Privacy

UltraFuel is built local-first: your training and fueling data lives on your device, and syncs to your account in the background so your phone and the web app see the same data.

What we store

Your account email, your name if you provide one, and your athlete profile: weight, sweat rate, sodium and carbohydrate targets, and climate setting. Alongside that, the data you create in the app: runs, the fuel and fluids you log on them, how your stomach handled each run (GI feedback), gut-training progress, sweat-test results, and race plans with their aid stations.

Workouts you import

If you connect Strava, we store the activity summaries Strava shares: activity type, name, date, distance, duration, elevation, pace, and temperature. Never your Strava password. If you import workouts through Health Connect (Garmin, COROS, and other watches) or Apple Health, we read the same kind of workout summaries: type, date, duration, distance, and elevation. We do not read or store GPS routes, heart rate, or any other health records, and we never write anything back to Health Connect or Apple Health.

What we don't do

We don't sell your data, we don't show ads, and we don't use analytics or tracking in the app. We don't share your training history with anyone. Crew members you invite to a race see only that race's plan and log, never your training history. Crew access expires 48 hours after you share it.

Where it lives

Synced data is stored with our database provider (Supabase) and protected by per-account access rules. Data on your phone stays on your phone and works fully offline. If you connect Strava, its access tokens are kept in your phone's secure storage, never in the synced database.

The waitlist on this site

If you join the waitlist, our hosting provider (Netlify) stores your email address, and its form service records the submission's IP address as part of spam protection. We use your email only to tell you about launch, and you can ask us to remove it at any time.

Your data, your call

You can export a full backup of your data from the app at any time. You can delete your account whenever you want: in the app under Me → Account → Delete account, or on the web at your web profile. Deleting your account immediately and permanently erases your profile, runs, fueling logs, race plans, and sweat tests, from both your devices and our servers. If you'd rather we do it for you, email the address below.

Questions

Email hello@ultrafuel.app.

UltraFuel targets are informational ranges built from your training data. They are not medical advice.