# Sudoku Solver AI vs 21Moves | Cube Puzzle Solver

The clearest difference is rating: 21Moves | Cube Puzzle Solver at 4.7 against Sudoku Solver AI's 3.0. 21Moves | Cube Puzzle Solver also leads on ads (none vs shown) and ratings volume (60K vs 2). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sudoku Solver AI sells 4 in-app purchases, starting at $4.99 per month and 21Moves | Cube Puzzle Solver sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

21Moves | Cube Puzzle Solver holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: 21Moves | Cube Puzzle Solver has 60K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Sudoku Solver AI's written reviews are positive against 70% of 21Moves | Cube Puzzle Solver's.

Sudoku Solver AI ships an update fortnightly, 21Moves | Cube Puzzle Solver weekly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sudoku Solver AI | 21Moves | Cube Puzzle Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/sudoku-solver-ai-hints/id1450071180/reviews) | **[4.7 (60K ratings)](https://appshunter.io/ios/app/21moves-cube-puzzle-solver/id1533263247/reviews)** |
| Number of ratings | 2 | **60K** |
| Positive reviews | 50.0% of reviews | **69.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 84 MB | 157 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mohit Singi](https://appshunter.io/developer/1008735375) | [Opitas Inc.](https://appshunter.io/developer/1526688601) |

## What reviewers say

### Sudoku Solver AI

[App page](https://appshunter.io/ios/app/sudoku-solver-ai-hints/id1450071180)

This app uses AI and text recognition to solve Sudoku puzzles from photos, screenshots, or manual input. Get hints, play, share, or print your puzzles. An in-app purchase removes ads.

**Highlights:** AI-powered Sudoku solving, Camera and screenshot import, Manual input mode, Get hints for cells, Play, share, and print puzzles, User guide included

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $4.99 | per month |
| 1 Year | $7.99 | per year |
| 6 Month | $7.99 | per 6 months |
| Life Time Pro | $9.99 | one-time |


### 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


## Frequently asked questions

### Is Sudoku Solver AI free?

Sudoku Solver AI is free to download, with in-app purchases available.

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

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

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

21Moves | Cube Puzzle Solver is rated higher. Sudoku Solver AI averages 3.0 out of 5 from 2 ratings, while 21Moves | Cube Puzzle Solver averages 4.7 from 60K ratings.

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

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

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

Sudoku Solver AI ships an update fortnightly, and 21Moves | Cube Puzzle Solver weekly. Most recently, Sudoku Solver AI was updated on October 29, 2026 and 21Moves | Cube Puzzle Solver on October 31, 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.*