About this app
Aqua Parameter helps aquarium hobbyists keep a clean log of water tests. Record pH, ammonia, nitrite, nitrate, KH, GH, TDS and temperature with gentle range bands and trend charts. Everything is stored on your device and syncs between your own iPhone and iPad via iCloud. No account, no ads, no tracking. Offline-first with iCloud sync.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 23, 2026 · 6:47 PM $1.99
Screenshots
