1- Mores Code:
You can write text and convert to Mores code and also the other way around.
2- Substitution Encryption:
Encrypts the text with the Cipher key (Must be shared with your friend) and produce Encrypted text. you can sent it or store it in a note.
To decrypt a text you enter the text and the Cipher key that is used to encrypt it.
3- Hash Algorithms:
Select an algorithm from MD5, SHA-1, SHA-2-256, SHA2-512, SHA3-256, SHA3-512 to produce the hash value.
4- Generate Number:
Generate a number randomly using the device it self (pseudo random) between 1 and 100 you can change it to as big as the device can handle.