# 21Moves | Cube Puzzle Solver vs WatchScrambles

The clearest difference is price: 21Moves | Cube Puzzle Solver at Free against WatchScrambles's $0.99. 21Moves | Cube Puzzle Solver also leads on update cadence (weekly vs every 14 months). WatchScrambles's advantage is in-app purchases (none vs 11). On ads, device support and iOS requirement there is nothing between them.

21Moves | Cube Puzzle Solver is free to download; WatchScrambles costs $0.99 up front. 21Moves | Cube Puzzle Solver sells 10 in-app purchases, starting at $1.99 per month. WatchScrambles asks for nothing beyond the download.

21Moves | Cube Puzzle Solver ships an update weekly, WatchScrambles every 14 months. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 21Moves | Cube Puzzle Solver | WatchScrambles |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (60K ratings)](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247/reviews)** | — |
| Number of ratings | **60K** | — |
| Positive reviews | 69.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 14 months |
| Monetization | Free with in-app purchases | — |
| Size | 157 MB | 13 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Opitas Inc.](https://appshunter.io/developer/1526688601) | [Paul Scott](https://appshunter.io/developer/1542422467) |

## What reviewers say

### 21Moves | Cube Puzzle Solver

[App page](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247)

This app helps you solve your Rubik's Cube with visual, step-by-step instructions. It offers a quick solver, a cube scanner to analyze your current puzzle state, and even identifies missing or misplaced pieces. Become a puzzle-solving pro and improve your concentration and speed.

**Highlights:** 3D cube scanning, Visual step-by-step instructions, Quick cube solving, Cube fixer for missing/misplaced pieces, Puzzle skill building, Manual input for custom combinations

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $1.99 | per month |
| Unlimited Access | $3.99 | per month |
| Unlimited Access | $4.99 | per year |
| Unlimited Access | $7.99 | per year |
| Unlimited Access | $9.99 | per year |
| Unlimited Access | $14.99 | per year |
| Unlimited Access | $19.99 | per year |
| Unlimited Access | $24.99 | per year |
| Unlimited Access | $29.99 | one-time |
| Unlimited Access | $74.99 | one-time |

**What reviewers like**

- 🚀 Solves cube in 21 moves
- 👍 Easy to use and follow instructions
- 🚀 Solves cube quickly
- 👍 Helps fix broken/twisted cubes
- 👍 Accurate color recognition

**What reviewers complain about**

- 🐛 Scanning issues (glare, lighting)
- 💰 Requires payment after first use
- 🐛 App crashes or freezes
- 🐛 Inaccurate cube representation on screen

**Reported bugs**

- Scanning issues due to lighting conditions
- App crashing or freezing after first use
- Inaccurate cube representation on screen

**Requested features**

- Support for different cube sizes (2x2, 4x4, etc.)
- Option to skip tutorial
- Ability to solve cube without payment


### WatchScrambles

[App page](https://appshunter.io/ios/app/watchscrambles/id6446205784)

**In-app purchases:** none


## Frequently asked questions

### Is 21Moves | Cube Puzzle Solver free?

21Moves | Cube Puzzle Solver is free to download, with in-app purchases available.

### Is WatchScrambles free?

WatchScrambles costs $0.99, with no in-app purchases.

### Do 21Moves | Cube Puzzle Solver or WatchScrambles have ads?

Neither 21Moves | Cube Puzzle Solver nor WatchScrambles shows ads.

### Which is updated more often, 21Moves | Cube Puzzle Solver or WatchScrambles?

21Moves | Cube Puzzle Solver ships an update weekly, and WatchScrambles every 14 months. Most recently, 21Moves | Cube Puzzle Solver was updated on October 17, 2026 and WatchScrambles on September 30, 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.*