{ "data_structure": "physical_summary", "user_id": "demo-user-01", "physical_health": { "summary": { "physical_summary": { "metadata": { "sources_of_data_array": ["Apple Health - Third Party"] }, "distance": { "steps_int": 8432, "active_steps_int": 6120, "walked_distance_meters_float": 6180.0 }, "activity": { "active_seconds_int": 3240 } } } }}Hammerhead integration
Connect Hammerhead cycling data to your app through ROOK’s unified health data SDK.
How it connects
ROOK reads Hammerhead data via Apple Health or Health Connect.
ROOK's SDK delivers cycling activity, workouts and heart rate from Hammerhead as structured JSON, by webhook and API.
Leverage Hammerhead data to build more personalized cycling, training, coaching, performance, and fitness experiences, improve user engagement, and support better progress tracking, route analysis, and performance outcomes.
Our Hammerhead integration delivers notifications within minutes after a user completes an event and syncs their app.
Read the Hammerhead docs{ "data_structure": "physical_summary", "user_id": "demo-user-01", "physical_health": { "summary": { "physical_summary": { "metadata": { "sources_of_data_array": ["Health Connect - Third Party"] }, "distance": { "steps_int": 8432, "active_steps_int": 6120, "walked_distance_meters_float": 6180.0 }, "activity": { "active_seconds_int": 3240 } } } }}Get started
Connect Hammerhead in three steps.
- Enable Hammerhead in the ROOK portalTurn Hammerhead on as a data source for your client in the ROOK portal.
- Let users connect Hammerhead on their phoneUsers sync Hammerhead with Apple Health or Health Connect once, then grant access in your app through the ROOK SDK or ROOK App.
- Receive standardized dataROOK turns Hammerhead data into the same JSON structure as every other data source and delivers it to your backend by webhook and API.
Use cases
What teams build with Hammerhead data.
From seamless wearable integrations to advanced health insights, ROOK empowers you to build personalized wellness apps, research platforms, fitness dashboards, chronic care solutions and many more great use cases.
Training
Hammerhead data
Hammerhead provides cycling, workouts, power, cadence, speed, distance, and performance data to support training programs and help coaches optimize athlete performance.
Explore fitness use casesFitness
Hammerhead data
Hammerhead provides cycling, workouts, power, speed, distance, cadence, and performance data to help fitness platforms track progress and improve engagement.
Explore fitness use cases
More data sources
More apps that reach ROOK through Apple Health and Health Connect.
FAQ
Frequently asked questions about the Hammerhead integration
What teams ask before they connect Hammerhead through ROOK.
How quickly does Hammerhead data reach my backend?
Our Hammerhead integration delivers notifications within minutes after a user completes an event and syncs their app.
Do I need my own Hammerhead developer account?
No. ROOK handles the Hammerhead connection, so you only enable Hammerhead as a data source in the ROOK portal.
How does ROOK connect to Hammerhead?
Through Apple Health on iOS and Health Connect on Android. Hammerhead writes its data there and the ROOK SDK or ROOK App reads it.
Read the Hammerhead documentationNo questions match that yet. Try another word or topic.
Latest from the ROOK blog
- Industry Use Cases for Wearable Data in 2026Wearable data is no longer limited to fitness tracking. In 2026, organizations across multiple industries use structured wearable data to improve decision-making, personalize services, and build data-driven products — a…Read more

- Best Practices for Wearable Data Privacy and ComplianceWearable data often includes health-related and behavioral information. Organizations that integrate this data into their platforms must design privacy and compliance strategies from the beginning.Read more

- Understanding wearable health metrics and data typesWearable devices generate a large volume of health and behavioral data. However, not all metrics are defined, calculated, or structured in the same way.Read more

Nothing matches that search.
Build on better health data
Turn fragmented health data into your next product advantage.
Connect the sources your users rely on, standardize what comes back, and build workflows that respond to change.















