Bubble Level

Antoine Vianey

In-app purchases

About this app

Transform your Android device into the ultimate precision tool with Bubble Level - the go-to app for carpenters, stonemasons, and bricklayers alike. With its handy, accurate, and incredibly useful design, this app makes it easy to check if any surface is horizontal or vertical.

With three indicators, you can use any side of your phone to check surface level or plumb. Plus, the app doubles as a clinometer, giving you the inclination of any surface in degrees, percent, or inches per foot. And with sound effects that let you measure without looking at your phone, you can stay focused on the task at hand.

One of the standout features of Bubble Level is its calibration options. With relative and absolute calibration, as well as cumulative calibration, you can fine-tune your measurements for even greater accuracy. And with the ability to calibrate any side of your device independently, you'll always get the most precise readings possible.

Whether you're aligning pictures, boards, or wall mounts, calculating the inclination of pipes, or even parking your camper van, Bubble Level has got you covered. So why wait? Download the app today and start enjoying a new level of precision in all your projects!

Ratings and reviews

The app should be calibrated, if you have a way to do it. It may sort of defeat the purpose if you have another level available, but once I calibrated it with another level it's been accurate. Since then, I've been able to use my phone many times that I didn't have a level available or that this big one wouldn't fit. People should consider that not all phones or cases are perfectly flat. It'll definitely throw your measurements off.

Good level except in landscape mode. Then it's consistently 8 degrees off. Calibration doesn't seem to fix it unless I hold the phone up at an 8 degree angle when I calibrate it. Even then, the numbers are wrong though the bubble is correct. I thought it might be to compensate for my phone's volume buttons that stick out a little, but they don't stuck out enough for 8 degrees. Also, I've been measuring with the flat side of my phone. It's a little frustrating.

Excellent when you get the calibration... Calibration is sort of explained in the full app description, but it's still a bit unclear. Basically put it on a surface, tap the target icon, spin it 180⁰ and tap it again. Done. You can confirm it by checking you get the same angle whichever way around the phone is. The display is great for accurate leveling. Better than a pretend bubble.