Fish Tank Tracker vs ReefDrift

Fish Tank Tracker is the lab notebook your aquarium deserves: log a full water test in seconds, watch the trends, and never miss another water change. Built for reef, FOWLR, saltwater, freshwater and brackish tanks — and built to work entirely offline, with no account and no subscription. TEN PARAMETERS, LOGGED IN SECONDS - Temperature, salinity (ppt or specific gravity), pH, ammonia, nitrite, nitrate, alkalinity, calcium, magnesium and phosphate - Quick mode for the everyday basics, Full Test for lab day - Optimal ranges and your last reading shown while you type, notes on every test - A reading that looks like a typo (42 for 420) is questioned before it's saved - Type phosphorus in ppb straight from a Hanna ULR checker - Type alkalinity in dKH, meq/L or ppm, as your test kit reads it - Set your own target range for any parameter, tank by tank - Log a test you took yesterday, or fix one you mistyped - Share any test as text, for a second opinion on the forums CHARTS THAT TELL THE STORY - Every parameter charted against its optimal band, over 30 days, 90 days, a year or all time - Tap a chart for any reading, with your water changes marked on it - Color-coded status on the dashboard: optimal, acceptable or critical at a glance - Every reading shows how it moved since your last test - Spot a slow drift weeks before it becomes a problem LIVESTOCK JOURNAL - Fish, corals and invertebrates with species names and photos - Purchase dates, quantity, cost and health status EQUIPMENT & MAINTENANCE - An inventory of lights, pumps, heaters, skimmers and more - Recurring tasks per piece of equipment: clean the skimmer cup, swap filter floss, wipe the lens - A reminder notification when a task comes due, plus a weekly test-day reminder on the day and time you choose WATER CHANGES & DOSING - Log water changes by percent or volume, even from earlier days, and fix them later - Dosing calculator for alkalinity, calcium and magnesium — pick your product, get millilitres for your exact water volume - Big corrections are split into daily doses, never faster than the product's label allows - Dose straight from a test: the calculator starts from your latest reading and your own target - Water change calculator: how much salt to mix, and how far nitrate and phosphate will drop YOURS, OFFLINE - Everything is stored in a local database on your device - Free backup and restore: save everything to Files or Drive, and move it to a new phone - No account, no login, no cloud, no tracking — and no ads - Gallons or liters for each tank, °F or °C FREE AND PRO The free version is a complete toolkit for one tank: all ten parameters with charts, a month of history, five livestock entries, and every equipment, maintenance and dosing tool. Pro is a single one-time purchase — never a subscription — and unlocks unlimited tanks, unlimited history, unlimited livestock, trend analysis with stability scores, and CSV export. Whether you are cycling your first ten-gallon or dialing in a mature reef, Fish Tank Tracker keeps the numbers so you can enjoy the fish. Privacy policy: https://fish.chinesepowered.com/privacy.html

Log every reef parameter in seconds. ReefDrift calculates a Tank Stability Score — Stable, Watch, or Danger — the instant you save a reading. Catch a 0.3 dKH swing before it costs $500 in coral. No account. No cloud. Just your tank data, on your device. LOG THE BIG THREE AND EVERYTHING ELSE Alkalinity (dKH), Calcium, Magnesium — the parameters reef keepers obsess over. Plus Nitrate, Phosphate, pH, Salinity, Temperature, Ammonia, and Nitrite. Last values pre-fill automatically so a full test set takes under ten seconds, not one screen per parameter. TANK STABILITY SCORE ReefDrift calculates a Stable, Watch, or Danger score the instant you save a reading. The score weights every parameter against your target band and flags drift between sessions. A single alk swing from 8.4 to 7.1 dKH registers as Danger before you wonder why a frag is pale. Out-of-range chips light up on the dashboard immediately — no digging, no scrolling. DOSING CALCULATOR — WIRED TO YOUR TANK BRS 2-part, ESV B-Ionic, Red Sea Foundation, Aquaforest KH Coralline, and custom products. Enter tank volume and current reading; ReefDrift gives you the exact dose to hit your target. Works for alk, cal, mag, NO3, and PO4. The math uses your real tank volume, not a generic estimate. TREND CHARTS WITH TARGET-RANGE BANDS Every reading plotted on a line chart with your target band overlaid. See whether alkalinity is riding the top of the band, drifting toward the floor, or cycling after a large dose. Adjust the time window from 7 days to 12 months. MAINTENANCE LOG Record water changes, GFO swaps, ATO top-offs, carbon additions, and frag-tank moves. Cross-reference maintenance events against parameter charts to see what actually moved the needle. TEST REMINDERS Set a reminder per parameter or per task. ReefDrift sends a local notification on schedule — no server required. Never miss a Friday alk test again. HOME SCREEN WIDGET Your last three parameters and next task on your iPhone home screen or lock screen. See your tank status without opening the app. BUILT BY REEF HOBBYISTS We run SPS-dominant systems. We have watched a two-week alk drift destroy a $2,000 Acropora collection. We built ReefDrift because every existing option was either abandoned, clunky, cloud-first, or a bloated social network with a parameter logger bolted on. ReefDrift is ruthlessly focused: fast log, honest score, useful calculator. Nothing else. PRIVACY — YOUR DATA STAYS ON YOUR DEVICE No account. No cloud. No login. All readings are stored locally on your iPhone and never leave your device unless you export them as CSV. Nothing to hack, nothing to lose in a server outage. ReefDrift Pro: Monthly $3.99 · Yearly $19.99 (save 58%) · Lifetime $59.99 — unlimited tanks, no ads, home screen widget, advanced charts, dosing correlation, and PDF reports. Supports: dKH, meq/L, ppm · SG, ppt · °C, °F Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lid-web-privacy.web.app/reefdrift-privacy-policy-ios.html