# Rainbow Monsters vs Screws Nut Puzzle

The clearest difference is price: Screws Nut Puzzle at Free against Rainbow Monsters's $0.99. Screws Nut Puzzle also leads on in-app purchases (none vs 1) and device support (3 vs 1). Rainbow Monsters's advantage is ads (none vs shown) and update cadence (every 2 months vs every 17 months).

Screws Nut Puzzle is free to download; Rainbow Monsters costs $0.99 up front. Rainbow Monsters sells 1 one-off in-app purchase. Screws Nut Puzzle asks for nothing beyond the download.

Rainbow Monsters ships an update every 2 months, Screws Nut Puzzle every 17 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Rainbow Monsters | Screws Nut Puzzle |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/rainbow-monsters/id913590386/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 17 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 141 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [NUIFISH LIMITED](https://appshunter.io/developer/525325232) | [Ddlyouxi](https://appshunter.io/developer/1565794681) |

## What reviewers say

### Rainbow Monsters

[App page](https://appshunter.io/ios/app/rainbow-monsters/id913590386)

A fun color-matching game where players guide monsters to eat falling rainbow pieces. Slide monsters left or right to match colors, with a numbers mode for easier identification. Compete with friends through Game Center and unlock achievements.

**Highlights:** Color matching gameplay, Monster character control, Falling rainbow pieces, Numbers mode for colorblind players, Game Center integration, 23 unlockable achievements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Screws Nut Puzzle

[App page](https://appshunter.io/ios/app/screws-nut-puzzle/id6478167634)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rainbow Monsters free?

Rainbow Monsters costs $0.99, and also offers in-app purchases.

### Is Screws Nut Puzzle free?

Screws Nut Puzzle is free to download, with no in-app purchases.

### Do Rainbow Monsters or Screws Nut Puzzle have ads?

Screws Nut Puzzle shows ads; Rainbow Monsters does not.

### Which is updated more often, Rainbow Monsters or Screws Nut Puzzle?

Rainbow Monsters ships an update every 2 months, and Screws Nut Puzzle every 17 months. Most recently, Rainbow Monsters was updated on November 6, 2026 and Screws Nut Puzzle on November 4, 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.*