Fuelstate: Marathon Fueling

Carb · sodium · gel timing

Free · In-App Purchases

Turn the gels and drink mix you already use into a personalised packing list and live fuelling cues that remind you mid-run. Fuelstate calculates your exact carbs, sodium, and fluid for every marathon, training run, and race — then shows a live countdown on your Lock Screen so you never miss a gel. Built for marathons, ultras, half marathons, and triathlons. Science-based targets that adapt to your body weight, temperature, humidity, terrain, fatigue, and gut sensitivity — not generic “one gel every 45 minutes” advice. PERSONALISED FUEL STRATEGY • Calculates per-run carb, sodium, and fluid targets based on your physiology • Adapts to temperature, humidity, terrain, fatigue, and gut training history • Supports gels, chews, drink mixes, electrolytes, and salt capsules • Caffeine tolerance and stomach sensitivity adjustments built in LIVE RUN MODE • Real-time fuel countdown on your Lock Screen and Dynamic Island • Apple Health and Strava workout sync — imports runs from any GPS watch or fitness tracker • Per-event reminders for every gel, drink, and electrolyte intake • GPS route tracking with pace and elevation data • Heart rate zone-aware fuelling cues RACE DAY MODE (PRO) • Full race protocol with pre-race, per-hour, and finish-line fuel windows • Live Activity countdown so you never miss a sodium hit or gel window • Built for marathons, ultras, triathlons, and trail races CARB LOADING PLANNER (PRO) • Science-based 3-day protocol tailored to your body weight and race distance • Day-by-day macro targets and meal timing breakdown • Takes the guesswork out of race week nutrition FEMALE CYCLE SYNC (PRO) • Sodium and carb targets automatically shift with your training phase • Built for women training and racing across their full cycle EXTENSIVE PRODUCT CATALOGUE • Curated database of leading endurance fuel brands — accurate nutritional data per serving • Carbs, sodium, caffeine, and calorie data for gels, mixes, chews, and electrolytes • Build your personal pantry and race-day loadout • GI history tracks which products work for your gut WHAT RUNNERS GET WRONG Most runners undereat on long training runs and overfuel on race day. Fuelstate fixes both. Your targets update dynamically based on intensity, sweat rate, and conditions. Fuelstate Pro unlocks Race Day Mode, Carb Loading Planner, Female Cycle Sync, PDF Export, and the full electrolyte brand database. Subscription options: $7.99/month or $59.99/year. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel any time in your Apple ID account settings. Fuelstate is a sports nutrition planning tool for athletes. It is not medical advice and does not diagnose, treat, prevent, or cure any condition. Consult a healthcare provider for medical guidance. Privacy Policy: https://fuelstate.app/privacy Terms of Use (EULA): https://fuelstate.app/terms Support: hello@fuelstate.app

  • This app has not received enough ratings or reviews to display an overview.

Bug fixes and polish for planning, purchases, and saved plans.

The developer, Fuelstate LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Purchases
    • Location
    • Contact Info
    • Identifiers
    • Usage Data
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Provider
  • Fuelstate LLC
Size
  • 159.1 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Apple Watch
    Requires watchOS 10.0 or later.
Location
  • This app may use your location even when it is not open, which can decrease device battery life.
Languages
  • English
Age Rating
13+
  • 13+
  • Infrequent
    Medical Treatment Information

    Contains
    Health or Wellness Topics
In-App Purchases
Yes
  • Fuelstate Pro Annual USD 34.99
  • Fuelstate Race Block USD 22.99
  • Fuelstate Race Week Pass USD 5.99
  • Fuelstate Pro Annual Plan USD 34.99
  • Fuelstate Pro Monthly Plan USD 5.99
Copyright
  • © 2026 Fuelstate LLC