# HTML Sandbox³ vs Keyboard Extension

The clearest difference is rating: Keyboard Extension at 4.9 against HTML Sandbox³'s 4.0. Keyboard Extension also leads on ratings volume (31 vs 4). HTML Sandbox³'s advantage is in-app purchases (none vs 6) and update cadence (daily vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Keyboard Extension sells 6 one-off in-app purchases. HTML Sandbox³ asks for nothing beyond the download.

Keyboard Extension holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Keyboard Extension has 31 ratings behind it against 4, so its average is the more settled of the two.

HTML Sandbox³ ships an update daily, Keyboard Extension monthly. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | HTML Sandbox³ | Keyboard Extension |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/html-sandbox/id6467677088/reviews) | **[4.9 (31 ratings)](https://appshunter.io/ios/app/keyboard-extension-snipkey/id6480381137/reviews)** |
| Number of ratings | 4 | **31** |
| Positive reviews | — | 90.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 19 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Eric Roembach](https://appshunter.io/developer/1632108694) | [Jonathan Taveras](https://appshunter.io/developer/1270478820) |

## What reviewers say

### HTML Sandbox³

[App page](https://appshunter.io/ios/app/html-sandbox/id6467677088)

Design custom lock and home screens with dynamic shortcuts for weather, battery, calendar, and RSS feeds. Join a large community for themes and support.

**Highlights:** Custom lock screen design, Custom home screen design, Dynamic shortcut integration, Weather shortcuts, Battery status shortcuts, Calendar event shortcuts, RSS feed shortcuts

**In-app purchases:** none


### Keyboard Extension

[App page](https://appshunter.io/ios/app/keyboard-extension-snipkey/id6480381137)

Manage text snippets and images with a custom keyboard extension. Save time by quickly accessing and organizing your frequently used content across all applications. Features include encryption and FaceID/TouchID protection for sensitive data.

**Highlights:** Custom keyboard extension, Text and image snippet management, Tag-based organization, Encryption for sensitive data, FaceID/TouchID protection, Universal app compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Candy Tip | $1.99 | one-time |
| Juice Tip | $4.99 | one-time |
| Juice Tip | $9.99 | one-time |
| Ramen Tip | $14.99 | one-time |
| Burget Tip | $29.99 | one-time |
| Caviar Tip | $99.99 | one-time |


## Frequently asked questions

### Is HTML Sandbox³ free?

HTML Sandbox³ is free to download, with no in-app purchases.

### Is Keyboard Extension free?

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

### Which has better reviews, HTML Sandbox³ or Keyboard Extension?

Keyboard Extension is rated higher. HTML Sandbox³ averages 4.0 out of 5 from 4 ratings, while Keyboard Extension averages 4.9 from 31 ratings.

### Do HTML Sandbox³ or Keyboard Extension have ads?

Neither HTML Sandbox³ nor Keyboard Extension shows ads.

### Which is updated more often, HTML Sandbox³ or Keyboard Extension?

HTML Sandbox³ ships an update daily, and Keyboard Extension monthly. Most recently, HTML Sandbox³ was updated on September 11, 2026 and Keyboard Extension on September 8, 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.*