Encrypt important text that can only be read by the people who has the decryptor key you share with or can be decrypted just by yourself. Arrowat Encryptor provides the way to save the encrypted content to file with a separated encrypted key that is used to decrypt the content, you can share the encrypted file and provide the secret key to allow others to read it, most important is keep content secret from others, use it for secure your letters, numbers and any text you want to keep secret.
Learn how to use the app at https://arrowat.net/arrowatencryptor/docs/encrypt-and-decrypt-text