The Problem: Two Devices, No Connection
You're wearing your Fitbit all day—it's tracking your heart rate perfectly. But when you go for a run with phone GPS, or do a gym workout tracked in another app, your Strava activity shows:
- ❌ No heart rate graph
- ❌ Estimated calories (wildly inaccurate)
- ❌ No training zone breakdown
- ❌ Missing the intensity story
Your Fitbit was recording the whole time. That data just can't reach your Strava. Until now.
The Magic: FitGlue Bridges the Gap
FitGlue's Fitbit Heart Rate Booster automatically fetches your heart rate data from the exact time window of your activity and merges it in. But we don't stop there—we add Training Load calculations and Heart Rate Summary stats too.
✨ What FitGlue Creates
- ✅ Full HR Stream — Complete heart rate graph visible in Strava
- ✅ Accurate Calories — Based on real HR, not estimates
- ✅ HR Summary — Min/avg/max heart rate in your description
- ✅ Training Load — TRIMP score showing workout intensity
- ✅ Smart GPS Alignment — Handles clock drift between devices
See the Transformation
How It Works
The flow is simple but powerful:
Activity Arrives from Strava
FitGlue monitors your Strava account. When a new activity appears (from your phone, watch, or any source), it enters your pipeline.
Fitbit HR Booster Activates
FitGlue fetches your Fitbit heart rate data for the exact time window of the activity—second by second precision.
Boosters Transform the Data
Heart Rate Summary adds stats to your description. Training Load calculates your workout intensity. The full HR stream is attached.
Updated Activity Returns to Strava
Your enhanced activity is uploaded back to Strava, now complete with all heart rate data and insights.
Quick Start: Import This Pipeline
Already have FitGlue set up? Import our recommended pipeline configuration instantly.
Manual Import Code
Copy this code and paste it in FitGlue's Import Pipeline dialog:
eyJ2IjoxLCJuIjoiQ29tcGxldGUgQWN0aXZpdHkgRGF0YSIsInMiOiJzdHJhdmEiLCJlIjpbeyJwIjoxfSx7InAiOjE0fSx7InAiOjIxfV0sImQiOlsic3RyYXZhIiwic2hvd2Nhc2UiXX0=
Perfect For These Scenarios
- 🏃 Phone GPS runs — Your phone tracks the route, Fitbit adds the heart
- 🚴 Indoor cycling — Peloton or Zwift without native HR support
- 🏋️ Gym workouts — Add HR data to any strength training session
- 🥾 Hiking — Complete your trail adventures with zone breakdowns
- 🏊 Pool swims — When your watch doesn't capture HR underwater
Why Training Load Matters
With heart rate data, FitGlue can calculate your Training Load (TRIMP)—a science-backed metric that shows how hard your workout really was:
- 💪 Recovery (0-50) — Light effort, easy sessions
- 💪 Moderate (50-100) — Solid workout, good training stimulus
- 💪 Hard (100-150) — High intensity, needs recovery
- 💪 Very Hard (150+) — Maximum effort sessions
Ready to Complete Your Activity Data?
Your Fitbit already knows your heart rate. Let FitGlue bring that data to where you need it most.