This application does not let you export your secret key in a standardized way to import it on other devices, e. g. a desktop PC running Linux. Therefore I can't recommend using it for creating new keys, since it creates a vendor lock-in to this application and the Android OS.
If your looking for an easy app to encrypt and decrypt this is perfect. but as far as exporting private keys/public keys there is no way lol but you can still import your old key from ur pc and use it only as an encriptor/decryptor which is good ...
Fantastic App! Worked with my YubiKey NEO and K9 Mail on Nexus 5x with no issues. Nice UI considering how horrible most PGP Apps are. Very happy!
Very little of it works. Move to Yubikey, crash. Add subkey, crash. Can't turn off internet synchronization. The only thing it can do without force closing is generate master keys, but they're stuck there forever. It feels like it's close to working sometimes, but for now the wait for functional pgp on Android continues. That this is the current reference quality pgp app on Android is super disheartening.
Cannot for the life of me figure out how to get a copy of my public key. Extremely frustrating unless I'm missing something...
Finally, good pgp key management with an accessible API for other apps. Combined with K9, this is really great. I can finally, seamlessly, encrypt and decrypt emails across from both my laptop and smartphone.
* New key status displays detailed information why a key is considered insecure or defective