About

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.