| Core Identity |
| Developer | Optime Software LLC | Tripledot Studios | Digitalchemy, LLC | Appgeneration Software | Gimica GmbH | NewsLeap | puzzle studio | Seventh rank | The Chess Solitaire Sudoku Factory Ltd | PeopleFun CG, LLC |
| Category | Games | Games | Puzzle | Games | Puzzle | Games | Games | Board | Games | Games |
| Platform | iOS | Android, iOS | Android, iOS | Android, iOS | Android | iOS | iOS | Android, iOS | iOS, Android | Android, iOS |
| Store Metrics |
| Rating | 4.6 / 5 | 4.7 / 5 | 4.8 / 5 | 4.7 / 5 | 4.5 / 5 | 4.8 / 5 | 4.8 / 5 | 0.0 / 5 | 4.6 / 5 | 4.8 / 5 |
| Ratings Count | 10,798 | 103,986 | 19,845 | 532 | 22,850 | 19,430 | 34 | 0 | 599 | 14,222 |
| Price | Free | Free | Free | Free | Free | Free | Free | Free | Free | $4.99 |
| Release Date | Dec 14, 2010 | Sep 29, 2018 | Jun 1, 2017 | May 11, 2016 | Jan 27, 2023 | Jun 4, 2014 | Mar 20, 2024 | Dec 16, 2013 | May 18, 2012 | Jun 3, 2010 |
| Last Updated | Feb 20, 2024 | Jun 8, 2026 | Jan 8, 2026 | Mar 14, 2026 | Apr 29, 2026 | May 14, 2026 | Sep 18, 2024 | Nov 5, 2025 | Mar 15, 2026 | Jan 14, 2023 |
| Sentiment & Reviews |
| Sentiment | terrible | positive | positive | mixed | - | - | - | - | mixed | excellent |
| Score | 20/100 | 85/100 | 85/100 | 65/100 | - | - | - | - | 65/100 | 85/100 |
| Praises | - Core puzzle mechanics provide a satisfying and addictive mental challenge for long-term users
| - Elegant and simple design
| - Clean, ad-supported interface
| - The core sudoku gameplay loop provides a reliable and enjoyable daily pastime for casual players
| - | - | - | - | - Difficulty level selection allows players to choose between relaxing or challenging brain exercise sessions
| - Minimalist ad-free design allows for focused mental exercise during daily play sessions
|
| Complaints | - Aggressive full-screen video advertisements prevent users from accessing the main game menu
- Visual UI changes including high-contrast highlighting make the game board difficult to read
- Restoration of previous in-app purchases fails to sync after device migration or reinstallation
| - High ad frequency and no paid removal
| | - Paid ad removal fails to function correctly, leaving users with persistent advertisements after purchase
| - | - | - | - | - Screen scaling issues cause text and board elements to appear cropped on various devices
| - Inconsistent scoring algorithms fail to reward speed and accuracy during puzzle completion
|
| Requests | - Toggle options to disable high-contrast visual highlights and revert to the classic interface
| - More frequent content updates
| | - Automated error validation for incorrect number placement would improve the learning curve for players
| - | - | - | - | - Mistake correction or undo functionality for players to fix typos during challenging puzzle sessions
| - Advanced note-taking features like auto-filling candidates to save time during difficult puzzles
|
| Strategic Intel |
| Strengths | - Dual-keypad interface reduces input friction for power users
- Five-tier difficulty scaling extends user lifecycle
| - Aesthetic skin variety [iOS/Android]
- Intuitive pencil-mode note-taking [iOS/Android]
- Consistent 4.6+ rating [iOS]
| - Offline-first architecture enables consistent engagement
- Minimalist UI design lowers cognitive load
| - 21-feature configuration depth sustains long-term engagement
- Live radio integration provides a unique audio-retention hook
| - | - | - | - | - Manual newspaper import functions as a unique utility barrier for traditionalist users
- Advanced hint library for expert patterns sustains power-user session duration
- Six-tier difficulty scaling accommodates both casual and expert logic-puzzle segments
| - 36,000-puzzle library prevents early-game churn
- Offline-first architecture sustains engagement in low-connectivity environments
- Ad-free premium tier creates a distinct value proposition
|
| Weaknesses | - Aggressive ad-gate blocks core menu access
- High-contrast UI highlights cause visual fatigue
- In-app purchase restoration fails on device migration
| - Ad-only monetization model [Pricing Strategy]
- Static puzzle content [Feature Analysis]
- No paid ad-removal option [Pricing Strategy]
| - 0.7★ Android-iOS rating gap
- No cloud-save functionality
| - Paid ad-removal failure creates direct revenue-loss friction
- Low-contrast grid numbers limit accessibility for senior segments
| - | - | - | - | - Screen scaling regressions on modern devices hinder basic usability
- Lack of undo functionality forces punitive restarts during complex puzzle attempts
- Menu unresponsiveness post-game prevents new session initiation
| - $4.99 price point exceeds category median
- Scoring transparency issues drive user frustration
- Android-iOS feature parity gap erodes pro-user trust
|
| Pricing | free | free | freemium | freemium | free | freemium | freemium | free | freemium | freemium |
| Momentum | Zombie | - | - | Intense | - | Intense | - | Maintenance | Intense | Zombie |
| Update Cadence | 1 versions | - | - | 5 versions | - | 5 versions | - | 5 versions | 5 versions | 2 versions, 1 majors/6mo, ~1157d avg |
