Private Garmin training dashboard
Use Garmin data beyond Garmin Connect by keeping original activity files, maps, load metrics, routes, exports, and connected Suunto or COROS workouts in your own account.
Workout Data Comparison
Compare Garmin, Suunto, and COROS workout data
Use Quantified Self as a private training dashboard for device comparison, benchmark reports, metric overlays, source files, sync workflows, and reviewer-ready reports across provider data and custom FIT, TCX, GPX, JSON, or SML imports. Manual uploads and benchmark comparisons are available on the free plan; automatic provider sync and higher limits are paid-plan features.
Comparison Workflow
Understand when devices disagree
Compare service source, original activity files, route traces, and training metrics from connected services, exported workouts, manual uploads, or review test files without moving analysis into another public upload tool. You can start with uploaded files on the free plan before connecting paid service sync.
Garmin Fenix VS COROS Pace Offset +2s
Good Agreement
Hardware Benchmark Analysis
Hardware Benchmark Analysis
GNSS accuracy is good1.2 m CEP50
Heart Rate agreement is excellent0.987 corr.
Stat Differences
DistanceΔ 42 m0.8%MovingΔ 9 s0.4%
GNSS Accuracy
Positional Deviation
Positional Deviation
CEP 50%
1.20mCEP 95%
2.90mRMSE
1.60mMax Dev
5.8m
1.20mCEP 95%
2.90mRMSE
1.60mMax Dev
5.8m
Data Quality
Auto-aligned by +2s to maximize correlation.
Auto-aligned by +2s to maximize correlation.
Heart RateExcellent Correlation
0.987 CorrelationRMSE 2.4MAE 1.8
PowerGood Correlation
0.952 CorrelationRMSE 5.9MAE 4.2
Example values shown from a benchmark report layout; live reports use your selected services or uploaded files.
Capabilities
Comparison tools for services, files, and review workflows
Quantified Self focuses on imported workouts you own, so device data stays tied to your dashboard, history, exports, maps, service connections, and reviewer-ready benchmark reports.
Bring Garmin, Suunto, COROS, manual FIT, TCX, GPX, JSON, and SML imports into one private dashboard so source service, original files, maps, routes, and workout metrics stay visible together.
Compare provider-synced workouts or custom activity files, choose reference and test roles, auto-align time, and save a reusable device-to-device report. Manual uploads and benchmark comparisons are available on the free plan for up to 100 activities.
Review pace or speed, heart rate, power, cadence, elevation, and distance overlays when compatible streams are available on the selected activities.
Use benchmark reports when testing watches, bike computers, sensors, or firmware for YouTube reviews, blog posts, coaching notes, and device QA.
Training Data Hub
From sync to benchmark analysis
Centralize Garmin, Suunto, and COROS workout data, then use the same archive for provider sync, history review, dashboard metrics, source-file workflows, and benchmark reports.
Garmin and COROS to Suunto sync context
Connect source services once, enable the explicit route toggle, and keep new Garmin or COROS activities moving to Suunto while existing workouts remain available for catch-up sync.
Centralized multi-provider workout history
Centralize Garmin, Suunto, and COROS workout data so each service can be useful without trapping analysis inside one device ecosystem.
Custom FIT, TCX, GPX, JSON, and SML imports
Upload files from lab tests, beta firmware, review units, exported workouts, or unsupported services, then compare them with the same benchmark workflow on the free plan, subject to the 100-activity Starter limit.
Evidence for device reviews and blog posts
Create repeatable reports for sports watch reviews, sensor comparisons, coaching writeups, and YouTube videos without publishing raw private training history.
Source Files
Compare custom FIT, TCX, GPX, JSON, and SML files
Quantified Self stores source context for provider imports and manual uploads, so original files from services, review units, unsupported devices, and lab tests can support exports, reprocessing, benchmark workflows, and Suunto sync jobs after the workout is in your account.
FITTCXGPXJSONSML
FAQ
Workout data comparison FAQ
Can I compare Garmin, COROS, Suunto, and uploaded workout files?
Yes. Import provider activities or upload FIT, TCX, GPX, JSON, and SML files, then compare compatible recordings with source-aware maps, charts, overlays, and benchmark reports from the same private dashboard.
Is Quantified Self a FIT file viewer?
Quantified Self keeps original FIT, TCX, GPX, JSON, and SML activity files useful after import, including benchmark and reprocessing workflows, but it is a private dashboard rather than a standalone public file viewer.
Can device reviewers use benchmark reports?
Yes. Reviewers, YouTube creators, bloggers, coaches, and testers can benchmark two recordings from different devices or files, then use the saved report as evidence for device comparisons.
Is workout data comparison available on the free plan?
Yes. Manual uploads, core analysis tools, and benchmark comparisons are available on the free plan for up to 100 activities. Automatic service sync and higher limits require a paid plan.
Can I sync Garmin data to Suunto automatically?
Yes. Connect Garmin and Suunto, enable the Garmin -> Suunto route toggle in Services, and newly imported Garmin activities can be sent to Suunto automatically.
Next Step
Connect services or upload files, then compare the data
Start with the providers, exports, or review files you already have, import the workouts you care about, and keep comparison, sync, and benchmark reporting in one private dashboard. Manual file uploads and benchmark comparisons are free to try on the Starter plan.