Water chemistry, cycling, stocking and fish health — worked out for your tank specifically, and kept entirely on your phone.
Every number is judged against your tank type and your actual stock, not a generic chart. Trends project forward: “nitrate reaches 40 ppm on Thursday at this rate.”
Reads your own ammonia, nitrite and nitrate history and tells you exactly which stage of the nitrogen cycle you are in, what to do next, and why it has stalled.
Bioload, footprint, group minimums, temperament and the shared parameter window across every resident — each conflict comes with the reason and the fix.
A curated library of diseases, algae types and plant deficiencies with a symptom matcher that works with no connection. An optional AI assistant reads photos when you want a second opinion.
Works with no account at all. Your tanks, readings, photos and notes live on your device and export in one tap — sign in only if you want an encrypted backup and sync.
Questions, bugs or a species you want added: chochoapps@gmail.com. Include your tank type and what you were doing — it makes a fix far faster.