Hello, Some DrGeo users reported me lag and freeze with devices like Galaxy Note 10.1, Google Nexus 7 and 10. If you have one of these devices, I will be please if some of you could test it and report to me. For test install either from: - Google Play https://play.google.com/store/apps/details?id=eu.drgeo.android - INRIA Gforge https://gforge.inria.fr/frs/download.php/31967/DrGeo-release.apk Thanks Hilaire -- Dr. Geo - http://www.drgeo.eu