# 8! Challenge vs Chess with Robots

The clearest difference is in-app purchases: 8! Challenge at none against Chess with Robots's 3. Chess with Robots's advantage is update cadence (every 4 days vs every 97 months) and iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Chess with Robots sells 3 one-off in-app purchases. 8! Challenge asks for nothing beyond the download.

8! Challenge ships an update every 97 months, Chess with Robots every 4 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 8! Challenge | Chess with Robots |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/8-challenge-dice-puzzle/id1436617801/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 97 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 65 MB | 91 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thang Vu](https://appshunter.io/developer/1269408753) | [Adrian McPhee](https://appshunter.io/developer/1523171224) |

## What reviewers say

### 8! Challenge

[App page](https://appshunter.io/ios/app/8-challenge-dice-puzzle/id1436617801)

A brain-teasing puzzle game where you fill a 4x4 board with dice numbered 1-6. Rows or columns summing to 8 merge and disappear, requiring strategic play to avoid filling the board and losing.

**Highlights:** 4x4 board puzzle, Dice merging mechanic, Strategic gameplay, Brain training, Simple rules, challenging play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Chess with Robots

[App page](https://appshunter.io/ios/app/chess-with-robots/id1543684589)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 0LU | $0.99 | one-time |
| L1V | $0.99 | one-time |
| 0scar | $0.99 | one-time |


## Frequently asked questions

### Is 8! Challenge free?

8! Challenge is free to download, with no in-app purchases.

### Is Chess with Robots free?

Chess with Robots is free to download, with in-app purchases available.

### Do 8! Challenge or Chess with Robots have ads?

Both 8! Challenge and Chess with Robots show ads.

### Which is updated more often, 8! Challenge or Chess with Robots?

8! Challenge ships an update every 97 months, and Chess with Robots every 4 days. Most recently, 8! Challenge was updated on October 24, 2026 and Chess with Robots on October 12, 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.*