# Cipher Sender vs ROT13 Decoder

The clearest difference is iOS requirement: Cipher Sender at 13.0 against ROT13 Decoder's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cipher Sender ships an update every 9 months, ROT13 Decoder every 8 months. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Cipher Sender | ROT13 Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (39 ratings)](https://appshunter.io/ios/app/cipher-sender/id548958077/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 94.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 8 months** |
| Monetization | Free | — |
| Size | 1 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Julian Tigler](https://appshunter.io/developer/1763289322) | [佳伟 蔡](https://appshunter.io/developer/1801859662) |

## What reviewers say

### Cipher Sender

[App page](https://appshunter.io/ios/app/cipher-sender/id548958077)

This app allows you to send secret messages to your friends using a variety of historical ciphers and codes. It supports popular encryption methods like Caesar Shift, Morse Code, and Vigenere Cipher. The application is open source, inviting community contributions.

**Highlights:** A1Z26 Cipher, Atbash Cipher, Caesar Shift Cipher, Morse Code, Vigenere Cipher, Open Source

**Features:** macOS Compatibility

**In-app purchases:** none


### ROT13 Decoder

[App page](https://appshunter.io/ios/app/rot13-decoder/id6743629613)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cipher Sender free?

Cipher Sender is free to download, with no in-app purchases.

### Is ROT13 Decoder free?

ROT13 Decoder is free to download, with no in-app purchases.

### Do Cipher Sender or ROT13 Decoder have ads?

Neither Cipher Sender nor ROT13 Decoder shows ads.

### Which is updated more often, Cipher Sender or ROT13 Decoder?

Cipher Sender ships an update every 9 months, and ROT13 Decoder every 8 months. Most recently, Cipher Sender was updated on October 4, 2026 and ROT13 Decoder on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*