WhatsCrypt is a free Android app developed by Vishal Snedan Robertson that allows you to send highly secure text messages, encrypted emails, and confidential messages on any messaging platform. This app is based on RSAA, a newly developed 1024-bit Symmetric Key Encryption Algorithm, which is computationally impossible to brute force or break. WhatsCrypt also offers a floating widget to encrypt and decrypt messages without switching between apps.

Using WhatsCrypt is simple. First, choose a key (password) and keep it to yourself. Then, type your message and encrypt it using WhatsCrypt before sending it via WhatsApp, Hike, Gmail, or any other messaging app. The recipient can then use the same key to decrypt the message via WhatsCrypt.

This app is perfect for those who need added secrecy for their messages, whether it's to send encrypted emails or to say something to only certain members of a chat group without anyone else reading your message. WhatsCrypt does not store any of your passwords (keys), so you can keep your key a secret and use different keys for different people. The app also offers a tutorial to help you get started.