# Calculation Solitaire vs Killer Sudoku by Sudoku.com

The clearest difference is rating: Killer Sudoku by Sudoku.com at 4.7 against Calculation Solitaire's 2.8. Killer Sudoku by Sudoku.com also leads on update cadence (every 2 months vs every 12 months) and ratings volume (219K vs 4). Calculation Solitaire's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Killer Sudoku by Sudoku.com sells 1 one-off in-app purchase. Calculation Solitaire asks for nothing beyond the download.

Killer Sudoku by Sudoku.com holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Killer Sudoku by Sudoku.com has 219K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Calculation Solitaire's written reviews are positive against 45% of Killer Sudoku by Sudoku.com's.

Calculation Solitaire ships an update every 12 months, Killer Sudoku by Sudoku.com every 2 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Calculation Solitaire | Killer Sudoku by Sudoku.com |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/calculation-solitaire/id938401085/reviews) | **[4.7 (219K ratings)](https://appshunter.io/ios/app/killer-sudoku-by-sudokucom/id1505735640/reviews)** |
| Number of ratings | 4 | **219K** |
| Positive reviews | 25.0% of reviews | **44.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 18 MB | 237 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [MmpApps Corp.](https://appshunter.io/developer/400209427) | [Easybrain Ltd](https://appshunter.io/developer/1190815537) |

## What reviewers say

### Calculation Solitaire

[App page](https://appshunter.io/ios/app/calculation-solitaire/id938401085)

A unique solitaire game where the objective is to move all cards to the foundation piles, but with a twist: foundation piles are built by stepping up by a specific number, ignoring suits. A hint card guides players through the challenging gameplay.

**Highlights:** Unique foundation building by number steps, Hint card for planning, Stashing columns for cards, Adjustable difficulty levels, Bonus game mode

**Features:** macOS Compatibility

**In-app purchases:** none


### Killer Sudoku by Sudoku.com

[App page](https://appshunter.io/ios/app/killer-sudoku-by-sudokucom/id1505735640)

Engage your mind with this number puzzle game, offering thousands of levels and daily challenges. It provides a unique twist on classic sudoku with cage-based sum puzzles, suitable for all skill levels. Hints and notes are available to help you master the game.

**Highlights:** Thousands of Killer Sudoku levels, Daily challenges with unique trophies, Seasonal events for special medals, Hints and notes for assistance, Enhanced gameplay for all skill levels, Brain-training puzzles

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Killer Sudoku No Ads | $14.99 | one-time |

**What reviewers like**

- 👍 Challenging game
- 🚀 Great time-filler
- 💡 Unique take on Sudoku
- 👍 Enjoyable experience
- 👍 Solid game play

**What reviewers complain about**

- 🔍 Too many ads
- 🔍 Ads interrupt gameplay
- 🐛 Bugs and glitches
- 🔍 Excessive ads for free version
- 🔍 Ads disrupt concentration

**Reported bugs**

- Incorrect puzzle solutions
- Scoring and stats issues
- Screen orientation problems
- Game freezing and crashing
- Unresponsive controls

**Requested features**

- Option to toggle number combinations
- Ability to lock correct numbers
- Improved hint system
- Customizable font and color options
- Progress sync between devices


## Frequently asked questions

### Is Calculation Solitaire free?

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

### Is Killer Sudoku by Sudoku.com free?

Killer Sudoku by Sudoku.com is free to download, with in-app purchases available.

### Which has better reviews, Calculation Solitaire or Killer Sudoku by Sudoku.com?

Killer Sudoku by Sudoku.com is rated higher. Calculation Solitaire averages 2.8 out of 5 from 4 ratings, while Killer Sudoku by Sudoku.com averages 4.7 from 219K ratings.

### Do Calculation Solitaire or Killer Sudoku by Sudoku.com have ads?

Both Calculation Solitaire and Killer Sudoku by Sudoku.com show ads.

### Which is updated more often, Calculation Solitaire or Killer Sudoku by Sudoku.com?

Calculation Solitaire ships an update every 12 months, and Killer Sudoku by Sudoku.com every 2 months. Most recently, Calculation Solitaire was updated on November 1, 2026 and Killer Sudoku by Sudoku.com on November 8, 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.*