Encrypt your secrets.
** This app doesnt use internet connection **
Encryption:
Type a text you wish to encrypt, select or create a key, and voilà! you have the encrypted string that you can share however you want
Decryption:
Paste the received text in the app, use the relevant key (if you dont have the key, ask the sender go give you his key QRCode), and voilà, you have the original text