Blubb Pixel Fish Tank
An aquarium on your wrist
$0.99 · Designed for iPhone. Not verified for macOS.
Pixel fish swimming right below the time: feed them, clean the glass, unlock new species. At Christmas the tank gets decorated too.
A tiny aquarium lives on your Apple Watch face. The fish really swim, right below the time, in a tank that follows the day: shafts of light in the morning, the sunset, and at night they sleep near the bottom.
Blubb is a pixel-art aquarium you look after in a few seconds a day.
• Feed them when they are hungry: you will see them gulping at the surface.
• Clean the glass when algae grow, before the water turns murky.
• Play "Feeding time": turn the Digital Crown to move the fish under the falling flakes.
• Care given at the right moment raises the tank's level: guppies, corydoras, angelfish, bettas and pufferfish arrive, with decorations like a castle, a treasure chest, a diver and a shipwreck.
• Compose the tank on iPhone: up to five fish, their colors and the centerpiece.
• Twice a day a surprise: a seahorse, a jellyfish, the chest opening, a crab out for a stroll.
• Holidays in the tank: Halloween, Christmas, New Year, Carnival, Valentine's Day, Easter and your aquarium's birthday.
• Retro animation at 1 to 4 frames per second, your choice.
• If you are away, they wait for you: no fish ever gets sick or dies.
No account, no ads, no subscription, no extra purchases. Your data stays on your devices.
Requires Apple Watch with watchOS 10 or later and iPhone with iOS 17 or later. Blubb adds a complication to existing faces (for example Modular, Modular Duo and the Smart Stack); it is not a watch face. With your wrist down or Reduce Motion on, the Watch shows a still image.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Luca Mattiazzi, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Luca Mattiazzi
- Size
- 2.9 MB
- Category
- Simulation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 5 more
- English, French, German, Italian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Luca Mattiazzi
