# Covert Mail vs CipherKit

The clearest difference is ads: CipherKit at none against Covert Mail's shown. CipherKit also leads on update cadence (every 6 months vs every 103 months). Covert Mail's advantage is iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

Covert Mail ships an update every 103 months, CipherKit every 6 months. The most recent releases landed on November 13, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Covert Mail | CipherKit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/covert-mail-morse-and-ciphers/id347689000/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 103 months | **Every 6 months** |
| Monetization | Ad-supported | — |
| Size | 35 MB | 23 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | +4 |
| Developer | [Illumination Development, L.L.C.](https://appshunter.io/developer/347689003) | [Zossoz](https://appshunter.io/developer/1885670786) |

## What reviewers say

### Covert Mail

[App page](https://appshunter.io/ios/app/covert-mail-morse-and-ciphers/id347689000)

Learn and practice Morse code and various historical ciphers. Decode real messages, send your own coded communications, and explore the history behind each secret code.

**Highlights:** 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

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


### CipherKit

[App page](https://appshunter.io/ios/app/cipherkit-cipher-solver/id6760924474)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Covert Mail free?

Covert Mail is free to download, with no in-app purchases.

### Is CipherKit free?

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

### Do Covert Mail or CipherKit have ads?

Covert Mail shows ads; CipherKit does not.

### Which is updated more often, Covert Mail or CipherKit?

Covert Mail ships an update every 103 months, and CipherKit every 6 months. Most recently, Covert Mail was updated on November 13, 2026 and CipherKit on November 9, 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.*