โ Gentian Works 
AquaStable
Aquarium water quality โ recorded simply.
An app for easily logging parameters like pH, nitrate, and KH. Works for freshwater and saltwater alike. As your data accumulates, tracking changes in your tank's condition becomes effortless.
Screenshots
Features
Dashboard
See your latest readings at a glance. View all your tanks in one place.
Log Entries
Quickly add and edit water quality parameters. Past records are always within easy reach.
Calculation Tools
Assists with dosing calculations and more. Let the app handle the math. Pro feature.
Parameter Guide
Look up the meaning and ideal ranges for pH, nitrate, KH, and more โ anytime.
Freshwater & Saltwater
Supports freshwater, saltwater, brackish, and more โ whatever your tank style.
Custom Parameters
Add your own measurement items. Tailor the app to your exact setup. Pro feature.
Free & Pro
Free
- Dashboard & graphs
- Water quality log (up to 30 entries)
- Standard parameters (temp, pH, NOโ, NOโ, KH, etc.)
- Customizable parameter display
- NOโ dilution calc, volume calc, water change simulation
- Parameter guide
- Memo notes
Pro
Pro
- Everything in Free
- Unlimited tanks
- Unlimited log entries
- Custom measurement parameters
- KH & Ca dosing calculations
- Salinity top-off (evaporation) calculations
- Calculation history (100 entries)
- Date filter for logs