Send secret messages to friends using a variety of popular ciphers and codes from history. Explore different encryption methods and start sending encrypted messages today!





198+ iOS apps & games curated and reviewed
The best cipher sender apps on iPhone average 4.1★ across 198+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.





Send secret messages to friends using a variety of popular ciphers and codes from history. Explore different encryption methods and start sending encrypted messages today!










Cryptogram Words Master is a fun and challenging logic word puzzle game where players decipher encrypted quotes. Exercise your brain with this app and test your decoding skills!


Cryptogram: Number is a challenging puzzle app that tests your logic and problem-solving skills. Decode encrypted numbers to unveil hidden messages. Ready to crack the code?


This application allows users to encrypt and decrypt messages using various famous ciphers, and also provides tools for crypto-analysis and other helpful utilities. Try encrypting and decrypting messages with different ciphers, and analyze your ciphertexts with the built-in crypto-analysis tools.


A secure email platform that prioritizes user privacy and data protection through encryption features. Send and receive private emails with confidence.


This application allows users to encrypt and decrypt secret messages using various ciphers, including the Caesar Cipher and Enigma Machine, and share them with friends. With a wide range of encryption methods available, users can easily add and utilize different ciphers to protect their messages.


This application allows users to encrypt and decrypt messages using Caesar and Vigenère ciphers, a fun and interactive way to explore cryptography. Try encrypting a message with a secret key or keyword and send it to friends, or decrypt an encrypted message to uncover its hidden meaning.




Decode classic ciphers, solve word puzzles, and break codes in a puzzle game that challenges your mind. Play for free, with no ads, and test your brain with brain-teasing fun and riddles.


This secure text encryption and decryption app uses high-strength AES encryption to protect messages, ensuring they remain unreadable and secure. It offers various cipher options for different scenarios, real-time encryption, and secure sharing features, with the option to upgrade to a premium subscription for additional features.


Decode encrypted messages using various ciphers, track your progress, and compete with friends in a challenging puzzle-solving experience. Try it now and unlock quotes and sync your scores across devices.


A convenient password manager with a built-in password generator for strong, unique passwords. Simplify your online security with this easy-to-use app!


This app provides strong authentication through OTP credentials, cloud-based MFA, push notifications, and biometrics for enhanced security. It is suitable for iOS and macOS users looking for a secure and convenient authentication solution. Check the App Store for more information.






This easy-to-use app encodes and decodes simple substitution ciphers, such as Caesar and Atbash style ciphers, allowing users to convert text up to 2,000 characters at a time. With its user-friendly interface, users can easily type or copy-paste text, adjust settings, and save or transfer converted text for various purposes.


A secure collaboration platform that enhances team productivity through private messaging, file sharing, conference calls, and more. Boost privacy with features like ephemeral messages and device fingerprinting. Available on all devices, with options for crisis collaboration and a free version for external partners and personal use.




Uncover the hidden message behind a set of numbers and decipher the code to reveal insightful quotes and proverbs in a unique and challenging logic game. Download and start solving to sharpen your mind and discover new words, available for offline play with an ad-free option.