Indeed, I disclose here that I am the developer. It's not better or worse, it's different. You can see a list of features in the link, that should be better than me writing them here (main security pluses are: doesn't read from phone book, email can be masked, sent messages can be deleted even after having been read, and there is a self-destruct mechanism)

E2EE is implemented with RSA+AES. iOS uses keychain and CommonCrypto. Android uses a modified BouncyCastles. I'll probably open source the code once I've figured out the licensing details