# Sub Cipher vs Secret Keyboard

The clearest difference is rating: Secret Keyboard at 4.3 against Sub Cipher's 3.8. Secret Keyboard also leads on update cadence (every 3 days vs every 7 months) and iOS requirement (14.0 vs 16.6). Sub Cipher's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. Secret Keyboard sells 4 in-app purchases, starting at $0.99 per 7 days. Sub Cipher asks for nothing beyond the download.

Secret Keyboard holds the better App Store score, 4.3 against 3.8. Both are backed by a comparable volume of ratings — 4 and 6 respectively. Written reviews complicate that: 100% of Sub Cipher's written reviews are positive against 67% of Secret Keyboard's, so the app with the better star average is not the one people write more warmly about.

Sub Cipher ships an update every 7 months, Secret Keyboard every 3 days. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sub Cipher | Secret Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/sub-cipher/id1582898316/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/secret-keyboard/id1593100294/reviews)** |
| Number of ratings | 4 | **6** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 40 MB | 6 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eduard Schwan](https://appshunter.io/developer/594336989) | [Hex Array Inc.](https://appshunter.io/developer/1621788839) |

## 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


### Secret Keyboard

[App page](https://appshunter.io/ios/app/secret-keyboard/id1593100294)

This app provides a secure way to send and receive sensitive information through a specialized keyboard. It automatically encrypts your typed messages and allows you to decode received secret messages and sounds by copying them to the keyboard. Customize your typing experience with various themes.

**Highlights:** Send and receive secret messages, Decode secret messages and sounds, Automatic text encryption, Customizable keyboard themes, Pro version with auto-decode and ad-free experience

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Secret Keyboard Pro - Weekly | $0.99 | per 7 days |
| Secret Keyboard Pro - Monthly | $1.99 | per month |
| Secret Keyboard Pro - Yearly | $14.99 | per year |
| Secret Keyboard Pro - Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Sub Cipher free?

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

### Is Secret Keyboard free?

Secret Keyboard is free to download, with in-app purchases available.

### Which has better reviews, Sub Cipher or Secret Keyboard?

Secret Keyboard is rated higher. Sub Cipher averages 3.8 out of 5 from 4 ratings, while Secret Keyboard averages 4.3 from 6 ratings.

### Do Sub Cipher or Secret Keyboard have ads?

Secret Keyboard shows ads; Sub Cipher does not.

### Which is updated more often, Sub Cipher or Secret Keyboard?

Sub Cipher ships an update every 7 months, and Secret Keyboard every 3 days. Most recently, Sub Cipher was updated on October 1, 2026 and Secret Keyboard on October 14, 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.*