This policy explains what Trine Running (SFE, LLC) collects about you, why, who else sees it, and the choices you have. It covers the website and the client portal.
Last updated 17 September 2026 · SFE, LLC
The short version.To coach you, we store your account details, the running clips you upload, and what we find in them. Still frames from your clips and your gait measurements are sent to Anthropic's Claude to draft your report — a coach always reviews it before you see it. We never sell your data. You can ask for a copy or for deletion at any time by emailing scott@trinerunning.com.
SFE, LLC, trading as Trine Running, a limited liability company registered in Oklahoma, United States. We are the data controller for the information described here.
Post: 2812 Northeast 133rd Street, Edmond, Oklahoma 73013, United States
Email: scott@trinerunning.com
For people in the European Economic Area, our Article 27 representative is [EU REPRESENTATIVE — to be appointed]. In the United Kingdom it is [UK REPRESENTATIVE — to be appointed].
Your full card number never reaches us. Payments are handled entirely by Stripe; we receive only a confirmation, the last four digits and the billing details you give them.
Video of your body, together with injury history, can reveal information about your health. Under European and UK law that is a “special category” of personal data needing stronger protection, and we treat it that way everywhere, not only in Europe.
When your coach analyses a session, a small number of still frames from your clip and your gait measurements are sent to Anthropic's Claude, which drafts a written summary. Your name, email and account details are not sent.
A draft is never published automatically. Your coach reads, edits and approves every report before it appears in your portal. The AI assists the coach; it does not decide anything about you, and nothing about your coaching is decided by automated means alone.
Anthropic processes this data on our instructions and does not use it to train its models. If you would prefer your clips were not processed this way, email us and we will analyse your session without it.
Where European or UK law applies, our legal bases are: performing our contract with you (providing coaching and taking payment); your explicit consent (for clips and the health information in them); our legitimate interests (keeping the service secure and improving it); and legal obligations (tax and accounting records).
We do not sell your personal information, and we do not share it for advertising. We use these providers to run the service:
| Provider | What they do | What they see | Where |
|---|---|---|---|
| Supabase | Database, login and video storage | Account details, uploaded clips, gait findings, coaching notes | United States (us-east-1) |
| Vercel | Website and application hosting | Technical request data, including IP address | United States |
| Stripe | Payments and subscriptions | Name, email, billing address, card details (held by Stripe, never by us) | United States and globally |
| Anthropic | AI drafting of coaching summaries | Still frames from your clips and your gait measurements | United States |
| Apple (iCloud Mail) | Sending account and enquiry email | Your email address and message content | United States |
We may also disclose information if the law requires it, or to establish or defend legal claims.
We are based in the United States and our providers store data there. If you are in the European Economic Area or the United Kingdom, your information is transferred outside your country. We rely on the European Commission's Standard Contractual Clauses, and the UK Addendum, as the safeguard for those transfers. You can ask us for a copy of the arrangements.
You can ask us to delete your clips sooner at any time, and we will unless we are required to keep something for accounting reasons.
Wherever you live, you can ask us to give you a copy of your data, correct it, delete it, or stop using it in a particular way — including withdrawing consent for the AI drafting described above. Email scott@trinerunning.com and we will respond within 30 days. We will not treat you differently for exercising these rights.
In the EEA or UK you may also object to processing, ask for your data in a portable format, and complain to your national data protection authority. In the UK that is the Information Commissioner's Office.
We use only the cookies needed to keep you signed in. We do not use advertising or analytics cookies, and there is no tracking across other websites — which is why you are not being asked to accept a cookie banner. If that ever changes, we will ask for your consent first.
This service is for adults. It is not intended for anyone under 18, and we do not knowingly collect information from children. If you believe a child has given us information, email us and we will delete it.
Data is encrypted in transit and at rest, access is restricted at the database level, and payment details never touch our systems. No service can promise perfect security, but if a breach affects your personal data we will notify you and the relevant authority as the law requires.
If we change this policy we will update the date above, and tell you by email before anything significant takes effect.
Questions: scott@trinerunning.com. See also our Terms of Service and Health & Safety Disclaimer.