1. Overview
E85 Scout ("we") helps drivers find E85 and flex-fuel stations and share crowdsourced ethanol test results. This policy explains what data we collect, why we collect it, and what control you have over it. It applies to the E85 Scout app (including the web app at app.e85scout.com) and this website.
2. Information We Collect
Account information
When you create an account, we collect your email address, a username, and assign you a random user ID (a Supabase UUID). Using the app requires an account.
Content you submit
If you contribute to the community, we store what you submit: ethanol test results (the station, blend, measured ethanol percentage, and a photo of your test), station submissions, station reports and verifications, and your favorites. Please note that test photos are stored in a publicly accessible storage bucket — anyone with the photo's URL can view it, and the photo's file name includes your username — so don't include anything personal in the photo.
Location
The app uses your device's precise location to show nearby stations and sort results by distance. Your GPS location is processed on your device and is not stored on our servers or linked to your identity. Two related data flows do leave the device: the map downloads its tiles from CARTO, so CARTO receives ordinary web requests (your IP address and the map area you're viewing, which typically follows your location); and if you type an address into the search bar, that address text is sent to Google's Geocoding API to convert it into map coordinates and is also recorded as a search event in our analytics.
Analytics
We use Firebase (Google Analytics) to understand how the app is used. This collects usage data and device information — including in-app search terms — with IP anonymization enabled. Analytics event data is retained for 2 months and user-level data for 14 months. We do not use analytics data for cross-app tracking or advertising. The only identifier tied to analytics is your Supabase user UUID — never your email address.
3. How We Use Information
We use the information above to:
- Operate the app and show you nearby stations.
- Display crowdsourced station data, such as aggregated ethanol percentages from community tests.
- Moderate submissions — test photos are reviewed before approval, including automated LLM-assisted verification, to keep station data trustworthy.
- Send account emails (like email verification) and occasional product updates via Resend. Every marketing email includes an unsubscribe link.
We don't sell your data, and we don't share it with third parties for advertising.
4. Third-Party Services
E85 Scout is built on a small number of service providers, each of which processes data under its own privacy policy:
- Supabase — database, authentication, and photo storage.
- Google Firebase Analytics — usage analytics (as described above).
- Google Geocoding — converts typed address searches into map coordinates.
- CARTO / OpenStreetMap — map tiles (receives your IP and map viewport, like any website you visit).
- OpenRouter — automated AI review of submitted test photos (the photo and submitted ethanol % are sent for verification).
- Resend — account and product-update emails.
- Featurebase — our feedback portal, only if you choose to use it.
This website serves its fonts and styles from our own servers. It loads Google Tag Manager (for the analytics described above) and requests live public statistics (station and test counts) from our Supabase backend — both receive standard web-request data (such as your IP address). If you subscribe to product updates on the homepage, the email address you enter is sent to our Supabase backend and stored with our email provider, Resend.
5. Data Retention & Deletion
We keep your account data for as long as your account is active.
You can delete your account at any time in the app (Info → Delete Account). Deleting your account permanently removes your account, email address, username, favorites, reports, pending and rejected test submissions, and all photos you uploaded. We also remove your email address from our mailing list (and every email we send includes an unsubscribe link, in case anything slips through).
Ethanol test results that were already published (approved, or flagged for further review) are retained anonymously — they are no longer linked to any identity — so that station data stays accurate for other drivers. Stations you submitted likewise remain in the database, no longer linked to you.
6. Your Rights
You can access, correct, or delete your data. Account deletion is self-serve in the app (see above). For anything else — access requests, corrections, or questions about this policy — reach us through our feedback portal at e85scout.featurebase.app.
7. Children
E85 Scout is not directed at children under 13, and we don't knowingly collect personal information from them. If you believe a child has created an account, contact us via the feedback portal and we'll remove it.
8. Changes to This Policy
If we change this policy, we'll update this page and the effective date at the top. Significant changes may also be announced in the app.
Effective date: July 9, 2026