# 21Moves | Cube Puzzle Solver vs Chess Clock & Scorepad

The clearest difference is in-app purchases: Chess Clock & Scorepad at none against 21Moves | Cube Puzzle Solver's 10. 21Moves | Cube Puzzle Solver's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 21Moves | Cube Puzzle Solver sells 9 in-app purchases, starting at $1.99 per month. Chess Clock & Scorepad asks for nothing beyond the download.

21Moves | Cube Puzzle Solver ships an update weekly, Chess Clock & Scorepad every 11 days. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 21Moves | Cube Puzzle Solver | Chess Clock & Scorepad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (60K ratings)](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247/reviews)** | — |
| Number of ratings | **60K** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 11 days |
| Monetization | Free with in-app purchases | — |
| Size | 157 MB | 42 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Opitas Inc.](https://appshunter.io/developer/1526688601) | [Illumination Development, L.L.C.](https://appshunter.io/developer/347689003) |

## 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 (9)**

| 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 | $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


### Chess Clock & Scorepad

[App page](https://appshunter.io/ios/app/chess-clock-and-scorepad/id6822963399)

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

**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 Chess Clock & Scorepad free?

Chess Clock & Scorepad is free to download, with no in-app purchases.

### Do 21Moves | Cube Puzzle Solver or Chess Clock & Scorepad have ads?

Chess Clock & Scorepad shows ads; 21Moves | Cube Puzzle Solver does not.

### Which is updated more often, 21Moves | Cube Puzzle Solver or Chess Clock & Scorepad?

21Moves | Cube Puzzle Solver ships an update weekly, and Chess Clock & Scorepad every 11 days. Most recently, 21Moves | Cube Puzzle Solver was updated on November 11, 2026 and Chess Clock & Scorepad on November 10, 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.*