Aquarium: Living Logic
Water Puzzle, No Guessing
Free
Set the water levels from row and column clues. Solve 90 puzzles and a daily tank, then watch your finished aquarium come alive.
Aquarium: Living Logic is a water-based grid puzzle. Set the water level in each tank to solve the board. Water fills from the bottom and stays level across each tank. The numbers beside the rows and columns tell you how many cells must hold water.
Aquarium: Living Logic has 90 puzzles in nine chapters, from small warm-ups to 8 × 8 boards. Every puzzle has one solution you can reach from the clues. Later chapters introduce stepped tanks, narrow passages, and clues that connect several tanks.
A short interactive tutorial shows you how to play. Hints explain where to look and why a deduction works before you choose to apply it. Undo and redo let you change course.
Play a daily puzzle that changes at midnight UTC. Each finished board becomes an aquarium with fish and plants. Keep it in your collection, mark it as a favorite, share an image, or replay the puzzle. Finish chapters to unlock garden, moonlit, and reef styles.
Play offline on iPhone and iPad. Every chapter is free, with no ads, purchases, or subscriptions. There is no timer. Water sounds and haptics are optional, and a Still water setting pauses the animation.
Aquarium supports light and dark appearance, larger text, VoiceOver controls, Reduce Motion, and Increase Contrast.
Ratings & Reviews
- Adds 30 puzzles in three new chapters, bringing the collection to 90 puzzles.
- Adds new daily puzzles while preserving earlier puzzles and saved progress.
- Unlock new aquarium styles as you finish chapters.
- Mark finished aquariums as favorites and replay their puzzles.
- Improves water animation, clue visibility, and board layouts on iPhone and iPad.
The developer, Neeraj Aggarwal, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Neeraj Aggarwal
- Size
- 8.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Augustus Works