Reads a FIT (Flexible and Interoperable Data Transfer) file from a Garmin or ANT+ fitness device and shows the activity summary and GPS/heart-rate records.
Checking what's in a fitness activity file — sport, duration, distance, route — without uploading it to a fitness platform.
Drop a .fit file. Activity summary and a table of GPS/heart-rate samples appear immediately.
Covers the common fields — activity type, duration, distance, GPS points, heart rate. Developer fields are safely skipped (not decoded), and highly specialised message types aren't extracted.