Coach GPT App

🔐 Privacy Policy

Last updated: 2026

The Coach GPT App is designed to be stateless, transparent, and privacy-respecting by default. This page explains exactly what data is accessed, how it flows through the system, and what is not stored.

🧭 Who This Applies To

This privacy policy applies to:

• The Coach GPT App experience inside ChatGPT and other LLMs
• The supporting Cloudflare and Railway execution pipeline
• All interactions that access Intervals.icu data via OAuth

📡 Data Sources

All athlete training and wellness data originates from Intervals.icu. The Coach GPT App does not collect data directly from devices, browsers, or sensors.

• Activities, intervals, and FIT-derived metrics
• Wellness logs (HRV, sleep, mood, soreness, etc.)
• Derived metrics computed from Intervals.icu datasets

Intervals.icu remains the single source of truth at all times.

🔑 Authentication & OAuth

Access to Intervals.icu data is granted using OAuth authorization.

• You explicitly approve access via Intervals.icu
• No usernames or passwords are ever shared
• OAuth tokens are handled exclusively by Cloudflare Workers
• Tokens are never exposed to the language model

OAuth access can be revoked at any time from your Intervals.icu account.

🧠 Role of AI / LLMs

Large Language Models (LLMs), including ChatGPT, are used only to interpret and explain results.

• LLMs receive pre-computed, audited semantic JSON only
• No hidden inference or recomputation occurs

All numerical computation is performed server-side using deterministic Python code. LLMs like ChatGPT, Claude etc. can interpret this data and can make mistakes. Please double check reponses.

🚉 Processing & Execution

Data processing occurs in a controlled backend environment:

• Execution on Railway (FastAPI + Pandas)
• Tier-0 schema validation
• Tier-1 numeric consistency checks
• Tier-2 scope enforcement and locked totals

The output is a single canonical Semantic JSON document (URF v5.1) with explicit context windows (activity, 7-day, 90-day, rolling).

🧾 Data Storage

The Coach GPT App does not maintain a user database.

• No personal data is permanently stored by this website
• No training history is retained outside execution context
• No profiles, dashboards, or accounts exist

Any temporary processing data exists only for the duration of a request.

🍪 Cookies & Tracking

This website:

• Does not use cookies
• Does not use analytics trackers
• Does not embed advertising networks

No behavioral tracking or cross-site profiling is performed.

🌍 Data Location & Transfers

Depending on your usage:

• Intervals.icu processes data under its own privacy policy
• Cloudflare and Railway may process data in regional data centers
• LLM providers process text responses under their own terms

No additional third-party data sharing occurs beyond what is required to generate the requested report.

🧠 Your Rights (GDPR)

Because the Coach GPT App does not store personal data, most GDPR requests should be directed to:

• Intervals.icu — for training and wellness data
• Your chosen LLM provider — for chat history retention settings

You may revoke OAuth access at any time and discontinue use immediately.

🔁 Changes to This Policy

Architectural or data-handling changes are documented publicly in the Changelog.

The ROADMAP and design evolution are fully transparent by intent.

📬 Contact

For privacy or data-handling questions, contact:

• GitHub: revo2wheels
• Intervals.icu DM