Reef Stability: Dosing Tracker

Reef Stability turns your own test results into the two things every reef keeper actually needs: how much to dose, and when to leave the tank alone.

Log your alkalinity, calcium, magnesium and nutrients, and Reef Stability learns how fast your tank uses each one. Then it works out the daily dose to hold it steady — from your data, not a generic chart. When a wobble is just test-kit noise, it says so, instead of sending you chasing a number.

WHAT IT DOES
- Know what to change — a daily dose from your own tank's measured uptake
- Stability first — it tells you when to do nothing
- Every parameter on one clean screen: alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, pH
- Trends that filter out test-kit scatter, so you see real drift
- Safe by design — dose changes stay within reef-safe daily limits, with extra caution for SPS
- Honest by design — sourced chemistry, and it never invents a number it can't stand behind
- Your data is yours — full history and CSV export, free, forever
- No account, no sign-up — your logs stay on your device

FREE
Log, track and export everything — free, with no time limit.

REEF STABILITY PREMIUM
Unlocks the dose recommendations, supplement forecasting and cross-parameter interpretation. Available monthly, annually, or as a one-time lifetime purchase.

Stability over chasing numbers.

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Terms of Use: https://reefstability.com/terms

Subscriptions are billed to your Apple ID. An auto-renewing subscription renews unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings. A lifetime purchase is a one-time payment.