# お手軽暗号文章 > A hiragana-based encryption and decryption app. Enjoy combining five different types of encryption. No ads. Canonical page: [https://chrome-stats.com/d/io.github.ttool.himitsu](https://chrome-stats.com/d/io.github.ttool.himitsu) ## Overview - **ID:** `io.github.ttool.himitsu` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** t\_tool - **Category:** TOOLS - **Downloads:** 1 - **Last updated:** 2026-08-26 - **First published:** 2026-08-26 - **Publisher country:** JP - **Data as of:** 2026-09-24 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=io.github.ttool.himitsu) - **Website:** [https://mrzak0304.github.io/himitsu-site/](https://mrzak0304.github.io/himitsu-site/) - **Privacy policy:** [https://mrzak0304.github.io/himitsu-site/privacy.html](https://mrzak0304.github.io/himitsu-site/privacy.html) ## Description This is a "playable cipher" app using hiragana. Its official name is "Easy Cipher Messages (Secret Communication)".

Here's what you can do:
- Register a cipher code and send secret messages that only others can understand!
- Create countless patterns of cipher messages using 5 different cipher methods and sequence manipulations.
- You can even send images in fragments. Share memories only with those who know the code.

Main Features:
- Freely combine 5 ciphers: Tanuki cipher (character insertion), consonant conversion, Enigma dial, reverse reading, and rotation. You can also decide the application order, creating infinite variations even with the same sentence.
- Encrypt katakana and alphabet: Encrypt and decrypt not only hiragana but also mixed katakana and English text (excluding some ciphers).
- Image cipher: Turn photos into mosaic art. Completely hides with tile division + shuffle
- Quiz element: Generated keys are in a simple format like "1237 and 23 3123 4 55". The key itself can be used as the answer to a quiz.
- Save conditions: Save frequently used cipher combinations with names and recall them at any time (unlimited number).
- Save decryption keys: Save frequently used decryption keys for others with names (unlimited number).
- History management: Save up to 50 created ciphertexts and mosaic images on your device.
- Complete privacy: All processing is completed within the device. Input text and images are never sent externally.
- Offline operation: Usable without an internet connection (Kanji to Hiragana conversion is optional).

Target audience: People who like solving puzzles, people who want to exchange secrets with friends (late teens and up).

About this app:
- No ads are displayed.
- All features are available without ads.
- One-time purchase (300 yen). There are no in-app purchases.

Note:
- The encryption in this app is for fun and learning purposes only. Do not use it to protect confidential information. ## Rankings - #3,205,385 — Overall ## Similar extensions and apps - [お手軽暗号文章 広告つき](https://chrome-stats.com/d/io.github.ttool.himitsu.free) — 1 users - [暗号文 簡易暗号作成ツール](https://chrome-stats.com/d/com.companyname.memocode) — 50 users - [Cipherd](https://chrome-stats.com/d/com.apxdgtl.cipherd) — 25 users - [nazoCode](https://chrome-stats.com/d/com.jp.studioguu.nazocode) — 2 users - [ヒミツゴ](https://chrome-stats.com/d/com.himitsugo.app) — 13 users - [Cipher Orbit Rise Beige](https://chrome-stats.com/d/com.cipher.orbit.rise.beige) - [TileCipher](https://chrome-stats.com/d/com.qxmvnbkrwzhfdpgtjylc.tilepwk) — 1 users - [Cipherly: Encrypt & Hide](https://chrome-stats.com/d/com.xniperbuilds.cipherly) — 10 users - [CryptoText: Text Encryptor](https://chrome-stats.com/d/com.realbonds.cryptotext) — 91 users - [Cipher Khaki Zeal Act](https://chrome-stats.com/d/com.cipher.khaki.zeal.act) - [Cipher Sienna Dog Idle](https://chrome-stats.com/d/com.chefly.flavor.flavor_fusion_fire) — 9 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/io.github.ttool.himitsu)