# Sub Cipher vs ARK

The clearest difference is price: Sub Cipher at Free against ARK's $1.99. ARK's advantage is update cadence (every 10 days vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Sub Cipher is free to download; ARK costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sub Cipher ships an update every 7 months, ARK every 10 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sub Cipher | ARK |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/sub-cipher/id1582898316/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 40 MB | 3 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eduard Schwan](https://appshunter.io/developer/594336989) | [Gaelon Swift](https://appshunter.io/developer/1759501747) |

## What reviewers say

### Sub Cipher

[App page](https://appshunter.io/ios/app/sub-cipher/id1582898316)

Easily encode and decode messages using simple substitution ciphers like Caesar and Atbash. Convert up to 2,000 characters at a time and save your cipher settings for later use. Ideal for fun educational purposes, not for serious secret messaging.

**Highlights:** Encode/decode simple substitution ciphers, Supports Caesar and Atbash cipher methods, Converts up to 2,000 characters at once, Save cipher settings as text, Create magic decoder wheels, No licensing or royalties required for published ciphers

**Features:** Vision Pro support

**In-app purchases:** none


### ARK

[App page](https://appshunter.io/ios/app/ark-emergency-tools/id6758130776)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sub Cipher free?

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

### Is ARK free?

ARK costs $1.99, with no in-app purchases.

### Do Sub Cipher or ARK have ads?

Neither Sub Cipher nor ARK shows ads.

### Which is updated more often, Sub Cipher or ARK?

Sub Cipher ships an update every 7 months, and ARK every 10 days. Most recently, Sub Cipher was updated on October 24, 2026 and ARK on October 7, 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.*