Bubble Level For Wear OS (Android Wear) by Wearable Software is a free spirit level or bubble level app that can be used on your smartwatch. It is specially designed for Android Wear watches and is a great helper for those on the go. The app can be activated by saying "OK Google...Start bubble level" and then holding any of the watch's four sides against an object to test it for level or plumb, or laying it down on a flat surface for a 360° level.

One of the key features of Bubble Level For Wear OS is its calibration for less precise devices. The app is ad-free and can be downloaded for free. Please note that your mobile device must be compatible with Android Wear and you need to pair your phone with your wearable device with the help of the Android Wear app. To open the app, go to "Start..." and open the "Bubble Level" app or say "Start bubble level".

Overall, Bubble Level For Wear OS (Android Wear) is a simple and easy-to-use app that is perfect for those who need a spirit level on the go. If you have any suggestions for improvement or any issues with the app, the developer invites you to let them know.