Secure iOS Health Tracking App

I’m ready to commission the first release of a security-focused mobile application, launching on iOS before we expand to Android. The core of the product is continuous GPS tracking that must keep running in the background without draining the battery or being shut down by the OS.

To protect sensitive medical data every byte stored on-device has to be encrypted and locked behind biometric authentication (Touch ID / Face ID) with an optional 4- to 8-digit passcode fallback. When pre-set conditions are met—location reached, time elapsed, or user action—the app should automatically issue push notifications to the user (and later to caregivers via a secure service we will integrate).

Security is non-negotiable: please design with Secure Enclave, Keychain storage, SSL pinning, and at-rest encryption from day one so that we are audit-ready for HIPAA-style reviews. I want clean, modular Swift code, well-documented so an Android team can mirror the architecture later.

Deliverables I need from you:
• Xcode project with full source and unit tests
• A TestFlight build demonstrating background GPS, biometric gatekeeping, and automated push alerts
• Brief technical guide (setup, security rationale, extension points)

If you have solid experience shipping background-capable, security-intensive iOS apps that handle health data, let’s talk timelines and milestones.