bubble Level - Level Tool

Contains adsIn-app purchases
4.8
30.6K reviews
1M+
Downloads
Content rating
USK: All ages
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About this app

A bubble level, a spirit level, or a plumb bob is a tool used to check whether a surface is horizontal (level) or vertical (plumb). The Bubble Level Tool, Leveler app, also serves as a goniometer or a carpenter’s level, can be applied in construction, carpentry, photography as well as daily life. It mimics and works like a real level meter. It is very handy and useful to provide you with accurate results.

Where you need Bubble Level:
šŸ–¼ At home: Use the Bubble Level to perfectly calibrate and position the object if you need to hang a picture or a photo frame onto the wall, or assemble a shelf, a refrigerator or a washing machine.
šŸ—ļø At work: This level tool is a must have app for horizontal and vertical calibration in fields such as construction and carpentry.
šŸ“ø In photography: It is a good helper if you want to set up a tripod.
šŸ•ļø Outdoors: Don’t you think a tilted camping car or picnic table is annoying? The Bubble Level can help you place it horizontally.
šŸ“ Other situations: When you are leveling a billiard table or a table tennis table, or inserting a shelf, just grab your phone and use the app!

Features
- A horizontal & vertical level tool
- A clinometer
- A screen lock to avoid changing directions
- Sound reminder
- Calibration & reset functions
- Relative calibration & absolute calibration
- Dark mode & light mode
- A bubble level & a bull’s eye level

How to use the Bubble Level:
The Bubble Level also simulates a bull’s eye level, which levels across a plane. To determine whether a surface is horizontal or vertical, or to measure its inclination angle, you can simply lay your phone flat on the surface, or lean the phone against it.

This leveler app indicates horizontal when the bubble is in the middle. It will show the actual angle in the meantime. Thanks to its sound effects, you can hear the result without looking at the screen.
Updated on
May 7, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.8
30.2K reviews
Andrei Kalantarian
September 10, 2025
Shows the ad full screen without the options to hide/remove it. No idea how to continue. "Back" button didn't work, re-launch works sometimes. Will uninstall as soon as I can. I discovered the button to remove the ad: it is at the top-right and not displayed all the time. I would prefer something user-friendly, like, a shutter to slide vertically.
1 person found this review helpful
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Simple Design Ltd.
September 12, 2025
Hello! Sorry for the inconvenience. We depend on ad revenue to help maintain and improve the app. However, we also prioritize user experience. Your feedback is invaluable, and we will take it into consideration as we strive to find a balance between ad frequency and app usability. Other problems, please let us know via "Settings -> Feedback".
Paragot
December 1, 2024
I have a bookshelf I built to calibrate levels on, and this one is perfect on my phone. There are ads, but only a little irritating (I was going to say not irritating, but then I saw a full screen one pop up). You can click the button top right to go to the app, or just pay the $3 for the app, which is cheaper than the level I keep forgetting to get out of my toolbox. Developers deserve to get paid.
54 people found this review helpful
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Rob Weiss
November 5, 2024
The free version is virtually unusable more than once due to ads that cover the entire screen. I couldn't find a way of getting out of this without purchasing the paid version. Also, when I used it (once} outdoors the bubbles are very hard to see when sunny, even in shade. However, the paid version would be ok indoors, I think.
5 people found this review helpful
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Simple Design Ltd.
November 6, 2024
Hi Rob Weiss, sorry for the bad experience. As our app is free to use, its running cost needs to be offset by ads. Thanks for your understanding. But the ads won't affect your use. If possible, please email us screenshots or video recordings of the issue via "Settings -> Remove ads". We will continue to optimize the app. Best wishesā¤ļø