Overview
Cylr is committed to protecting your privacy. This document explains how we collect, use, and protect your health and fitness data.
The short version: All your data stays on your device. We don't collect, transmit, or share any personal information.
Data We Access
Apple Health Data
We request access to the following data from Apple Health:
- Heart Rate: Used to display real-time heart rate during workouts and calculate personalized training zones
- Date of Birth: Used to calculate age for personalized heart rate zone calculations
- Workout Data: We read and write workout sessions to maintain your fitness history
How We Use Your Data
Heart Rate Monitoring
- Heart rate data is displayed in real-time during workouts
- Used to track time spent in different heart rate zones
- Helps calculate workout intensity and training effectiveness
Personalized Heart Rate Zones
- We calculate your maximum heart rate using the formula: 220 - age
- Age is obtained from your Apple Health date of birth, or you can enter it manually as a fallback
- Zones are calculated as percentages of your max heart rate:
- Zone 1 (Easy): 50-60%
- Zone 2 (Moderate): 60-70%
- Zone 3 (Hard): 70-80%
- Zone 4 (Very Hard): 80-90%
- Zone 5 (Maximum): 90-100%
Workout Data Storage
- All completed workouts are saved to Apple Health
- Includes metrics: duration, distance, calories, power, speed, heart rate
- Contains interval-by-interval statistics for detailed analysis
- Stored locally on your device within the Apple Health database
Data Privacy & Security
Local Storage Only
- ALL data remains on your device
- We do NOT transmit any health data to external servers
- We do NOT share your data with third parties
- We do NOT use your data for advertising or analytics
User Control
- You maintain full control over your health data
- You can revoke access to Apple Health at any time via Settings → Privacy → Health
- You can delete individual workouts from your history
- Deleted workouts are removed from both the app and Apple Health
Bluetooth Data
- Bluetooth connection to your Echo Bike is local only
- No workout or health data is transmitted over the internet
- Bike metrics (power, speed, cadence) are processed locally
Your Rights
You have the right to:
- View all data collected about you within Apple Health
- Delete any or all of your workout data
- Revoke app access to Apple Health at any time
- Request clarification about our data practices
Changes to This Policy
We may update this privacy policy to reflect changes in:
- App functionality
- Legal requirements
- User feedback and requests
Material changes will be communicated through app updates.
Contact
If you have questions about this privacy policy or our data practices, please contact us or reach out via the App Store.
