The offline reef aquarium companion
Log your water tests in seconds and see at a glance whether every value is healthy – color-coded safe ranges, history graphs, trends and early warnings, dosing tools, maintenance reminders and safe backups. Everything stays on your device: no account, no cloud requirement, no ads.
iOS version coming soon to the App Store.
Built by a reef keeper, for reef keepers – from the daily alkalinity test to the yearly membrane change.
All core reef parameters with color-coded safe ranges you can tune per tank. Batch entry, test sets for your routines, and typo protection so a slipped decimal never wrecks your data.
A weighted 0–100 health score with a per-parameter breakdown, plus a stability score and prioritized plain-language insights PRO – computed entirely on your device.
Zoomable history graphs with your safe range shaded behind the data, trend detection, and forecasts that warn you before a drifting value leaves its range.
A supplement plan built on a catalog of reef brands, full dosing history, and calculators PRO that turn your readings into a recommended daily dose or a safe correction plan.
Water changes, media changes and cleanings in one log, an elastic maintenance schedule that never stacks phantom overdue warnings, RO/DI filter life tracking, and opt-in notifications.
The full 33-element trace panel with seawater-anchored ranges, custom element views, and one-step import of Fauna Marin and ATI ICP reports PRO.
Import your Hanna Lab test history, run measurements live over Bluetooth, or scan a pocket checker's display with your camera – no typing PRO.
One-file backups shared anywhere, automatic local backups, optional Google Drive sync PRO, CSV export, and an "Ask your AI" summary you can paste into any AI chat.
ReefTracker is 100 % offline. No account, no sign-up, no tracking, no ads. Your readings live on your device and leave it only when you export or back them up. Read the privacy policy – it's short.
Free to use with up to two aquariums – Pro adds unlimited tanks and the power features marked above. See the full feature list for everything the app can do.
