I'll be using PocketLab with Android tablets in a workshop with 8-12 students. I'm trying to find compatible Android tablets. I have a Samsung Galaxy Tab 3 and a Galaxy Tab E, both purchased this year, both running Android 4.4.4 and with Bluetooth support, but when I try to download the PocketLab app from Google Play the download is disallowed because the platform is identified as incompatible with the current version of PocketLab. Although the list of supported Android tablets does not include these two explicitly, it does say "4.3 and newer..." so it seems these should qualify. I cannot find Nexus tablets nor Samsung Galaxy Tab 4 tablets at any stores in my metro area. Suggestions?