# ROT13 Decoder — ROT13 decoder and encoder

> ROT13 decoder and encoder (iPhone/iPad app by 佳伟 蔡.)

- Source: https://appshunter.io/ios/app/rot13-decoder/id6743629613 (this page in markdown: same URL + `.md`)
- Developer: [佳伟 蔡](https://appshunter.io/developer/1801859662)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 16 MB
- Languages: American English
- Released: 2025-03-23
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/rot13-decoder/id6743629613/reviews.md

## What is ROT13 Decoder?

ROT13 Decoder is a simple yet powerful text encoding/decoding tool that supports ROT13, ROT5, and ROT18 encoding methods. Whether you're performing simple text encryption or need to quickly decode ROT-encrypted content, this app makes it effortless.

Key Features:
1. ROT13: Shifts letters by 13 positions
2. ROT5: Shifts numbers by 5 positions
3. ROT18: Shifts both letters and numbers simultaneously

Why Choose Us:
1. Completely offline operation for privacy protection
2. Clean and intuitive interface
3. One-click result copying
4. Zero learning curve, ready to use instantly

This lightweight yet practical tool puts powerful decoding capabilities right at your fingertips, making ROT-encoded text handling a breeze on your device.


## Version history (last 3 releases)

### 1.2 — 2026-08-14

fix bugs

### 1.1 — 2025-12-21

fix bug.

### 1.0 — 2025-03-23

No release notes.

## Apps similar to ROT13 Decoder

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Paranoia File Encryption PRO](https://appshunter.io/ios/app/paranoia-file-encryption-pro/id6449606072) | 5.0 (5) | $3.99 | Utilities |
| [Text Utility](https://appshunter.io/ios/app/text-utility/id6450723719) | — | Free | Utilities |
| [URL Redirector](https://appshunter.io/ios/app/url-redirector/id6743197230) | — | $4.99 | Utilities |
| [Sub Cipher](https://appshunter.io/ios/app/sub-cipher/id1582898316) | 3.8 (4) | Free | Utilities |
| [Base64 Encoder Decoder](https://appshunter.io/ios/app/base64-encoder-decoder/id1612435358) | 5.0 (3) | Free | Utilities |
| [cryptoolkit](https://appshunter.io/ios/app/cryptoolkit/id6739089376) | — | Free | Utilities |

## More apps by 佳伟 蔡

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All apps by 佳伟 蔡: https://appshunter.io/developer/1801859662

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*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 2026-08-17.*