Privacy Policy
Last updated: 6 April 2026
1. Who We Are
Kasoku (“we”, “us”, “our”) is an AI-powered training platform for athletes and coaches. We are based in Hong Kong and operate the website at kasoku.run.
2. What Data We Collect
We collect the following categories of personal data:
- Account information — name, email address, and profile details you provide when you sign up (processed by our authentication provider, Clerk).
- Training data — workout logs, session plans, athlete profiles, and related training information you enter into the platform.
- Usage data — page views, feature usage, and performance metrics collected automatically through Vercel Analytics and Speed Insights. These are anonymised and do not include personal identifiers.
- AI interaction data — prompts and training context you share with our AI features, used solely to generate responses for you.
3. How We Use Your Data
- To provide and operate the Kasoku platform
- To personalise your training experience and AI recommendations
- To improve the platform based on aggregated usage patterns
- To communicate with you about your account or service updates
We do not sell your personal data. We do not use your training data to train AI models.
4. Third-Party Services
We use the following third-party services that may process your data:
- Clerk — authentication and account management
- Supabase — database hosting (servers located in the cloud; data encrypted at rest and in transit)
- Vercel — website hosting, analytics, and performance monitoring
- Anthropic (Claude) — AI-powered training analysis features
Each provider processes data in accordance with their own privacy policies. We only share the minimum data necessary for each service to function.
5. Data Storage & Security
Your data is stored on servers operated by our hosting providers and may be transferred to and processed in countries outside of Hong Kong. We implement industry-standard security measures including encryption in transit (TLS) and at rest, and access controls to protect your data.
6. Your Rights
Under the Hong Kong Personal Data (Privacy) Ordinance (PDPO), and where applicable the UK General Data Protection Regulation (UK GDPR), you have the right to:
- Access the personal data we hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Object to or restrict processing of your data
- Request a copy of your data in a portable format
To exercise any of these rights, contact us at the email address below. We will respond within 40 days (PDPO) or 30 days (UK GDPR).
7. Cookies
We use essential cookies required for authentication and platform functionality. We use Vercel Analytics which collects anonymised usage data without using cookies. We do not use advertising or tracking cookies.
8. Children
Kasoku is not directed at children under the age of 16. If you are a coach working with athletes under 16, you are responsible for obtaining appropriate parental or guardian consent before entering their data into the platform.
9. Changes to This Policy
We may update this policy from time to time. We will notify you of material changes by posting the updated policy on this page with a revised “last updated” date.
10. Contact Us
If you have questions about this privacy policy or wish to exercise your data rights, contact us at: privacy@kasoku.run