It proves whether you have a functioning magnetic sensor or not in your phone, but I'm skeptical about the readings. It's fun to use, but the specifics are sorta variate.
Used it to find studs. Worked great because you can see the actual tesla value instead of dots.
Free party favor, would not recommend it to locate anything important .
Works well for costing nothing
This app does exactly what it says it does, its great!
Finding for your list things
- v1.4.6 : Share menu
- v1.4.5 : More models are calibrated
- v1.4.3 : Sound on/off icon