# Sudoku Puzzle Solver vs Cache Notifier

The clearest difference is price: Sudoku Puzzle Solver at Free against Cache Notifier's $2.99. Sudoku Puzzle Solver also leads on rating (4.7 vs 3.0) and ratings volume (18 vs 2). Cache Notifier's advantage is ads (none vs shown) and update cadence (every 2 months vs every 38 months). On in-app purchases and device support there is nothing between them.

Sudoku Puzzle Solver is free to download; Cache Notifier costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sudoku Puzzle Solver holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Sudoku Puzzle Solver has 18 ratings behind it against 2, so its average is the more settled of the two.

Sudoku Puzzle Solver ships an update every 38 months, Cache Notifier every 2 months. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sudoku Puzzle Solver | Cache Notifier |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.7 (18 ratings)](https://appshunter.io/ios/app/sudoku-puzzle-solver/id1527437039/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/cache-notifier/id6648798407/reviews) |
| Number of ratings | **18** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 38 months | **Every 2 months** |
| Monetization | **Ad-supported** | Paid |
| Size | 5 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [aZeR DiLLs](https://appshunter.io/developer/491310978) | [Nicolas Camenisch](https://appshunter.io/developer/1122054654) |

## What reviewers say

### Sudoku Puzzle Solver

[App page](https://appshunter.io/ios/app/sudoku-puzzle-solver/id1527437039)

This app quickly solves Sudoku puzzles of any difficulty level. It highlights solved cells in green and can identify invalid or unsolvable puzzles. Users can also use a 'PEEK' feature to see possible values for each cell, acting as a manual solving assistant.

**Highlights:** Solves Sudoku puzzles in seconds, Supports easy, medium, hard, and expert difficulties, Identifies invalid or unsolvable puzzles, Highlights solved cells in green, PEEK feature shows possible cell values, Acts as a manual solving assistant

**Features:** macOS Compatibility

**In-app purchases:** none


### Cache Notifier

[App page](https://appshunter.io/ios/app/cache-notifier/id6648798407)

This app automatically updates your location for geocaching services, ensuring you're notified of new caches nearby. It helps you find new geocaches quickly, even when traveling, without manual updates.

**Highlights:** Automatic location updates, Real-time new cache notifications, Helps snag First To Find (FTF), Effortless travel updates, Requires Project-GC premium

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku Puzzle Solver free?

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

### Is Cache Notifier free?

Cache Notifier costs $2.99, with no in-app purchases.

### Which has better reviews, Sudoku Puzzle Solver or Cache Notifier?

Sudoku Puzzle Solver is rated higher. Sudoku Puzzle Solver averages 4.7 out of 5 from 18 ratings, while Cache Notifier averages 3.0 from 2 ratings.

### Do Sudoku Puzzle Solver or Cache Notifier have ads?

Sudoku Puzzle Solver shows ads; Cache Notifier does not.

### Which is updated more often, Sudoku Puzzle Solver or Cache Notifier?

Sudoku Puzzle Solver ships an update every 38 months, and Cache Notifier every 2 months. Most recently, Sudoku Puzzle Solver was updated on September 29, 2026 and Cache Notifier on October 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.*