Works on Android 6 tablet but scanning fails to pair on Galaxy S7 running Android 7 ( and yes, Location is enabled for the app). It appears to observe a device is there when I press the pairing button on the sensor but it just sits there with a blank box.
Works well its nice to just look at your phone to see your levels. Battery life is better for the device than I expected. It will show low battery in cold weather.
Unreliable, usually reads 100%
Easy to use for the trailer.
I use it on 30 # RV tanks. My Android phone allows selection of 30 # so levels are appropriate. The magnet on the transmitter is strong, but would probably not survive Mass. bridges so I installed a bottom under the tank. Also you have to be careful putting the tank in the RV or the transmitter will slide away from the middle of the tank and give false readings.
A few small fixes. Added more tank sizes for XL sensor