Is Quantified Self a FIT, TCX, or GPX file viewer?
Quantified Self can keep FIT, TCX, GPX, JSON, and SML files useful after import, but it is a private training dashboard rather than a standalone public file viewer.
Workout File Comparison
Compare FIT, TCX, GPX, JSON, and SML workout files
Upload activity files from services, unsupported devices, lab tests, review units, or custom exports, then compare them beside Garmin, Suunto, and COROS provider data. Manual uploads and benchmark comparisons are available on the free plan for up to 100 activities.
FITTCXGPXJSONSMLFree uploads
File Sources
Bring exported workouts into the same dashboard
File comparison is for athletes and testers who have recordings outside the normal provider sync path.
Import FIT, TCX, GPX, JSON, and SML activity files, then keep them available for charts, exports, reprocessing, and comparison.
Use exported files from unsupported tools, beta firmware, lab systems, or one-off device tests without losing source context.
Compare custom files with Garmin, Suunto, and COROS activities that already live in your Quantified Self account.
Comparison
When two recordings tell a different story
Use the same benchmark workflow for service imports and uploaded files so disagreement is visible instead of hidden in averages.
Pick the trusted recording as the reference, pick the file or device under test, and rerun the comparison when needed.
Compare pace or speed, heart rate, power, cadence, elevation, distance, and other compatible streams when the files include them.
Inspect GPS traces and stat deltas so a distance, ascent, or duration difference is easier to explain.
FAQ
Workout File Comparison FAQ
Can I compare custom files with Garmin, Suunto, and COROS activities?
Yes. Uploaded files and provider-imported activities can be compared when compatible activity data and streams are available.
Is workout file comparison free?
Manual uploads, core analysis, and benchmark comparisons are available on the free plan for up to 100 activities. Automatic service sync and higher limits require a paid plan.
Next Step
Upload the files, keep the context, compare the disagreement
Start with the activity files you already have, then move to provider sync only when you need automatic imports or higher activity limits.