Hiko Privacy Policy

Hiko does not collect your data. Everything stays on your device. There are no servers, no accounts, no analytics, no advertising, and no third parties involved.

What Data Hiko Accesses

Hiko requests read access to Apple HealthKit data to personalize workouts:

• Body mass — accurate calorie calculations
• Lean body mass — refined metabolic estimates
• Body fat percentage — refined metabolic estimates
• Height — stride and pace calculations
• Biological sex — metabolic rate modeling
• Date of birth — age-adjusted heart rate zones
• Heart rate — real-time effort monitoring
• Resting heart rate — aerobic fitness baseline
• Heart rate variability (HRV) — recovery and readiness insights
• Sleep analysis — recovery context
• Step count — activity tracking

Hiko writes completed workouts to HealthKit: active calories, distance, elevation, GPS route.

You control every permission. You choose what Hiko can read and write in iOS Settings → Health → Data Access & Devices → Hiko.

How Your Data Is Used

Your data is used for one purpose: making Hiko work for you. HealthKit data calculates metrics, sets training zones, displays history. Location data maps your route during active workouts only — never in the background. Motion and barometric sensor data measures elevation gain. Hiko never analyzes data for profiling, behavioral analysis, or advertising.

How Your Data Is Stored

All data lives on your device using Apple SwiftData. No servers exist. HealthKit data is encrypted and managed by Apple. If you use iCloud Health sync, Apple syncs with end-to-end encryption — Larsen Studio has no access. If you delete Hiko, all app data is permanently removed.

Third Parties

There are none. Hiko contains no third-party SDKs, no analytics libraries, no crash reporting services, no advertising networks. The only external systems are Apple's own frameworks — HealthKit, CoreLocation, CoreMotion.

Children's Privacy

Hiko does not collect data from anyone, including children under 13. All data remains on-device, no accounts or identifiers are created.

Changes to This Policy

Updates posted with new effective date. Material changes only when data handling genuinely changes.

Frequently Asked Questions

Does Hiko collect any personal data?

No. Hiko collects zero personal data. All calculations happen on your iPhone. Hiko has no servers, no backend, no accounts.

Does Hiko share data with third parties?

No. Hiko contains no third-party SDKs, analytics, crash reporters, or ad networks. No data leaves your device.

Is my health data safe with Hiko?

Yes. HealthKit data is encrypted by Apple. Hiko reads from HealthKit for calculations but does not maintain separate copies. Your data stays in Apple's encrypted container.

What happens to my data if I delete Hiko?

All locally stored Hiko data is permanently removed. HealthKit workouts saved by Hiko remain in HealthKit unless you delete them separately.

Does Hiko track my location?

Only during active workouts. Hiko uses GPS to map routes and calculate distance. Location access is active workout only — never in the background.

Contact

Privacy questions: [email protected]

Larsen Studio

Effective date: February 26, 2026