Peak: Altimeter

Peak — Precision Altimeter & Barometer Peak turns your iPhone into a precision altimeter and barometer using your device's built-in pressure sensor. Track real-time elevation, barometric pressure trends, and estimated oxygen levels at altitude — perfect for hiking, climbing, and exploring. Track & Measure • Current altitude and elevation gain • Barometric pressure trends • Estimated oxygen (O2) percentage at altitude • Storm warnings from pressure drops • Sea level and known-elevation calibration Whether you're summiting a peak, tracking a hike, monitoring incoming weather, or flying — Peak gives you accurate, real-time atmospheric readings. Live Altitude & Pressure Meter • Large, readable altitude display • Barometric pressure trend graph • Storm warning alerts on pressure drops • Estimated O2 percentage at altitude • Calibrate to sea level or known elevation Pro Features • Summit photo overlay with stats • Historical pressure log • Live widget • CSV export Ideal For • Hikers & mountaineers • Pilots & aviation enthusiasts • Weather monitoring • Outdoor & adventure sports • Science & atmospheric exploration How It Works Peak uses your iPhone's built-in barometric pressure sensor to calculate altitude and track atmospheric conditions. Changes in air pressure indicate elevation shifts and approaching weather — which Peak displays in real time. Subscription Information Peak offers a Weekly Plan and a Lifetime Access option. Try it free to unlock unlimited readings, history, and export features. Payment will be charged to your Apple ID account. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription at any time in your App Store account settings. Disclaimer: Accuracy depends on device hardware and local atmospheric conditions. Terms of Use: https://meraki-dimension.com/peak/terms Privacy Policy: https://meraki-dimension.com/peak/privacy