Approach
Chemistry apps fail by exposing too many knobs. Purselley takes the opposite view: the user enters a small number of real measurements, the app does the math, and the user gets one clear action — a dose, a target, a warning. Less is the feature.
Problem
Pool owners and maintenance pros need fast, accurate chemical calculations but existing apps were either hobbyist toys or enterprise complexity.
How I built it
- ▸Tight Capacitor + native iOS wrapper for full platform polish.
- ▸Custom calculation engine validated against real pool data.
- ▸App Store lifecycle: privacy, review prep, screenshots, submission.
Outcome
- →Shipped to the App Store.
- →Premium positioning, premium finish.
Stack
CapacitorSwiftiOS