# 21Moves | Cube Puzzle Solver vs WatchThisCube

The clearest difference is ratings volume: 21Moves | Cube Puzzle Solver at 59K against WatchThisCube's 12. 21Moves | Cube Puzzle Solver also leads on update cadence (weekly vs monthly). WatchThisCube's advantage is rating (5.0 vs 4.7) and review sentiment (80% vs 70%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 21Moves | Cube Puzzle Solver sells 10 in-app purchases, starting at $1.99 per month and WatchThisCube sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

WatchThisCube holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 21Moves | Cube Puzzle Solver has 59K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 70% of 21Moves | Cube Puzzle Solver's written reviews are positive against 80% of WatchThisCube's.

21Moves | Cube Puzzle Solver ships an update weekly, WatchThisCube monthly. The most recent releases landed on September 25, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | 21Moves | Cube Puzzle Solver | WatchThisCube |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (59K ratings)](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/watchthiscube/id1547074856/reviews)** |
| Number of ratings | **59K** | 12 |
| Positive reviews | 69.6% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 157 MB | 7 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Opitas Inc.](https://appshunter.io/developer/1526688601) | [Aaron Brannan](https://appshunter.io/developer/1540210534) |

## 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


### WatchThisCube

[App page](https://appshunter.io/ios/app/watchthiscube/id1547074856)

This app provides a convenient puzzle timer directly on your wrist. It features customizable sounds and haptic feedback for crucial countdowns, allowing for hands-free operation. Times are automatically saved for easy tracking of your performance.

**Highlights:** On-wrist puzzle timer, Sound and haptic feedback, Inspection time alerts, Automatic time saving, Stackmat timer functionality, Detachable watch use

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $0.99 Tip | $0.99 | one-time |
| $2.99 Tip | $2.99 | one-time |
| $4.99 Tip | $4.99 | one-time |


## Frequently asked questions

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

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

### Is WatchThisCube free?

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

### Which has better reviews, 21Moves | Cube Puzzle Solver or WatchThisCube?

WatchThisCube is rated higher. 21Moves | Cube Puzzle Solver averages 4.7 out of 5 from 59K ratings, while WatchThisCube averages 5.0 from 12 ratings.

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

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

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

21Moves | Cube Puzzle Solver ships an update weekly, and WatchThisCube monthly. Most recently, 21Moves | Cube Puzzle Solver was updated on September 25, 2026 and WatchThisCube on August 11, 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.*