Write a secret message, give it a password and more and share it within a link.
Secret Muffin is an app to send and receive encrypted messages.
When you write a message it will be sent encrypted inside a link (shared through Whatsapp for example, or using any other medium).
When someone clicks on that link, they will be redirected to this app to receive the message.
Optionally you can add a password to could receive the message.
Also you can add a time capsule (a future date in which the message can be read and / or another future date in which the message expires and can no longer be read).