How can we help?
Questions, feedback, or an issue with the app or website? Tell us what’s happening.
Help us help you.
For app issues, please include your app version, iPhone model, iOS version, and what you were trying to do.
- The screen or feature you were using.
- Steps to reproduce the issue.
- Screenshots, if useful.
- Vehicle setup details only if relevant.
Station or price corrections
Send the station name, address, and details that need updating. Community data can become stale; verify pump labels before fueling.
Common help topics
Why can’t I reach my target blend?
The fuel already in your tank and the pump percentages limit the range you can reach when filling it. The web calculator shows the reachable range. Recheck measured values rather than assuming every E85 pump contains 85% ethanol.
Why does a cheaper fill-up cost more to drive?
Higher ethanol blends can reduce MPG. The homepage comparison separates fill-up price from estimated cost per 100 miles, so you can compare the same driving distance.
Where are Pro subscriptions managed?
Pro is purchased through the App Store. You can manage or cancel your subscription through Settings on your iPhone. If your access doesn’t look right, email us with your app version and a description of the issue; never send payment details.