# KenKen Classic vs Viper Puzzle

The clearest difference is in-app purchases: Viper Puzzle at none against KenKen Classic's 6. Viper Puzzle also leads on ads (none vs shown) and update cadence (fortnightly vs every 4 months). KenKen Classic's advantage is ratings volume (3.2K vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. KenKen Classic sells 6 in-app purchases, starting at $19.99 per year. Viper Puzzle asks for nothing beyond the download.

Viper Puzzle holds the better App Store score, 5.0 against 4.6. 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 100% of Viper Puzzle's.

KenKen Classic ships an update every 4 months, Viper Puzzle fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KenKen Classic | Viper Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (3.2K ratings)](https://appshunter.io/ios/app/kenken-classic/id485694706/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/viper-puzzle/id6765531411/reviews)** |
| Number of ratings | **3.2K** | 1 |
| Positive reviews | 72.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 40 MB | 41 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KenKen Puzzle](https://appshunter.io/developer/485694769) | [CESARE CELOZZI](https://appshunter.io/developer/1895982023) |

## 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


### Viper Puzzle

[App page](https://appshunter.io/ios/app/viper-puzzle/id6765531411)

Experience a unique snake game where strategy and spatial reasoning replace reflexes. Navigate intricate levels, collect eggs to grow your snake, and master precise tap-to-turn controls. This game offers a satisfying puzzle experience for short bursts or extended play.

**Highlights:** Hand-crafted puzzle levels, Precise tap-to-turn controls, In-game tutorial, Collect eggs to grow snake, Multiple snake skins, Offline play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KenKen Classic free?

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

### Is Viper Puzzle free?

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

### Which has better reviews, KenKen Classic or Viper Puzzle?

Viper Puzzle is rated higher. KenKen Classic averages 4.6 out of 5 from 3.2K ratings, while Viper Puzzle averages 5.0 from 1 ratings.

### Do KenKen Classic or Viper Puzzle have ads?

KenKen Classic shows ads; Viper Puzzle does not.

### Which is updated more often, KenKen Classic or Viper Puzzle?

KenKen Classic ships an update every 4 months, and Viper Puzzle fortnightly. Most recently, KenKen Classic was updated on November 1, 2026 and Viper Puzzle 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.*