1. I have not had the chance to determine how accurate it is, but when I have used it, I didn't have any trouble with my projects.Not that accurate, placed on a level table and it gave different readings.Have used this app on different phones for 7 years always worked great.It's not working, it's stuck at one place when you move your phonePerfect smooth and easy to use.
2. One user replied "NEVER check a level against another level." How then would one go about calibrating the app without relying upon what another level determines to be true level (duh)? Common sense 101.Very simple app.
3. Only drawback is you need to calibrate it with another level, not s big dael.I've used this a few times in real-world work.
4. No default (factory reset) to true zero.
5. Best everI'm an Artist so I use it a lot! Great tool to hv!No fuss app.
6. Does what I need it to.
7. It works well, and I like that it's always in my pocket.