Apps like Cryptex

Here are some great alternatives to Cryptex by SK Android Apps :
Messages Lite - Text Messages
Messages Lite - Text Messages
★4.3
Secret Message: Encrypt Text
Secret Message: Encrypt Text
★3.8
SafeSwiss® Private Messenger
SafeSwiss® Private Messenger
★3.8
Letstalk IM
Letstalk IM
★3.8
Oversec
Oversec
★4.2
Hidden Message : Text to Emoji
Hidden Message : Text to Emoji
★4.6
BrightChat - Secure Messaging
BrightChat - Secure Messaging
★4.4
Secure messenger SafeUM
Secure messenger SafeUM
★3.5
Messages: Private messaging
Messages: Private messaging
★4.5
Confide - secure messenger
Confide - secure messenger
★4.4
Messages Improved
Messages Improved
★3.7
SimpleX Chat
SimpleX Chat
★4.3
ASCII message encrypter
ASCII message encrypter
★4.4
Garble
Garble
★4.0
Secret Emoji: Emoji encryption
Secret Emoji: Emoji encryption
★4.5
Messages : SMS Messenger App
Messages : SMS Messenger App
★4.3