Privacy & data use
Plain-language summary of how we handle your data. Short version: it runs the product for you, and we only train on it if you opt in, de-identified.
What we hold
Your account details, training data (activities and the metrics we compute), wellness data (HRV, resting HR, sleep, weight, and how you feel), planning data, and coaching relationships. We treat HRV, resting HR, sleep and weight as sensitive health data.
How we use it
First, to run the product for you: your analysis, readiness and recommendations, synced across devices. Second, to improve our models, but only with your explicit opt-in and only in de-identified form. We never sell your data and run no ad trackers.
Model training
When you turn on "Use my data to improve QuikShift," data entering a training set is stripped of direct identifiers and precise GPS first. Training learns population and personalized patterns, not your individual records. It is off by default and revocable, and turning it off excludes your data from future training.
Hosted AI (Google Gemini)
Some AI features — coach analysis narration, chat, and workout parsing — send only the inputs they need (derived training metrics, chat messages, and workout text you type) to Google’s Gemini API at request time to generate the response. Raw activity files, precise GPS, and your account identifiers are not sent. We use the paid Gemini API, under terms that do not allow Google to use this data to train its models. This per-request processing is separate from the model-training opt-in above, which stays de-identified and runs on QuikShift-controlled hardware.
Apple Health (iOS app)
If you allow it, the iOS app reads two daily figures from Apple Health — heart rate variability and resting heart rate — and stores them on your account as wellness data, exactly as a connected watch or ring would. Nothing else is read and nothing is ever written back to Health. Once stored it is sensitive health data under this policy and is treated identically to wellness data from any other source, including the model-training opt-in above. It is never used for advertising, never sold, and never shared with third parties. Revoke access any time in iOS Settings → Privacy & Security → Health → QuikShift; that stops new readings, and days already synced can be cleared like any other wellness entry.
Your rights
Access and export your data, delete your account, and withdraw training consent any time in Settings. Coach access is limited to the permissions you grant and is revocable.
Security
Passwords are stored only as PBKDF2-SHA256 hashes; sessions are random tokens. Your data is tied to your account.
This summary is a working draft pending legal review. Manage your training-data consent any time in Settings.