Download the app as a file from this site and install it in a minute. It is the same app as for iPhone: workout log, 138 animations, programs, trainer mode. Works offline.
Samsung: «Unknown app blocked» is Auto Blocker. Settings → Security and privacy → Auto Blocker → off, then install again. You can turn it back on afterwards (turn it off for a minute again to update).
If GymGantel was installed from Google Play before, the phone asks «Update via browser?» and then says «App not installed». First save your records (in the app: Settings → backup to account or file), uninstall the old app and install this one. Sign in or restore from the file to get your records back.
For now we publish the Android app ourselves, as a file on this site. It is signed with our key - updates install only over the same signature, so the app cannot be swapped.
When a new version comes out, the app tells you and opens this page. Download the file and install it over the old one - your records and settings stay.
PRO is paid through Paddle, our reseller. Checkout opens in your browser; after paying, go back to the app and PRO turns on by itself. The purchase is tied to your account and works on all your devices.
Write to [email protected] - we answer ourselves.