The app
The water log for aquariums, reefs, ponds and vivariums
Log your test kit in ten minutes. Every reading is checked against the right range for your tank as you type — then charted, trended and forecast, so you see the drift days before it costs a fish.
One email when Frondsmith is on the App Store. Nothing else — no list, no newsletter.
Type a reading and it is checked against the range for your kind of tank — freshwater, planted, reef, brackish, pond or vivarium. Out of range, it says what to do.
Every parameter gets a trend line and a forecast: "nitrate out of range in ~7 days" — while there is still time to act.
A new tank's ammonia and nitrite are tracked until two clean tests in a row. No more squinting at colour cards.
Drag a percentage and see where each reading lands before the bucket comes out.
One reminder when a test or water change is due, at the hour you pick. Widgets show your most urgent tank at a glance.
Your tanks, readings and notes stay on your iPhone. Frondsmith never sends them anywhere. Free covers two tanks and the last 30 days of charts, for good; Pro adds unlimited tanks, full history, your own ranges, custom reminders and CSV export.