# STutor vs Sudoku 4000 & Solver

The clearest difference is price: Sudoku 4000 & Solver at Free against STutor's $0.99. Sudoku 4000 & Solver also leads on update cadence (every 11 months vs every 28 months) and ratings volume (3 vs 1). STutor's advantage is ads (none vs shown) and rating (5.0 vs 4.7). On review sentiment, in-app purchases and device support there is nothing between them.

Sudoku 4000 & Solver is free to download; STutor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

STutor holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

STutor ships an update every 28 months, Sudoku 4000 & Solver every 11 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | STutor | Sudoku 4000 & Solver |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stutor/id714298825/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/sudoku-4000-and-solver/id1444394241/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Every 11 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 2 MB | 10 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Carlson](https://appshunter.io/developer/714298828) | [Atsushi Hanai](https://appshunter.io/developer/1434592326) |

## What reviewers say

### STutor

[App page](https://appshunter.io/ios/app/stutor/id714298825)

This app assists in solving Sudoku puzzles by offering three levels of hints and employing five logical solving strategies. It allows manual puzzle entry or input via an 81-character string, with options to save, recall, and manage puzzles. The app validates entries against its solution and displays possible numbers for incorrect moves.

**Highlights:** Three levels of hints, Five logical solving strategies, Manual puzzle entry, 81-character string input, Puzzle saving and management, Entry validation against solution, Display of possible numbers

**In-app purchases:** none


### Sudoku 4000 & Solver

[App page](https://appshunter.io/ios/app/sudoku-4000-and-solver/id1444394241)

This app offers a vast collection of Sudoku puzzles across four difficulty levels, with a helpful solver feature. It includes tools for note-taking and error correction, plus an auto-save function to preserve your progress.

**Highlights:** 4 difficulty levels, Hint system, Notes with auto-fill, Auto-save, Undo function, 19 color themes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STutor free?

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

### Is Sudoku 4000 & Solver free?

Sudoku 4000 & Solver is free to download, with no in-app purchases.

### Which has better reviews, STutor or Sudoku 4000 & Solver?

STutor is rated higher. STutor averages 5.0 out of 5 from 1 ratings, while Sudoku 4000 & Solver averages 4.7 from 3 ratings.

### Do STutor or Sudoku 4000 & Solver have ads?

Sudoku 4000 & Solver shows ads; STutor does not.

### Which is updated more often, STutor or Sudoku 4000 & Solver?

STutor ships an update every 28 months, and Sudoku 4000 & Solver every 11 months. Most recently, STutor was updated on October 23, 2026 and Sudoku 4000 & Solver on October 24, 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.*