Privacy Policy
Effective Date: March 26, 2026 • Belynx Systems LLC (operating as Belynx Labs)
Belynx Systems LLC, operating as Belynx Labs ("we," "our," or "us"), is committed to protecting your privacy. This Privacy Policy explains how we collect, use, retain, and safeguard your information when you use Ark Fit (formerly Arkonix Strength), our strength training, biometric performance, and AI coaching application (the "App").
We do not use your workout, biometric, or health data for advertising, and we never sell your personal data to third parties.
1. Information We Collect
We collect the following categories of information when you use the App:
A. Account & Contact Information
Name, email address, subscription entitlement status, and authentication credentials managed securely via Supabase and RevenueCat.
B. Training, Biometric & Sensor Data
Workout logs (sets, reps, weight, RPE, rest intervals, and machine configurations), body measurements, progress photos, optional GPS location data during active outdoor cardio sessions, and optional Apple Health / Health Connect or Bluetooth heart rate sensor telemetry (heart rate, active energy, and workout summaries).
C. AI Form Analysis & Voice Coaching Data
When you explicitly initiate an AI form analysis or voice coaching command, video clips or audio prompts are transmitted over encrypted connections to our AI gateway solely to generate biomechanical feedback or log sets. Temporary form-check uploads are automatically deleted after analysis completes.
D. Diagnostic & Performance Telemetry
Anonymous crash reports and application performance logs collected via Sentry to maintain stability.
2. How We Use Your Information
- Personalize training programs, 1RM projections, overload calculations, and Coach Ark AI recommendations.
- Sync your local-first workout database securely across authenticated mobile and wearable devices.
- Verify subscription entitlements and provide direct engineering support.
3. Data Retention & Deletion
You maintain full authority over your data. You may reset local data or request total account and cloud data deletion directly inside the App settings (Settings tab → SYSTEM → DANGER ZONE → “Delete Account & Data”, or “Reset All Data” for local guest sessions) or by emailing support@belynxlabs.com. Account deletion requests are processed within 48 hours, and all server data and backups are permanently purged within 30 days.