AquaStable
Aquarium water quality — recorded simply.
An app for easily logging parameters like pH, nitrate, and KH. Scan your test strip with the camera to fill in readings automatically. 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, with trend arrows (↑↓) since your last reading and range bars that show whether your water is in the safe zone.
Visualize Trends
See your records as charts. Tap a point for details, long-press to edit, and swipe to switch parameters.
Test Strip Scan
Just snap a photo of your test strip — the app reads each pad's color into values automatically. Auto pad detection, auto-shutter when steady, lighting warnings, and a 60-second development timer assist every capture.
Learning Calibration
Learns the gap between detected and recorded values and corrects for it. Compare results against reference colors and fix them in one tap — it gets more accurate the more you use it.
Log Entries
Quickly add and edit water quality parameters. Past records are always within easy reach.
Multiple Tanks
Record and manage each of your tanks separately. Switch your main tank in one tap with ★.
Calculation Tools
Let the app handle the math. Water change, volume, and NO₃ dilution are free; KH/Ca dosing and salinity are Pro only.
Freshwater & Saltwater
Optimized presets for freshwater and saltwater. Customize the parameters to fit brackish and other setups too.
Custom Parameters
Add your own measurement items. Tailor the app to your exact setup.
Backup & Restore
Export all your data to a single file and save it to Google Drive or anywhere. Restore everything when you switch phones.
Free & Pro
Free
- Dashboard & graphs
- Water quality log (up to 30 entries)
- Standard parameters (temp, pH, NO₂, NO₃, KH, etc.)
- Customizable parameter display
- NO₃ dilution calc, volume calc, water change simulation
- Parameter guide
- Memo notes
Pro
- Everything in Free
- Test strip scan (with learning calibration)
- 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
- Backup & Restore