Aquabook: Aquarium & Reef Log

See where your water is heading before your tank feels it. Log a whole round of tests on one screen, watch every parameter trend against its target range, and know what is due today: the water change, the dose, the filter clean. Reef or freshwater, one app. No account. No ads. Your readings stay on your phone. A ROUND OF TESTS ON ONE SCREEN • Every parameter your tank tracks is listed on one page, with the last value and the target range right next to the field. Next on the keypad moves you down the list. • Same as last when nothing changed. A value that lands out of range shows it the moment you type it. • Each value saves as you enter it, so a phone call in the middle of a reef test loses nothing. • Backdate a test you wrote on paper, add a note, edit or delete it later. REEF AND FRESHWATER IN THE SAME APP • Freshwater, planted, reef, saltwater fish-only, brackish or your own setup, each with its own default parameters and target ranges. Edit any of them per tank. • Sixteen parameters ready to go: temperature, pH, ammonia, nitrite, nitrate, phosphate, GH, KH, salinity, calcium, magnesium, CO2, iron, potassium, TDS and ORP. Add your own for anything else. • Units the way your test kit reads them: dKH, meq/L or ppm for alkalinity; SG or ppt for salinity; ppm or ppb for phosphate; °C or °F; liters, US or UK gallons. Switch any time and old charts stay right. • Planted tank with CO2 injection? CO2 is estimated from pH and KH on every test, clearly marked as an estimate. TRENDS YOU CAN READ AT A GLANCE • Each tank card shows four pinned parameters with their latest values, how long since the last test, and the next job due. • Full charts with the target band shaded, water changes and doses marked on the timeline, and min, max and average for the range you are looking at. • Seven days to all time, one line per parameter, with no clutter. NEVER MISS A WATER CHANGE • Water change, dose, filter clean, test, or anything you name. Repeat every few days, on chosen weekdays, every few weeks or on a day of the month, counted from the last time you did it or on a fixed schedule. • Today shows what is overdue, due today and due this week across all your tanks. Done in one tap, Skip when you mean it, Undo if you tapped too soon. • A reminder at the time you choose, with Done right on the notification. • Water changes are logged in percent, liters or gallons; doses with the amount you actually added. DOSE TO YOUR OWN FORMULA • Enter the formula from the bottle: how much one dose raises a parameter in a given volume. The app does the math for your tank's volume. • Reach a target, or see what a given dose will do. If the label says to go slowly, the plan is split across days. • Log the dose and it shows up on the chart, so you can see what it did. LIVESTOCK AND PHOTOS • Fish, corals, invertebrates and plants, with the species written the way you call it, counts, the date added and where it came from. • Photos over time for each inhabitant and for the tank itself. Move an inhabitant to another tank and its photos go with it. • Archive a tank you have taken down and keep its history. YOUR DATA, YOUR FILES • No account, no sign-in, no server. Works at the tank with no signal. • Automatic backups on your phone, plus Save a copy to keep a ZIP wherever you like and restore it on a new phone. • CSV export of every test for your spreadsheet. A PDF report with charts, tasks, doses and livestock for the range you choose. • Home screen widgets with the latest readings and the next job for the tank you pick.