# 4Dice vs HappyKey

The clearest difference is review sentiment: 4Dice at 100% against HappyKey's 50%. 4Dice also leads on rating (4.8 vs 3.7) and iOS requirement (9.3 vs 17.6). HappyKey's advantage is update cadence (every 8 months vs every 18 months). On price, ratings volume, 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.

4Dice holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 4 and 9 respectively. Written reviews point the same way: 100% of 4Dice's written reviews are positive against 50% of HappyKey's.

4Dice ships an update every 18 months, HappyKey every 8 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | 4Dice | HappyKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/4dice/id453083422/reviews)** | [3.7 (9 ratings)](https://appshunter.io/ios/app/happykey/id965705471/reviews) |
| Number of ratings | 4 | **9** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 8 months** |
| Monetization | Free | Free |
| Size | 15 MB | 26 MB |
| Requires iOS | **9.3** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Andrew Hanson](https://appshunter.io/developer/665134004) | [Alexander Baratti](https://appshunter.io/developer/1264988386) |

## What reviewers say

### 4Dice

[App page](https://appshunter.io/ios/app/4dice/id453083422)

Explore a hypercube visualized as a 4-dimensional, 8-sided die. Interact with the die using multitouch controls to reveal its hidden faces as they come into view during rolls. Experience a unique perspective on geometric visualization.

**Highlights:** Multitouch controls, 4D hypercube exploration, Interactive die rolling, Geometric visualization, Unique perspective rendering

**Features:** macOS Compatibility

**In-app purchases:** none


### HappyKey

[App page](https://appshunter.io/ios/app/happykey/id965705471)

This app offers a specialized keyboard for easily inputting a wide range of mathematical symbols. It includes numbers, operators, pi, infinity, and more, simplifying the process of writing math notation on your device.

**Highlights:** Specialized math symbol keyboard, Includes numbers and operators, Supports pi and infinity symbols, Simplifies math notation input, Customizable keyboard layout

**In-app purchases:** none


## Frequently asked questions

### Is 4Dice free?

4Dice is free to download, with no in-app purchases.

### Is HappyKey free?

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

### Which has better reviews, 4Dice or HappyKey?

4Dice is rated higher. 4Dice averages 4.8 out of 5 from 4 ratings, while HappyKey averages 3.7 from 9 ratings.

### Do 4Dice or HappyKey have ads?

Neither 4Dice nor HappyKey shows ads.

### Which is updated more often, 4Dice or HappyKey?

4Dice ships an update every 18 months, and HappyKey every 8 months. Most recently, 4Dice was updated on November 6, 2026 and HappyKey on November 1, 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.*