Tidal — Reef Tank Tracker

Jay Zisch

In-app purchases

About this app

Tidal Reef is the simplest way to keep your reef aquarium thriving. Log water chemistry readings, track water changes, and spot trends before they become problems — all stored privately on your device.

PARAMETER TRACKING
• Log salinity, pH, alkalinity, calcium, magnesium, temperature, nitrate, phosphate, and any custom parameter you add
• Color-coded in-range / out-of-range indicators at a glance
• Compare your latest reading against your previous one to see the direction things are heading

CHARTS & HISTORY
• Smooth line charts with your target range shaded in — instantly see when a parameter drifted
• Water change markers overlaid on parameter charts so you can spot cause and effect
• Searchable, filterable history list grouped by month
• Calendar view to see which days you tested

WATER CHANGES
• Log water change volume (%) and optional notes like salt brand or dosing additions
• Dot chart showing your water change frequency over time
• Summary card on the dashboard shows your last change and recent count

DESIGNED FOR REEFERS
• Works completely offline — your data never leaves your device
• Light, dark, and system-adaptive themes
• Celsius or Fahrenheit temperature display
• Optional testing reminder notification so you never miss a scheduled test day
• Full backup and restore via a portable JSON file

Whether you're keeping a simple FOWLR or a demanding SPS reef, Tidal Reef gives you the clarity to act before small shifts become big problems.

What’s new

What's New

Welcome to Tidal — the reef aquarium tracker built for serious hobbyists.

- Log water chemistry readings and track trends over time
- Get instant health status for every parameter (in range, low, or high)
- View your history with a filterable log and calendar
- Works fully offline — your data stays on your device

Start tracking your reef today.