Jellyfish Tank is a games app developed by KOICHI HANAMURA.
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App Information
Jellyfish Tank is freely available from the App Store. The app size is 2.80 MB. The latest version available is 1.4. The last update was on September 18, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since August 2026.
Jellyfish Tank is made and published by
KOICHI HANAMURA.
AppBrain is an independent app data site and isn't affiliated with KOICHI HANAMURA.
The app name, icon, screenshots and description belong to KOICHI HANAMURA and are shown as published on the App Store.
Description by KOICHI HANAMURA(from the App Store)
A small, quiet aquarium that lives in your pocket.
Jellyfish drift, glow, and pulse in the dark water. You can simply watch — the tank asks nothing of you.
When you feel like it, care for them: scatter food, clean the water, give them light. Pair two jellies and an egg settles on the rocks. You won't know its color until it grows.
The colors follow an old lexicon — Dew, Madder, Cerulean, Amber, Jade, Coral, Lapis, Aster, Aurora. And on moonless nights, once in a great while, something else.
- No ads in the tank. Watching is never interrupted. - No subscriptions. No random paid draws. - Time passes gently even while you're away. - Your tank follows you to a new device through iCloud.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
