ReefCompanion vs ReefDrift

ReefCompanion makes it easy to track, understand, and care for your reef aquarium. Log water tests, monitor trends, manage equipment, and stay on top of maintenance—all in one clean, intuitive app designed for reef keepers of every experience level. Whether you’re maintaining a nano reef or a full mixed‑reef system, ReefCompanion helps you keep your tank stable, organized, and thriving. Key Features • Fast, simple water test logging Record Calcium, Alkalinity, Magnesium, Nitrate, Phosphate, Salinity, and more. Add notes and photos to track changes over time. • Beautiful trend charts Visualize your tank’s stability with 7‑day, 30‑day, 90‑day, and all‑time graphs. Spot patterns early and make informed adjustments. • Equipment tracking Keep a clean list of pumps, lights, skimmers, controllers, and other gear. Perfect for maintenance planning and upgrade tracking. • Maintenance reminders Set recurring tasks like carbon changes, skimmer cleaning, filter swaps, and more. Never forget an important job again. • Livestock organization Track fish, corals, and inverts with notes and photos. Keep a history of additions, removals, and observations. • Clean, modern design Built for clarity and speed. No clutter, no ads, no accounts required. Why ReefCompanion? A healthy reef depends on consistency. ReefCompanion brings your tank’s data together so you can make better decisions, catch issues early, and enjoy the hobby with confidence. Everything is stored privately on your device. No logins, no cloud accounts—just your reef, your data.

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