myAltimeter Privacy Policy

Last Updated: July 5, 2026

CORE PRINCIPLE: All your sensitive data — location, altitude, heading, photos, settings — has NEVER left your device. We cannot access any of your data because we do not operate any servers, databases, or cloud storage. This is privacy by design.

1. Information We Process

Sensor Data (On-Device Only)

• GPS (coordinates, altitude, speed, accuracy) — real-time display, never stored or transmitted
• Barometer (pressure, altitude) — real-time display, on-device only
• Magnetometer (heading, magnetic field) — compass display, on-device only

User Data (On-Device Only)

• Avatar photo — selected via PhotosPicker, JPEG compressed, stored in UserDefaults
• Nickname — free text, stored in UserDefaults
• Settings preferences — stored in UserDefaults

Map Snapshots

• GPS coordinates sent to Apple servers via MapKit for tile generation. Governed by Apple's Privacy Policy.

2. What We DO NOT Collect

• No personal identifiers (name, email, phone, address)
• No user accounts, registration, or login
• No analytics or advertising SDKs
• No servers, databases, or cloud storage — we have no backend infrastructure whatsoever

3. Data Storage & Security