Convenient compact scales on android. You can determine the weight of any object to 500 grams (depending on the screen). There is a small error - about + -20 grams. The more rounded and smooth shape of the object, the more accurate the scale will show the weight. That would not damage the screen, very hard on him a piece of cardboard or plastic card - it will also increase the accuracy of the scales.
play.google.com/store/apps/details?id=serg.tano_apps.weigher_scales
video-rewiew:
- YouTube
Hi , Done rated and reviewed 5 stars , inder YoussefElbarkaoui ,
please , do the same to my game :
https://play.google.com/store/apps/details?id=com.lifestyle.thundersky
update app: fixed bugs
Downloaded and rated!! 
private message sent with link of my app.
Now waiting for your vote!!
Update. Fix bug + review exchange
I’ve rated also 5 Stars and g+ it as Lukas.
Please do the same to my App Alcometer: https://play.google.com/store/apps/details?id=com.androidupgrader.alkometerlivelite
Thanks!
Done also.