RayanPrasanna

A body-mass-index tracker that grew into a small health companion. It started as a single calculation screen and now covers daily habits — water, steps, sleep, breathing — without losing the thing people came for: a straight answer in two taps.

I wrote every layer of it. Jetpack Compose UI with Material 3 and a hand-built theme engine, Room and DataStore for local storage, WorkManager for reminders, and Health Connect for step data. Camera-based heart rate uses CameraX. Revenue comes from AdMob and a RevenueCat subscription that removes ads.

The most recent release cut the download to under half its previous size through R8 rules, unbundled ML Kit and bundle splits — a change users notice more than any feature.

• Instant BMI with an animated gauge and colour-coded WHO or DGE classification.
• Ideal weight range derived from height, age and gender, with progress tracking.
• Health dashboard — daily missions, water, steps, sleep and a Zen breathing screen.
• Heart rate measured through the camera using photoplethysmography.
• Metric, imperial and stones, plus 23 translated locales.
• Charts drawn on Canvas so history renders fast with no charting dependency.