Altimeter Tracker vs AboveSea

Altimeter Tracker is your altitude companion. Measure with precision the height at which you are located above sea level using the native barometric sensors of your iPhone. KEY FEATURES: - Real-time Measurement - Instant access to your current altitude - No Connection Required - Works completely offline, even in airplane mode - Maximum Privacy - Your information never leaves your device. No tracking, no servers, no third parties - Native Sensors - Uses Apple's barometer and location information for maximum accuracy - Interactive Widget - Keep your altitude visible on your home screen or lock screen - Accessible for Everyone - Designed following Apple's accessibility standards - Ad-Free - Clean and focused experience Perfect for: - Hiking and trekking - Climbing and mountaineering - Air travel (works in airplane mode) - Athletes and outdoor enthusiasts - Anyone curious about their altitude - Allows imperial or metric unit system depending on your phone settings PRIVACY AND SECURITY: Altimeter Tracker respects your privacy. It doesn't collect personal data, doesn't use external connections, and doesn't require accounts. You are the only owner of your information. TECHNOLOGY: Built with SwiftUI using Apple's latest APIs. Compatible with iPhone. Your altitude, your control.

Explore approximate terrain elevation above sea level and the depth of seas and oceans. Move the map: the number under the crosshair shows the elevation of the selected point on land or the depth of the sea floor. FEATURES • Terrain elevation and sea depths on the map • Mountains and valleys in 3D • Compare two points: elevation difference and straight-line distance • Search for cities, addresses and coordinates, including degrees, minutes and seconds • View your current altitude from iPhone location services on a separate screen • Save your own places on your iPhone • Meters or feet, light or dark appearance DATA ACCURACY Map elevation comes from a terrain model; sea depths come from bathymetric data. Values are approximate. When zoomed out, values are rounded or the app asks you to zoom in. Narrow summits may be smoothed in the model. Your current altitude from location services is shown separately and can differ from the surface elevation, for example on a bridge or on an upper floor of a building. PRIVACY No registration or advertising. Saved places stay on your iPhone. You can browse the map without granting location access. AboveSea is a reference tool. Do not use it as a surveying instrument, an aviation altimeter or a tool for emergency navigation. Map data © Mapbox © OpenStreetMap contributors. Sea depths: GEBCO Compilation Group (2026) GEBCO 2026 Grid.