# FastMath 360IQ vs CHESS/RUPT

The clearest difference is in-app purchases: FastMath 360IQ at none against CHESS/RUPT's 1. FastMath 360IQ also leads on update cadence (every 6 days vs every 2 weeks) and iOS requirement (12.0 vs 17.0). CHESS/RUPT's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. CHESS/RUPT sells 1 one-off in-app purchase. FastMath 360IQ asks for nothing beyond the download.

FastMath 360IQ ships an update every 6 days, CHESS/RUPT every 2 weeks. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | FastMath 360IQ | CHESS/RUPT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chessrupt-arcade-chess/id6779024949/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 67 MB | 26 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sorawit Tonpitak](https://appshunter.io/developer/1723424142) | [Ankur Gupta LLC](https://appshunter.io/developer/6779024951) |

## What reviewers say

### FastMath 360IQ

[App page](https://appshunter.io/ios/app/fastmath-360iq/id6475139290)

**Features:** macOS Compatibility

**In-app purchases:** none


### CHESS/RUPT

[App page](https://appshunter.io/ios/app/chessrupt-arcade-chess/id6779024949)

This turn-based arcade survival game offers a unique twist on chess. Players move familiar pieces across a dynamic board that cracks and falls away, requiring strategic adaptation to survive. It features daily challenges, various game modes, and an optional upgrade for unlimited plays.

**Highlights:** Turn-based arcade survival gameplay, Dynamic, changing game board, Daily Challenge mode, Crown Trials for streak scores, Multiple game modes (Arcade, Puzzle, Battle), Optional unlimited plays upgrade

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Plays | $2.99 | one-time |


## Frequently asked questions

### Is FastMath 360IQ free?

FastMath 360IQ is free to download, with no in-app purchases.

### Is CHESS/RUPT free?

CHESS/RUPT is free to download, with in-app purchases available.

### Do FastMath 360IQ or CHESS/RUPT have ads?

FastMath 360IQ shows ads; CHESS/RUPT does not.

### Which is updated more often, FastMath 360IQ or CHESS/RUPT?

FastMath 360IQ ships an update every 6 days, and CHESS/RUPT every 2 weeks. Most recently, FastMath 360IQ was updated on September 8, 2026 and CHESS/RUPT on September 22, 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.*