Privacy Policy
Hare is a running companion for iPhone that connects your training to assistants you choose. This policy explains what we collect, what we do with it, who else processes it, and what control you have over it. We try to keep this short and honest.
What we collect
- Apple sign-in details. When you sign in with Apple, we receive an opaque user identifier and (if you choose to share them) your email and name. We never receive your Apple ID password. Hare is free. Historical subscription records may remain in existing accounts; we never receive card details.
- Health data you grant access to. Heart-rate variability, resting heart rate, sleep, workouts, VO2 max, running-form metrics, and nutrition (if you log it) are read from Apple Health on your device. For each outdoor run we also send a downsampled per-run stream — heart rate plus GPS location and altitude — to our server to compute richer run metrics. See "Where your health data lives" below for exactly what leaves your phone and why.
- Training context and saved coaching. Your plans, check-ins, remembered preferences, saved reviews, proposals and coaching notes are stored on our server. Existing coach conversations are preserved. New conversations happen in the external assistant you choose; Hare stores what that assistant saves through MCP.
- Weather for your runs. We look up the weather at the time and place each run started and keep the result (temperature, wind, rain, humidity) so the coach can factor conditions into run reviews.
- Device tokens for notifications. If you enable push notifications we store an Apple Push Notification token so we can notify you when an assistant saves a review, proposal or briefing.
- Feedback you send. If you use the in-app feedback form, we store your message along with the app version and basic device info so we can reproduce the problem.
- Usage and crash data. We use PostHog for product analytics and Sentry for crash and error reports — details and the opt-out are below.
Where your health data lives
Most of your Apple Health data stays on your phone. The app turns the raw samples into compact summaries (today's readiness numbers, recent daily metrics, and per-run stats like distance, pace, heart rate, and splits) and syncs those summaries to our server. Connected assistants can read the latest synced snapshot even when the app is closed; they cannot force a fresh Apple Health read while your phone is unavailable. Hare does not run automatic AI coaching jobs.
For outdoor runs, more detailed data also leaves the phone. For each outdoor run, the app sends a downsampled per-run stream — about one sample every second or two of heart rate, GPS location, and altitude — to our server, where we store it and compute richer metrics from it: aerobic decoupling (how your heart rate drifted against your pace), grade-adjusted pace, automatic detection of intervals, and recognition of routes you run often. We keep the stream so we can improve and re-run those calculations over time without asking your phone to send it again. This is a deliberate change from earlier versions, which said the full GPS trail and beat-by-beat heart data never left your phone — for these metrics to work, a downsampled copy now does. We still never receive the untouched, full-resolution Apple Health samples, and the only things we do with your location are compute these run metrics and look up the weather at each run's start.
How we use it
Your data is used solely to run Hare — training sync, daily readiness, plans and reviews saved by your connected assistants — plus understanding how the app is used and fixing crashes. We never sell your data. Your health data is never used for advertising or marketing — not by us, and not by any company we work with.
Who processes your data
Nobody buys, rents, or borrows your data. These are the services that process it so Hare can work:
- Apple — Sign in with Apple and push notification delivery. Apple also manages any historical App Store purchases.
- Assistants you connect through MCP — can read your synced training and saved context and write plans, memories and reviews to your account. You authorize each connection with Sign in with Apple and can revoke it in Settings → MCP. Those providers process data under their own terms and privacy policies, including their retention and model-training settings. Hare no longer sends your data to a hosted model provider automatically.
- Open-Meteo — receives the starting coordinates and time of a workout to fetch the weather. The request carries no name, email, or account identifier.
- Sentry — receives crash and error reports from the app and our server, tagged with your user ID, so we can find and fix bugs.
- PostHog — receives product analytics events (which features get used, where onboarding stalls) tied to a pseudonymous user ID, not your name or email. No advertising trackers, no session recording. You can opt out any time in Settings → Analytics.
- Prisma — hosts our server and the managed Postgres database where the server-side data above is stored.
Analytics opt-out
Settings → Analytics turns PostHog analytics off on your device, immediately. Crash reporting stays on — it's how we find out the app is broken.
Exporting your data
Settings → Export my data gives you a JSON file of the data we store for you: account details, preferences, coach conversations and memories, plans, briefings, feedback, sign-in sessions, the weather cache, and your per-run streams together with the metrics and routes computed from them.
Deleting your account
Open Settings → Delete account in the app. This permanently removes your server records — account, coach conversations, plans, preferences, briefings, notification tokens, usage logs, and your per-run streams, computed run metrics, and saved routes — immediately, and asks Apple to disconnect Hare from your Apple ID. Historical versions stored a salted, one-way hash of the Apple sign-in identifier with trial dates to prevent repeat free trials. Those historical records contain no name, email or health data. Hare no longer creates new trial records.
Children
Hare is not intended for anyone under 13. We do not knowingly collect data from children.
Changes
If we change this policy in a way that affects you, we'll update the effective date and notify you in the app the next time you open it.
Contact
Questions, or a privacy request you'd rather make by email: support@hare.coach.