Unlimited free logging, free reminders — and free CSV import to bring years of history in from a spreadsheet or another app. Anti-swing alerts warn you the instant a value leaves its safe band.
The moment you save, Stablereef compares the change to a tunable safe band and flags rapid swings or out-of-range values.
Pinned parameters, last value pre-filled, a big number pad. Log right next to the tank.
7 / 30 / 90-day charts with the recommended stable range shaded in.
Free CSV import — Google Sheets or another app's export. Column mapping, unit conversion, preview before anything is written.
Free CSV / JSON export and automatic local backups. No paywall on your own data.
No account. No cloud. No ads.
Everything you enter stays on your device — we have no servers that receive your aquarium data. The only thing the App sends is anonymous usage counts (no personal data, no IP), and you can switch that off in Settings.