PureGym Apple Wallet

PassKit Vapor Reverse Engineering

Personal project to reduce gym entry time from 47 seconds to 3 seconds. Not open-sourced due to potential TOS implications.

Reverse engineered PureGym's authentication and QR code APIs via mitmproxy
Built Vapor backend for PassKit certificate signing and push updates
Auto-refreshing QR codes via silent push notifications
Location-aware passes using scraped coordinates of all UK gyms
Apple Watch support for wrist-scan entry

Related consulting: Apple Wallet & PassKit, iOS security audit.

Platform iOS, watchOS Year 2025