Getting started

Install

Get Thermik from Google Play (Android 8 or newer). It is free, with no account and no ads.

Try the sample flight

On an empty logbook, tap Try a sample flight (Emberger Alm, Austria, 48 min) to see everything before you import your own.

Import your activities

Tap + in the logbook:

• Import a folder: pick the Skytraxx FLIGHTS folder (connect the vario over USB-C) or a copy of it. Subfolders are included; nothing in the folder is changed. Later, Sync (↻) picks up new flights from the same folder.
• Import files: single IGC, GPX, KML or KMZ files, or a ZIP of them.

You can also open or share a track file to Thermik from another app (Files, WhatsApp, e-mail).

Thermik recognises duplicates, detects launch and landing, guesses the kind of each activity (flight, hike, bike ride, ski tour, drive, plane) and hides recordings too short to be anything (Settings → Appearance → Show hidden activities). Nothing is deleted.

Download the terrain

The first time you open an activity, Thermik offers Download for the terrain and aerial photos around it (the size is shown). After that it works fully offline. In Austria, Switzerland, Bavaria and France Thermik uses the national aerial photos; elsewhere Sentinel-2.

Next: the 3D view.