# Covert Mail: Morse & Ciphers — Learn Morse code and ciphers > Learn and practice Morse code and historical ciphers with interactive lessons and decoding tools. (iPhone/iPad app by Illumination Development, L.L.C..) - Source: https://appshunter.io/ios/app/covert-mail-morse-and-ciphers/id347689000 (this page in markdown: same URL + `.md`) - Developer: [Illumination Development, L.L.C.](https://appshunter.io/developer/347689003) - Category: Education, Entertainment - Price: Free - Rating: 3.70/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 33 MB - Languages: American English, German (Germany) - Released: 2010-01-04 - Data updated: 2026-10-19 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/covert-mail-morse-and-ciphers/id347689000/reviews.md ## What is Covert Mail? Learn Morse code the way radio operators do, crack the ciphers people really used, then send a coded message of your own. Covert Mail is a field desk of secret codes. Each code is a dossier: read its history, practice it a few characters at a time, then decode a real message to file it in your archive. MORSE CODE, BY EAR • The Koch method: every character at full speed from the first lesson, two at a time, so you hear each one as a single sound instead of counting dots • Farnsworth spacing: characters at your chosen speed with extra room between them while you learn • Tones made on your phone at any speed and pitch, with an on-screen signal lamp and optional vibration • Decode SOS and Samuel Morse's first message, "What hath God wrought" SEND IT ON A BRASS KEY Hold the on-screen key to send. Keying missions teach every letter from A to Z, and the results show your marks against the ideal timing, so you can see where your rhythm drifted. The last one has you key the Titanic's call: "Come at once. We have struck a berg." FIFTEEN DOSSIERS Morse code, the NATO phonetic alphabet, the Caesar shift, Atbash, tap code, pigpen, Braille, the Polybius square, flag semaphore, a keyword cipher, Vigenère, the rail fence, ROT13, a substitution cipher and a book cipher. Each comes with its history: Caesar's shift of three, the tap code American prisoners used through the walls of Hỏa Lò, Polybius signaling with torches, Louis Braille's six dots. Your handler, Harriet Vale, leaves a note as you open each dossier. Every dossier you clear turns up one word of a letter the desk's founder cut into fifteen pieces. PRACTICE THAT KNOWS WHAT YOU MISS Practice batches are planned around the characters you get wrong, and a miss comes back a few clues later until it sticks. A new intercept arrives every day, the same for everyone, and an optional daily reminder tells you when it is in. THE CIPHER DESK A Morse code translator and cipher decoder in one. Encode or decode anything in fifteen codes, including a random substitution alphabet and a book cipher with any book you choose. Play Morse aloud, flash it on your phone's torch, or key it in yourself. Then send a coded message to a friend through any messaging app, with or without the key. Friends without the app can open it in their browser. No account. Your progress stays on your phone. Classical codes only: these are for learning and fun, not for protecting real secrets. Covert Mail first came to the App Store in 2009. This is the rebuilt version. ## Key features - Learn Morse code via Koch and Farnsworth methods - Practice sending messages with an on-screen brass key - Decode real messages with 15 historical ciphers - Explore the history of each cipher - Personalized practice based on missed characters - Daily new intercepts for practice - Encode/decode messages for sharing ## Is Covert Mail safe? Not enough ratings yet to assess Covert Mail. ## Is Covert Mail legit? Covert Mail: Morse & Ciphers appears to be a legitimate app. The AppsHunter Legitimacy Score for Covert Mail is 90 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/covert-mail-morse-and-ciphers/id347689000/reviews.md ### 5/5 — Great Concept! *2010-01-07* Great app! App allows one to send "secret" messages to friends and family members without others knowing how to read. Love it! ## Frequently asked questions about Covert Mail ### Does Covert Mail have ads? Yes, Covert Mail contains advertisements. As a free application, it utilizes ads to support its development and continued availability. ### What is the learning method for Morse code in Covert Mail? Covert Mail uses the Koch method, teaching each character at full speed from the first lesson as a single sound. It also incorporates Farnsworth spacing, allowing for extra room between characters at your chosen speed to aid learning. ### Can I send coded messages to friends without the app? Yes, you can send coded messages to friends through any messaging app, with or without the key. Friends without the app can open and decode these messages directly in their web browser. ### How does Covert Mail track my progress? Your progress is saved directly on your phone and does not require an account. Practice sessions are designed around the characters you get wrong, with missed characters reappearing later with clues until mastered. ### What historical ciphers are included in Covert Mail? Covert Mail includes fifteen historical ciphers such as Morse code, NATO phonetic alphabet, Caesar shift, Atbash, tap code, pigpen, Braille, Polybius square, flag semaphore, keyword cipher, Vigenère, rail fence, ROT13, substitution cipher, and book cipher. ### Is Covert Mail suitable for protecting real secrets? No, Covert Mail is designed for learning and fun with classical codes only. It is not intended for protecting real secrets or for professional cryptographic use. ### How often is Covert Mail updated? The application was last updated on October 19, 2026, indicating a recent update. The app first appeared on the App Store in 2009 and this is a rebuilt version. ### What devices does Covert Mail support? Covert Mail is available on iPhone, iPad, and iPod. It is rated for ages 4 and up. ## Version history (last 2 releases) ### 2.0.0 — 2026-10-19 Covert Mail is back, rebuilt from the ground up. Learn Morse code by ear with the Koch method, then send it on a brass key. Work through fifteen dossiers of historical codes and ciphers with your handler's notes, decode a daily intercept, and send coded messages to friends from the cipher desk. ### 1.0 — 2010-01-04 No release notes. ## More apps by Illumination Development, L.L.C. - [Community Stress First Aid](https://appshunter.io/ios/app/community-stress-first-aid/id466283645) - [Krupnik & Speas](https://appshunter.io/ios/app/krupnik-and-speas/id1145161050) - [Step And Earn](https://appshunter.io/ios/app/step-and-earn/id6780640683) - [Daily: Learn And Earn](https://appshunter.io/ios/app/daily-learn-and-earn/id6784508839) - [Play And Earn](https://appshunter.io/ios/app/play-and-earn/id6792625951) All apps by Illumination Development, L.L.C.: https://appshunter.io/developer/347689003 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-19.*