Your email and saved trips, nothing else.

The start and destination you pick live in the page address, so you can share a trip by copying the link. Route planning runs entirely in your browser; your trip is not sent to our server unless you press Save.

Your theme, default ride view and rider choice are saved in your browser's local storage, on your device only.

• Sign-in runs on Google Firebase Authentication, with Google or a one-time link sent to your email. We never see a password.
• We store your email, when you joined and last visited, trips you save, and how many Street View rides you took today (Street View costs us money per ride, so signed-in riders get 10 a day). This lives in Google Cloud Firestore.
• Each device gets two Street View rides before we ask you to sign in; that is remembered in your browser's local storage, not on our servers.
• Delete your account in Settings at any time: your saved trips and profile are deleted with it.
• We don't sell or share your data, send marketing email, or use ad trackers.

• Address search: what you type is sent through our server to OpenStreetMap Nominatim to find the place. We keep results in short-lived memory to answer repeat searches faster, and we count requests per network address only to prevent abuse. Nothing is written to a database.
• Street View: during a Street View ride, your browser loads photos directly from Google, under Google's privacy policy.
• Map tiles and street data: the map and buildings load from OpenFreeMap; street stress data and aerial photos load from our Google Cloud Storage bucket and USGS (DC photos from DC government).
• Usage analytics: PostHog counts what people do on the site (pages opened, routes planned, rides started) so we can see what works. No session recordings, and if you sign in it gets an account id, never your email.
• Hosting: the site runs on Vercel, which keeps standard server logs.

BikeSim is an informational planning tool, not safety, legal or professional advice. Stress scores are estimates from public data and can be wrong or out of date. Street conditions change. Verify conditions yourself and ride with care.