# KenKen Classic vs Mathdoku + Calcudoku

The clearest difference is rating: KenKen Classic at 4.6 against Mathdoku + Calcudoku's 1.0. KenKen Classic also leads on ratings volume (3.2K vs 1) and update cadence (every 4 months vs every 12 months). Mathdoku + Calcudoku's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases and device support there is nothing between them.

Both are free to download. KenKen Classic sells 6 in-app purchases, starting at $19.99 per year and Mathdoku + Calcudoku sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KenKen Classic holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: KenKen Classic has 3.2K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of KenKen Classic's written reviews are positive against 60% of Mathdoku + Calcudoku's.

KenKen Classic ships an update every 4 months, Mathdoku + Calcudoku every 12 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | KenKen Classic | Mathdoku + Calcudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (3.2K ratings)](https://appshunter.io/ios/app/kenken-classic/id485694706/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/mathdoku-plus-calcudoku/id791155185/reviews) |
| Number of ratings | **3.2K** | 1 |
| Positive reviews | **72.7% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 40 MB | 9 MB |
| Requires iOS | 12.1 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KenKen Puzzle](https://appshunter.io/developer/485694769) | [Marco Gentili](https://appshunter.io/developer/482764510) |

## What reviewers say

### KenKen Classic

[App page](https://appshunter.io/ios/app/kenken-classic/id485694706)

Engage your mind with this addictive logic and math puzzle game. It offers a virtually unlimited supply of challenges with adjustable difficulty and grid sizes. Enjoy a fun way to train your brain with a trusted source of daily puzzles.

**Highlights:** Unlimited puzzles, Adjustable difficulty and grid size, Multiple input modes, Hints, Undo, Redo, Reset, Online leaderboards, Color schemes and music options

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Year Subscription NO ADS! | $19.99 | per year |
| 500 KenKen toKENs | $0.99 | one-time |
| 31 Puzzles PLUS removal of all ads! | $1.99 | one-time |
| 250 Puzzles PLUS removal of all ads! | $7.99 | one-time |
| 1000 Puzzles PLUS removal of all ads! | $14.99 | one-time |
| Annual Unlimited Subscription - Ad Free | $19.99 | one-time |

**What reviewers like**

- 👍 Fun and challenging puzzles
- 🧠 Helps improve math and logic skills
- ⭐ Great variety of puzzle sizes and difficulties
- 🏆 Satisfying to solve puzzles
- 💻 Clean and intuitive user interface

**What reviewers complain about**

- 🔒 Limited number of free puzzles
- 💰 Expensive in-app purchases for more puzzles
- 🐛 Buggy undo/redo functionality
- 🔀 Cursor/selection issues when switching between note-taking and number entry
- 📢 Intrusive ads

**Reported bugs**

- Puzzles disappearing after device reset or upgrade
- Purchased puzzles not syncing across devices
- App crashing or freezing

**Requested features**

- Dark mode option
- Ability to save and revert puzzle progress
- No-op puzzles for advanced players
- Improved puzzle loading and syncing across devices


### Mathdoku + Calcudoku

[App page](https://appshunter.io/ios/app/mathdoku-plus-calcudoku/id791155185)

This game combines arithmetic and logic puzzles, similar to Sudoku. Fill grids with numbers based on row, column, and cage calculations. It offers multiple grid sizes and difficulty levels.

**Highlights:** Sudoku-like grid filling, Arithmetic and logic challenges, Cage-based calculations, Multiple grid sizes (4x4 to 9x9), Varying difficulty levels

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove iAd Banner | $0.99 | one-time |
| Full Version | $0.99 | one-time |


## Frequently asked questions

### Is KenKen Classic free?

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

### Is Mathdoku + Calcudoku free?

Mathdoku + Calcudoku is free to download, with in-app purchases available.

### Which has better reviews, KenKen Classic or Mathdoku + Calcudoku?

KenKen Classic is rated higher. KenKen Classic averages 4.6 out of 5 from 3.2K ratings, while Mathdoku + Calcudoku averages 1.0 from 1 ratings.

### Do KenKen Classic or Mathdoku + Calcudoku have ads?

KenKen Classic shows ads; Mathdoku + Calcudoku does not.

### Which is updated more often, KenKen Classic or Mathdoku + Calcudoku?

KenKen Classic ships an update every 4 months, and Mathdoku + Calcudoku every 12 months. Most recently, KenKen Classic was updated on November 6, 2026 and Mathdoku + Calcudoku on November 1, 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.*