MsgSecret vs RSA Lab

Turn everyday text into coded messages for puzzles, playful exchanges, and learning about classic ciphers. Choose a method, set a key when needed, and encrypt or decrypt on your device. MsgSecret includes classic ciphers, word transformations, and text encodings such as Base64. These methods do not provide secure encryption and must not be used to protect passwords, personal records, financial information, or other sensitive data. Base64 is encoding, not secrecy. Get started with a fixed interactive sample that shows a message being encoded and decoded back to its original text without spending credits. Use separate encrypt and decrypt input fields to work without overwriting what you entered. Method notes explain how each transform works and its limitations. Share the coded result through the iOS share sheet, or copy and paste it into your messaging app. Optionally share decoding instructions too. Recipients select the same method and paste only the coded message into MsgSecret. When a method needs a key, share it separately; keys are not automatically included in shared messages. Free access includes 3 successful encrypt or decrypt operations each day. This allowance resets at midnight UTC and does not accumulate. After using your daily allowance, each successful operation uses 1 saved credit. A completed optional rewarded ad adds 5 credits. A one-time in-app purchase provides unlimited transformations without rewarded ads. Previously purchased unlimited access can be restored. Features Classic ciphers, word puzzles, and text encodings in one place Fixed interactive sample with an encrypt-and-decrypt round trip Separate encrypt and decrypt input fields Native sharing, optional recipient instructions, and clipboard tools Method explanations with clear security limitations Exact key adjustment and accessible controls 3 free successful transformations per day Optional rewarded ads for 5 saved credits One-time unlimited access and Restore Purchases Designed for iPhone and iPad with a focused dark interface

You can use RSA Lab to generate RSA keys, decrypt encrypted messages and encrypt messages.  You can also store and name your RSA private and public keys in RSA Lab. All data in RSA Lab is synchronized on the iCloud.