Tankwell: Water Change Timer

About this app

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. WHY TANKWELL • One-tap logging — no forms, no friction • Fully offline — your tank data never leaves your phone • No account, no sign-in, no ads • Built for aquarists managing multiple tanks at once INCLUDED • Track up to 2 tanks with water-change reminders • One-tap logging with automatic countdown reset • Local notifications so you never forget • Full change history per tank TANKWELL PRO (one-time purchase) • Unlimited tanks • Filter change, water test, and fertilizer dosing reminders • Custom reminder time per task • Export full history as CSV 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.

Fixed minor issues and improved overall stability.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 15, 2026 · 1:53 PM Free