Umbra

• The app tracks your route using GPS. When the signal is unstable, it improves accuracy with smart filtering and motion data (like the accelerometer).

• You can pick a saved workout as a “Shadow” and compare your current run against it in real time.

• Train together with other users: see each other’s live location and current stats during a session.

• Customize your main workout panel with the metrics you care about most. Everything else is available with a swipe.

• Export saved workouts as GPX and share them with other people or apps.

• Save your activities to the cloud with attached photos, and view them all together on the map.