PGPro

PGPro can encrypt and decrypt messages as well as manage your OpenPGP keys. It is free, simple and lightweight. Everything stays on your device.
PGPro is open-source and made in Switzerland.

With PGPro, you can
- Encrypt and Decrypt your Messages
- Import Keys from File, Clipboard and Web (Web Key Directory and OpenPGP Keyserver)
- Export all Keys to GPG Keyring file
- Share single Keys via Share Sheet
- Generate new 3072-bit RSA Keys

Limitations
- PGPro does not support sign-only/subkey-only keys
- PGPro does not support symmetric encryption