| Core Identity |
| Developer | Yunbu | Easybrain Ltd | Shanghai Diguo Network Technology Co., Ltd. | UNICO STUDIO | Big Duck Games LLC | Tripledot Studios | Easybrain Ltd |
| Category | Games | Games | Games | Games | Games | Games | Games |
| Platform | Android, iOS | iOS, Android | iOS | iOS, Android | iOS, Android | Android, iOS | iOS |
| Store Metrics |
| Rating | 4.6 / 5 | 4.6 / 5 | 4.6 / 5 | 4.8 / 5 | 4.8 / 5 | 4.7 / 5 | 4.8 / 5 |
| Ratings Count | 32 | 227,704 | 17,522 | 3,963 | 392,918 | 656,118 | 1,816,450 |
| Price | Free | Free | Free | Free | Free | Free | Free |
| Release Date | Feb 4, 2021 | Oct 11, 2021 | Aug 1, 2024 | Jan 28, 2023 | Jun 7, 2012 | Mar 11, 2020 | Mar 30, 2017 |
| Last Updated | Mar 30, 2026 | Mar 26, 2026 | Feb 13, 2026 | Dec 19, 2025 | Jan 16, 2026 | May 28, 2026 | Mar 24, 2026 |
| Sentiment & Reviews |
| Sentiment | positive | negative | - | positive | positive | mixed | negative |
| Score | 85/100 | 35/100 | - | 75/100 | 75/100 | 45/100 | 22/100 |
| Praises | - Diverse visual skins provide a refreshing experience that makes the core gameplay feel entirely new
| | - | - Simple number matching mechanics provide an accessible and engaging experience for casual players
- Helpful boosters and power-ups assist players in navigating challenging levels during gameplay
- Reliable reward distribution after completing levels encourages continued play and long-term retention
| - Satisfying puzzle mechanics provide a relaxing and addictive mental challenge for daily play
| - Meditative and soothing puzzle mechanics provide a reliable daily stress relief habit for players
| |
| Complaints | - Dynamic mode logic failures prevent board progression when no valid moves remain for the player
| - Excessive and Intrusive Advertising
- Malicious/Scam Pop-ups
- Lack of Dark Mode
| - | - Excessive ad frequency during active gameplay disrupts the flow and frustrates the user base
- Technical instability during ad playback causes the game to freeze or fail to start
- Bouncing power-up animations create visual distraction and clutter on the screen during play
| - Aggressive advertising frequency interrupts the flow of gameplay and frustrates active users
| - Excessive ad frequency interrupts the flow of gameplay and forces frequent app restarts
| - Excessive Ad Frequency
- Malicious Ad Content
|
| Requests | - | - | - | - Option to disable distracting power-up animations to improve visual clarity during active play
| - Additional level content requested by long-term players who have completed all current challenges
| - Purchase option for an ad-free experience to remove current monetization friction
| - |
| Strategic Intel |
| Strengths | - Visual variety sustains session novelty
- Offline-first architecture captures low-connectivity segments
| - Massive market penetration (770k+ ratings)
- Robust seasonal event calendar and live-ops
- Strong cross-promotion within Easybrain portfolio
| - | - Editors' Choice-adjacent accessibility in core loop sustains high organic install velocity
- Target-based progression system creates specific failure states that drive prop consumption
| - Color-blind accessibility labels expand addressable market
- 2,500+ level library creates high switching costs
- Game Center integration gamifies long-term progress
| - Meditative puzzle loop sustains daily habit
- Offline-first architecture captures transit-based engagement
| - Massive scale (1.8M+ ratings) providing high ASO authority
- Strong live-ops via Seasonal Events and Daily Challenges
- Clean, preferred UI for core Sudoku gameplay
|
| Weaknesses | - Dynamic mode logic errors force session abandonment
- Lack of progression systems limits retention
| - Poor ad quality control (scam pop-ups)
- Missing Dark Mode (high-frequency user request)
- Clinical/Utility UI lacks brand personality
| - | - 4.7-star Android rating vs 4.8-star iOS rating indicates platform-specific technical instability
- Ad-insertion frequency is the #1 churn driver in user reviews
| - Ad-close button failure rate creates high friction
- Interstitial frequency exceeds user tolerance
- Lack of meta-progression layer limits session depth
| - Aggressive ad-load triggers high churn
- Post-update stability issues erode trust
- No paid ad-free tier
| - Aggressive mid-game ad interruptions
- High $18 ad-removal price point
- Lack of Dark Mode for night-time play
|
| Pricing | freemium | freemium | freemium | freemium | freemium | freemium | freemium |
| Momentum | Intense | - | Active | Maintenance | Maintenance | Active | Maintenance |
| Update Cadence | 5 versions | - | 5 versions | 2 versions, ~7d avg | 5 versions, 4 majors/6mo, ~313d avg | 5 versions, ~10d avg | 2 versions, ~29d avg |
