friends-aquarium.app

What It Is

ともだち水槽 is a Japanese iOS AI casual game whose core hook is “bringing photos to life.” Users cut out a subject—such as a person, pet, or illustration—from an existing photo or a newly taken one, then import it into a digital aquarium. The AI learns swimming movements based on the subject’s shape and features, creating a unique swimming style. It feels more like a blend of photo-based creation, nurturing/observation, and light competition than a general-purpose AI tool.

AI Capabilities and Core Gameplay

According to the website, the AI learns to swim through trial and error. Users can watch its growth process and also “modify the AI” by adjusting parameters such as strength, flexibility, and movement timing. The app also supports changing backgrounds, choosing food, resizing parts of the photo, and customizing aquarium themes. Typical use cases include turning pet photos, pictures of friends, or original illustrations into AI creatures in water, observing their behavior and sharing them with friends, or competing against swimmers developed by other players. It is worth noting that the page does not disclose the specific model used, the algorithm source, or whether processing runs locally or relies on cloud-based training.

Pricing, Chinese Support, and Integrations

The captured page text does not provide information on pricing, in-app purchases, subscriptions, or free usage allowances, so long-term usage costs cannot be assessed. In terms of integrations, it mainly relies on the iOS Photos app’s share menu: users use the standard iPhone cutout feature and then import the subject into ともだち水槽 via the share option. The page does not show information about Android, Web, API, or third-party platform integrations, nor does it disclose whether a Chinese interface or Chinese-language customer support is available.

Pros, Cons, and Limitations

Its strengths are a clear creative concept, a low barrier to turning photos into AI creatures, and an AI learning process that is visually entertaining and shareable. It may appeal to illustrators, pet owners, and casual gamers. The main limitation is its strong dependence on the iOS ecosystem: the cutout feature requires an iPhone released after September 2018 and iOS 16 or later. Older devices require users to first create a transparent PNG and then import it through a multi-step sharing process, which is noticeably more complicated. On data privacy, the page does not explain how photos are stored, whether they are uploaded, or whether they are used for training; it only reminds users to pay attention to rights issues when livestreaming or using photographed subjects.

Who It’s For and Access from China

It is suitable for iPhone users who enjoy photo-based play, virtual pets, AI nurturing mechanics, and content sharing. It may also suit creators who want to turn original characters into dynamic displays. It is not suitable for teams that need serious AI animation production, batch processing, API access, or a clearly defined commercial licensing workflow. The page does not disclose availability for access, download, or payment from mainland China. If App Store region, network, or payment restrictions apply, users may consider photo animation tools, desktop pet apps, or pet-raising mobile games as alternatives.