Description
Walking Speed App
Key Features
HealthKit Integration: Access and manage permissions for walking speed and step count data.
Analysis Periods: Switch between short-term (28/56 days) and long-term (12 months).
Data Summary: Yearly cards display average walking speed and average step count.
Statistical Analysis: Time-series trends, variability, regression analysis (R² and slope), and annual rate of change.
Purchase (One-time Unlock)
Unlocked Features: Statistical analysis section (trend/regression/change rate).
Price: One-time purchase of $0.99 (non-consumable, permanent unlock).
Experience: Modern paywall with feature explanations, localized pricing, purchase/restore buttons.
Implementation: StoreKit 2 for purchase, restore, and entitlement handling.
Privacy
Data Usage: Compliant with HealthKit policy, based on explicit user permission.
Analysis: Designed for on-device data processing.