Hi HN, I built this because I live in a city with limited sunshine and kept missing the good days while working from home.
The problem: Apple Watch tracks "Time in Daylight" but buries it in Health app with zero insights.
What I built:
- Pulls daylight data from HealthKit
- Gives you a daily "Sunshine Score" (0-100) based on duration, frequency, and morning sun bonus
- Shows weekly trends to spot patterns
- Widget + Watch app for quick glance Tech: SwiftUI, HealthKit, WidgetKit, WatchOS. No backend – all data stays on device.
Built this in ~2 weeks with no prior iOS dev experience (used AI coding tools). Got rejected by Apple 4 times before approval – happy to share what I learned about HealthKit app reviews if anyone's curious.
Free to use, optional $1.99/mo subscription for trends.
Would love feedback, especially on the scoring algorithm.
Appreciate the honesty — this is exactly the feedback I need.
Core app is free, subscription is just for trends. But yeah, I'm not married to the model. If enough people prefer one-time purchase, I'd consider adding that option.
elevenapril|3 months ago
The problem: Apple Watch tracks "Time in Daylight" but buries it in Health app with zero insights.
What I built: - Pulls daylight data from HealthKit - Gives you a daily "Sunshine Score" (0-100) based on duration, frequency, and morning sun bonus - Shows weekly trends to spot patterns - Widget + Watch app for quick glance Tech: SwiftUI, HealthKit, WidgetKit, WatchOS. No backend – all data stays on device.
Built this in ~2 weeks with no prior iOS dev experience (used AI coding tools). Got rejected by Apple 4 times before approval – happy to share what I learned about HealthKit app reviews if anyone's curious.
Free to use, optional $1.99/mo subscription for trends.
Would love feedback, especially on the scoring algorithm.
qubex|3 months ago
elevenapril|3 months ago
Core app is free, subscription is just for trends. But yeah, I'm not married to the model. If enough people prefer one-time purchase, I'd consider adding that option.
What price point would feel right to you?