Tankwell

Tankwell is a fast, fully offline aquarium water change reminder for anyone keeping one tank or a whole fish room. No accounts, no cloud sync, no clutter — just a clean list of your tanks and exactly when each one needs attention. Most tank-tracking apps bury the one thing you actually open them for — "is it time yet?" — under logs, journals, and social feeds. Tankwell strips that away: add a tank in two taps, set a water-change interval, and get a local reminder when it's due. Logging a completed change takes one tap and instantly resets the countdown. — WHAT MAKES TANKWELL DIFFERENT — • One-tap logging — no forms, no friction. Logging a completed water change takes one tap and instantly resets the countdown. • Fully offline. Your tank data never leaves your phone — no accounts, no cloud sync, no ads. • Built for multiple tanks. Track every tank from one clean dashboard, with local notifications so you never miss a change. • Full history per tank. Every water change is logged so you can see the pattern over time. — PRICING — Tankwell is free, with no account required. The free version tracks up to 2 tanks with one-tap logging, local notifications, and full change history. Tankwell Pro is a one-time purchase that unlocks unlimited tanks, filter change/water test/fertilizer dosing reminders, a custom reminder time per task, and CSV export of your full history. — FEEDBACK — Made by a small indie team. Email obeliskclubclub@gmail.com with feedback, bug reports, or feature requests. Whether you run a single betta bowl or a fish room full of reef and cichlid tanks, Tankwell keeps every water change on schedule without ever asking for your data.