# 21Moves | Cube Puzzle Solver vs Qubo

The clearest difference is ads: 21Moves | Cube Puzzle Solver at none against Qubo's shown. 21Moves | Cube Puzzle Solver also leads on update cadence (weekly vs every 2 months) and ratings volume (59K vs 3). On price, rating, review sentiment and in-app purchases 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 Qubo sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for 21Moves | Cube Puzzle Solver against 4.7 for Qubo. That said, the two scores are not equally well evidenced: 21Moves | Cube Puzzle Solver has 59K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 70% of 21Moves | Cube Puzzle Solver's written reviews are positive against 75% of Qubo's.

21Moves | Cube Puzzle Solver ships an update weekly, Qubo every 2 months. The most recent releases landed on September 25, 2026 and August 5, 2026 respectively.

## The numbers

| Metric | 21Moves | Cube Puzzle Solver | Qubo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (59K ratings)](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/qubo-puzzle-cube-timer/id1639028980/reviews) |
| Number of ratings | **59K** | 3 |
| Positive reviews | 69.6% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 157 MB | 9 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Opitas Inc.](https://appshunter.io/developer/1526688601) | [DigitalSandbox, LLC](https://appshunter.io/developer/1013994213) |

## 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


### Qubo

[App page](https://appshunter.io/ios/app/qubo-puzzle-cube-timer/id1639028980)

This app provides a distraction-free timer for puzzle cube enthusiasts to track and improve their solving times. It features precision timing, automatic personal best tracking, and a clean interface to help users focus on their performance.

**Highlights:** Precision timing to hundredths of a second, Hold-to-start system, Automatic personal best tracking, Clean, minimalist interface, Progress saving for all records, Supports multiple cube types

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock 2×2 Cube | $0.99 | one-time |
| Unlock Pyraminx Cube | $0.99 | one-time |
| Unlock 4×4 Cube | $0.99 | one-time |
| Unlock Windmill Cube | $0.99 | one-time |
| Unlock All Cubes | $2.99 | 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 Qubo free?

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

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

21Moves | Cube Puzzle Solver is rated higher. 21Moves | Cube Puzzle Solver averages 4.7 out of 5 from 59K ratings, while Qubo averages 4.7 from 3 ratings.

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

Qubo shows ads; 21Moves | Cube Puzzle Solver does not.

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

21Moves | Cube Puzzle Solver ships an update weekly, and Qubo every 2 months. Most recently, 21Moves | Cube Puzzle Solver was updated on September 25, 2026 and Qubo on August 5, 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.*