welias, please, send me a private message including as much as information as you can about your tablet: android version, brand, screen size... I can create a filter in Google Play to prevent the installation on some devices, but I never used this filter... on purpose.
Edit: ups. It seems there are about 400 devices "not allowed" to have this application. I don't know why, I guess these devices are declaring their capabilities wrongly.
At the time being and if you don't care to use a development version, try to install manually this file:
https://dl.dropboxusercontent.com/u/131 ... earMap.apk(you'll have to "allow installation from external sources" in your tablet settings)