ReefLog: Water Parameters

Your reef tank's chemistry tells a story. ReefLog helps you read it. Track alkalinity, calcium, magnesium, and 10 more parameters with beautiful trend graphs, target range indicators, and instant status dashboards. Built exclusively for saltwater reef aquariums -- not freshwater, not ponds, not general "aquarium management." No subscription. No account required. No ads. Pay once, own it forever. --- LOG WATER TESTS IN SECONDS --- Tap, enter your numbers, done. ReefLog is designed for speed because you're logging parameters at your tank, not sitting at a desk. Every parameter a reef keeper tracks is built in with the correct units: - Alkalinity (dKH, meq/L, ppm CaCO3) - Calcium (ppm) - Magnesium (ppm) - Salinity (ppt, SG, PSU) - pH - Temperature (F / C) - Nitrate (ppm) - Phosphate (ppm, ppb) - Ammonia, Nitrite, Potassium, Strontium, Iodine --- SEE TRENDS BEFORE PROBLEMS START --- Beautiful trend graphs show your parameter history with ideal target ranges highlighted. See at a glance whether your alkalinity is drifting, whether your calcium consumption is increasing, or whether that new dosing schedule is actually working. Compare multiple parameters on a single chart to spot correlations. Spot problems before your coral does. --- DASHBOARD WITH STATUS AT A GLANCE --- Every parameter displays a color-coded status indicator -- green when in range, yellow when drifting, red when out of range. Mini sparkline graphs on every card show recent trends without opening a single chart. Know your tank's health the moment you open the app. --- TRACK EVERY TANK YOU RUN --- Display tank, frag tank, quarantine tank -- each one gets its own dashboard, its own history, its own target ranges, its own trend lines. Support for up to 10 tanks. Switch between them instantly with a single tap. --- YOUR DATA, YOUR DEVICE --- No account required. No login screens. No server dependency. Your data lives on your device. You will never lose years of parameter history because of a server outage or a broken password reset. Export to CSV anytime -- your data is always yours. Perfect for hobbyists who also maintain spreadsheets or want to run their own analysis. --- BUILT BY A REEFER, FOR REEFERS --- ReefLog speaks your language. Alk in dKH or meq/L. Calcium in ppm. Salinity in ppt or specific gravity. Target ranges based on proven reef chemistry, not generic aquarium values. Customizable ranges per tank because your SPS-dominant display has different targets than your quarantine tank. Set test reminders so you never miss a weekly alk check. Dark mode that looks great at 11pm when you're doing your evening tank check. --- WHAT MAKES REEFLOG DIFFERENT --- - Reef-specific from day one (not a general aquarium app) - Modern, native iOS design (not a 2012 UI) - Local-first data storage (no account, no data loss) - Focused on parameters (does one thing exceptionally well) - One-time purchase (no subscription fatigue) - Active developer who actually responds to feedback --- DESIGNED FOR SERIOUS REEF KEEPERS --- If you're testing alk, calcium, and magnesium every week -- and then writing the numbers on a sticky note or burying them in a spreadsheet -- you already know you need a better system. ReefLog is the tool you've been looking for. One-time purchase. No subscription. No ads. No account required. Your reef deserves better than a spreadsheet.