| Core Identity |
| Developer | GrassGames | Easybrain Ltd | Tripledot Studios | Supertreat | Playrix | MobilityWare | Yang Li | BELKA GAMES | Wood Puzzle Sudoku Games | TapBrain |
| Category | Games | Games | Games | Games | Games | Games | Games | Card | Card | Games |
| Platform | Android, iOS | iOS, Android | iOS, Android | Android, iOS | iOS, Android | iOS, Android | iOS, Android | Android | Android, iOS | iOS |
| Store Metrics |
| Rating | 4.6 / 5 | 4.5 / 5 | 4.6 / 5 | 4.8 / 5 | 4.9 / 5 | 4.8 / 5 | 4.0 / 5 | 4.5 / 5 | 4.9 / 5 | 4.8 / 5 |
| Ratings Count | 466 | 37,513 | 14,718 | 477,547 | 28,771 | 39,928 | 417 | 199,657 | 4,961 | 53 |
| Price | Free | Free | Free | Free | Free | $4.99 | Free | Free | Free | Free |
| Release Date | Oct 29, 2020 | Aug 4, 2022 | Aug 11, 2021 | Jun 21, 2017 | Nov 14, 2022 | Sep 23, 2010 | Aug 21, 2021 | Sep 22, 2020 | May 21, 2021 | Dec 30, 2025 |
| Last Updated | Jan 15, 2025 | Feb 10, 2026 | Apr 15, 2026 | Apr 9, 2026 | Aug 21, 2025 | Jul 23, 2020 | Mar 15, 2023 | Dec 29, 2025 | May 28, 2024 | Mar 17, 2026 |
| Sentiment & Reviews |
| Sentiment | negative | mixed | mixed | mixed | positive | mixed | - | mixed | - | - |
| Score | 35/100 | 42/100 | 55/100 | 53/100 | 68/100 | 45/100 | - | 55/100 | - | - |
| Praises | - Relaxing visual aesthetics and fish collection mechanics provide a calming experience for casual players
| - Engaging Gameplay
- Relaxing Experience
| - Core spider solitaire mechanics provide a relaxing and mentally stimulating experience for long-term players
- Visual customization options like background themes and card patterns enhance the aesthetic appeal of play
| - Engaging Gameplay
- Mental Stimulation
| - Engaging Gameplay
- Relaxing Atmosphere
| - Relaxing Gameplay
- Daily Challenges
| - | - Core solitaire gameplay provides a relaxing and enjoyable experience for long-term players
| - | - |
| Complaints | - Aggressive ad frequency interrupts gameplay flow and forces users to restart the application entirely
- Frequent application freezes and crashes result in total loss of game progress and rewards
| - Excessive Advertising
- Unreasonable Pricing
| - Aggressive and intrusive advertisement placements disrupt the flow of gameplay and frustrate active users
- Technical performance issues including device overheating and battery drain degrade the mobile experience
| - Aggressive Monetization
- Technical Ad Issues
| - Aggressive Monetization
- Technical Issues and Data Loss
| - Aggressive/Intrusive Ads
- App Stability and Crashes
| - | - Excessive advertisement frequency post-update disrupts the flow of the core gameplay loop
| - | - |
| Requests | - Increased card size options would improve accessibility for users with visual impairments or age-related needs
| - | - Monetization option to purchase an ad-free experience for uninterrupted and continuous gameplay sessions
| - | - | - | - | - Improved responsiveness from the support team regarding account access and technical issues
| - | - |
| Strategic Intel |
| Strengths | - Aquarium-themed meta-layer provides a visual hook that differentiates the experience from standard card-only apps.
| - Modern meta-progression (Seasonal Events/Postcards)
- Clean, minimalist UI design
- Accessibility features (Left-Hand Mode)
| - Offline-first architecture enables play in low-connectivity environments
- Minimalist design reduces cognitive load for casual users
- Multi-suit scaling accommodates diverse skill levels
| - Exclusive IP integrations (Popeye) driving seasonal interest
- Tangible 'idle' harvest loop rewarding return sessions
- Strong brand recognition with over 2.6M total ratings
| - Strong brand recognition via Fishdom IP
- High visual polish and interactive character personality
- Unique hybrid of solitaire and deep pet simulation
| - Strong brand legacy as the 'Original' maker
- High engagement via Daily Challenges and trophies
- Accessibility features like left-handed mode
| - | - Offline-first architecture preserves ad-inventory in low-connectivity markets
- 25-venue progression provides clear long-term goals for casual players
| - | - |
| Weaknesses | - Technical instability causes progress loss during crashes.
- Aggressive ad frequency interrupts core gameplay flow.
| - Aggressive ad frequency (every 30-120 seconds)
- High price point for ad removal ($16)
- Lack of landscape mode support
| - Lack of ad-free paid tier drives negative sentiment
- Device performance issues correlate with ad-load
- Limited accessibility features restrict older demographics
| - Aggressive coin-sink at high levels causing 'pay-to-win' perception
- Technical instability in the ad-reward system (freezing)
- Lack of social 'Clubs' or collaborative features
| - Aggressive monetization perception ("scam" complaints)
- Technical instability regarding currency and progress loss
- Limited thematic variety (strictly underwater)
| - Outdated iOS version (last updated 2020)
- Intrusive ad experience on Android
- Update regressions causing loss of player progress
| - | - 0.7★ rating gap on Android vs iOS
- High-frequency ad complaints post-update
- Aggressive monetization forces perceived pay-to-win progression
| - | - |
| Pricing | subscription | freemium | free | freemium | freemium | freemium | free | freemium | freemium | free |
| Momentum | Zombie | - | Maintenance | Maintenance | - | - | Active | Zombie | Active | Active |
| Update Cadence | 5 versions | - | 5 versions, ~14d avg | 2 versions, ~1d avg | - | - | 4 versions | 1 versions | 5 versions | 5 versions |
