ReefFlow: Reef Tank Tracker

ReefFlow is the Local-First companion for serious aquarium keepers — saltwater and freshwater. Log your parameters in seconds and get smart, rule-based warnings before a crash — not AI gimmicks. Everything lives on your phone; your data is yours forever.

• Track saltwater (Alk/Ca/Mg…) and freshwater (GH/CO2/TDS…) parameters with trend charts
• Smart alerts: Alk swings, low Ca, salinity jumps (ATO faults), rising nutrients
• Step-by-step cycling guide for new tanks (live rock / dry rock)
• Two-Part dosing calculator
• Maintenance reminders, livestock profiles, unlimited diary
• Full JSON/CSV export — no lock-in
• 5 languages, light/dark themes
• One-time $9.99 Pro — no subscription, no annual cloud fee

Your tank. Your data. ReefFlow.