sisupt-privacy

Privacy Policy — Sisu Personal Training

Last updated: April 9, 2026

Overview

Sisu (“the App”) is a personal training application developed by Lauri Rantanen (“we”, “us”). Your privacy is important to us. This policy explains what data we collect, how we use it, and your rights.

Data We Collect

Account Data

• Email address — used for authentication and account recovery
• Password — stored securely by our authentication provider (Supabase), never accessible to us in plain text

Profile Data (optional)

• Fitness goals, experience level, sessions per week, session duration
• Body measurements (weight, height, birth year, gender)
• Injuries or limitations

Workout Data

• Workout programs and exercises
• Sets, reps, and weights performed
• Workout dates, duration, effort ratings, and mood
• Calendar entries

AI Interaction Data

• Questions asked to Sisu AI
• AI-generated analyses and program recommendations
• AI memory summaries (interaction history)
• Feedback ratings (thumbs up/down)

How We Use Your Data

All data is used exclusively to provide the App’s functionality:

• Tracking your workouts and progress
• Providing personalized AI coaching and recommendations
• Generating workout programs tailored to your profile
• Displaying analytics and statistics

We do not:

• Sell your data to third parties
• Use your data for advertising
• Share your data with other users
• Track your location

Data Storage and Security

• All data is stored in Supabase (cloud database with servers in the EU)
• Row-Level Security (RLS) ensures you can only access your own data
• Authentication tokens are stored securely in iOS Keychain
• AI analysis is performed via Anthropic’s Claude API — your workout data is sent for analysis but not stored by Anthropic

Third-Party Services

Service	Purpose	Data shared
Supabase	Database, authentication	All app data (encrypted)
Anthropic (Claude AI)	AI coaching	Profile, stats, workout history (for analysis only)

Your Rights

You can at any time:

• View all your data within the App
• Edit your profile and workout data
• Delete your AI memory (Settings → Clear AI memory)
• Delete your account directly in the App (Settings → Delete account). This immediately and permanently deletes all your data, including: workout history, programs, exercises, calendar entries, AI conversations, AI memory, feedback, and your user profile. This action cannot be undone.
• Export your data — contact us for a data export

Data Retention

• Your data is retained as long as your account is active
• Upon account deletion via the App, all data is permanently and immediately deleted

Health Disclaimer

Sisu is a fitness and wellness application, not a medical device or healthcare service. The App and Sisu AI provide general training guidance only and are not a substitute for professional medical advice, diagnosis, or treatment.

• Sisu AI does not diagnose injuries, conditions, or symptoms
• If you experience pain, injury, or any health concern, consult a qualified healthcare professional (doctor or physiotherapist) before continuing training
• The “Injuries & limitations” field is used solely to tailor training recommendations — Sisu AI considers this information when suggesting exercises, but does not provide medical or rehabilitation guidance
• Always train within your physical capabilities and stop if you feel pain or discomfort

By using Sisu, you acknowledge that you train at your own risk and that the App’s recommendations are general fitness guidance, not healthcare advice.

Children’s Privacy

The App is not intended for children under 13. We do not knowingly collect data from children.

Changes to This Policy

We may update this policy from time to time. Changes will be posted within the App or on our website.

Contact

For questions about this privacy policy or your data:

• Email: support@sisupt.org