# STutor vs Sudoku

The clearest difference is price: Sudoku at Free against STutor's $0.99. Sudoku also leads on update cadence (every 6 days vs every 28 months) and ratings volume (3 vs 1). STutor's advantage is iOS requirement (13.0 vs 15.0). On rating, review sentiment, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for STutor against 5.0 for Sudoku. 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 every 6 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | STutor | Sudoku |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/stutor/id714298825/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/sudoku-quiet/id6784529870/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 6 days** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 18 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Carlson](https://appshunter.io/developer/714298828) | [Jingeun Kim](https://appshunter.io/developer/6784529872) |

## 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

[App page](https://appshunter.io/ios/app/sudoku-quiet/id6784529870)

Enjoy a distraction-free Sudoku experience with no ads, accounts, or internet required. This app offers multiple game modes, helpful tools like notes and undo, and tracks your progress. It's designed for pure puzzle enjoyment.

**Highlights:** Ad-free experience, Offline play, Multiple game modes (Journey, Adaptive, Difficulty), Notes, undo, and erase tools, Progress tracking and records, Light and dark themes, Optional sound and haptics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STutor free?

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

### Is Sudoku free?

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

### Which has better reviews, STutor or Sudoku?

STutor and Sudoku are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do STutor or Sudoku have ads?

Neither STutor nor Sudoku shows ads.

### Which is updated more often, STutor or Sudoku?

STutor ships an update every 28 months, and Sudoku every 6 days. Most recently, STutor was updated on October 8, 2026 and Sudoku on October 9, 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.*