Bug fixes and other improvements We've created an updated version of Beeper Mini that fixes an issue that caused messages not to be sent or received. You can get the update directly from beeper.com/update on your phone. We are still doing some final testing before submitting the update to the Google Play Store for distribution to all users. If you encounter any issues, you may need to uninstall and reinstall the app.
Is that true? I thought the specs were publicly available
AFAIK only the “new” formats are (for the basic apps, the ones ending on x). Apple’s office suite is much older than those.