Killer Sudoku by Sudoku.com vs Tower Clock
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Killer Sudoku by Sudoku.com
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.
- 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
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Enjoy an engaging Killer Sudoku experience! Jump into enhanced gameplay, solve tons of puzzles, train your brain, and have fun! Discover the new brain-training puzzle from the developer of Sudoku.com! Killer Sudoku by Sudoku.com is great for both beginners and advanced players. Although Killer Sudoku is harder than classic sudoku, we made it accessible for players of all skill levels. With its enhanced gameplay, it's easy to follow the game rules and become a sudoku master in no time. Explore Killer Sudoku and discover a refreshing take on the classic paper-and-pencil sudoku puzzle. What you get: * Killer Sudoku puzzles to expand your sudoku experience. * Thousands of levels to solve. * Daily challenges to win unique trophies. * Seasonal events to get unique medals. * Hints and notes to guide you when you get stuck. * Tons of gameplay to challenge your brain. * New game from a top developer! How to play: * Fill all rows, columns, and 3x3 regions with numbers exactly like classic sudoku. * Every cell is part of a cage, indicated by dotted lines. * Make sure the cells can be added up to the sum in the upper left corner of the cage. * The sum of all numbers of each 3x3 region, row or column always equals to 45. * Numbers cannot repeat within cages, a single row, column, or 3x3 region. Dive into the world of Killer Sudoku! Play anywhere, anytime!
Tower Clock
A digital companion for physical brick-stacking games, this app introduces new rules and time-based challenges. Compete against friends and the clock in a fun, interactive way.
- Companion app for physical games
- New game rules
- Timed challenges
- Multiplayer support
- Stacking gameplay
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Play a tower-stacking game with your friends using the new rules and compete against the clock. This application is designed to be used in companion with any physical wooden brick-stacking board game.
Screenshots
Verdict
The clearest difference is price: Killer Sudoku by Sudoku.com at Free against Tower Clock's $1.99. Killer Sudoku by Sudoku.com also leads on rating (4.7 vs 1.0) and update cadence (every 2 months vs every 23 months). Tower Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Killer Sudoku by Sudoku.com is free to download; Tower Clock costs $1.99 up front. Killer Sudoku by Sudoku.com sells 1 one-off in-app purchase. Tower Clock asks for nothing beyond the download.
Killer Sudoku by Sudoku.com holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Killer Sudoku by Sudoku.com has 219K ratings behind it against 1, so its average is the more settled of the two.
Killer Sudoku by Sudoku.com ships an update every 2 months, Tower Clock every 23 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Killer Sudoku by Sudoku.com | Tower Clock |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.7 (219K ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 44.9% of reviews | — |
| Number of ratings | 219K — better | 1 |
| Update frequency | Every 2 months — better | Every 23 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 237 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Easybrain Ltd | Adam Kopec |
Customer experience
Killer Sudoku by Sudoku.com
Tower Clock
Bugs and requests
Killer Sudoku by Sudoku.com
Reported bugs
5 issues- Incorrect puzzle solutions
- Scoring and stats issues
- Screen orientation problems
- Game freezing and crashing
- Unresponsive controls
Requested features
6 requests- Option to toggle number combinations
- Ability to lock correct numbers
- Improved hint system
- Customizable font and color options
- Progress sync between devices
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- Difficulty level adjustments
Tower Clock
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Killer Sudoku by Sudoku.com
- Killer Sudoku No Ads$14.99
Tower Clock
No in-app purchases
Questions
Is Killer Sudoku by Sudoku.com free?
Is Tower Clock free?
Which has better reviews, Killer Sudoku by Sudoku.com or Tower Clock?
Do Killer Sudoku by Sudoku.com or Tower Clock have ads?
Which is updated more often, Killer Sudoku by Sudoku.com or Tower Clock?
Other comparisons
