Fuel Perfect: Carb & Hydration

Now for iPhone Duo!!

Fuel Perfect turns race-day nutrition from guesswork into a clear, personal plan. Tell it about you and your event, and it gives you exactly how much carbohydrate, fluid, and sodium to take per hour — plus a minute-by-minute timeline of when to eat and drink.

WHAT MAKES IT DIFFERENT

• Weather-aware, for YOUR venue. Enter where and when you're racing. Fuel Perfect pulls the forecast for that exact place and time - or, for races still far out, the typical conditions for that date - and adjusts your fluid and sodium for the heat.
• Every number is cited. Tap any recommendation to see the research or expert guidance behind it. No black box, no influencer hot takes — just transparent sports science you can check yourself.
• Works offline. The whole recommendation engine runs on your device. Only the weather lookup needs a connection.

YOUR PERSONAL PLAN

• Carbohydrate target from 30 up to 90–120 g/hr, scaled to your event length and capped by what your gut can actually handle - with built-in gut-training step-ups.
• Fluid target built from your sweat rate, body size, intensity, and the heat, with guardrails that warn you about both dehydration and over-drinking.
• Sodium target matched to your fluid intake and how salty a sweater you are.
• A clear timeline: exactly when to take each gel, chew, and sip.

REAL PRODUCTS AND DIY

• Map your plan onto real fuels - Maurten, SiS, GU, Precision, Tailwind, Skratch, Neversecond and more - and watch a running total stack up against your targets.
• Prefer to mix your own? Built-in maltodextrin-to-fructose drink-mix and bicarbonate calculators.

GO DEEPER (OPTIONAL)

• Caffeine and sodium-bicarbonate strategies, with clear dosing and safety notes.
• Log your sessions, rate how your gut felt, and watch your carb tolerance climb over the weeks.
• Export any plan as a clean one-page PDF - numbers, timeline, and shopping list.

BUILT FOR ENDURANCE ATHLETES

Whether you're chasing a first marathon, riding gravel all day, or qualifying for Kona, Fuel Perfect meets you where you are and scales as you grow.

PRIVATE BY DESIGN

No account. No tracking. No ads. Your data stays on your device.

Fuel Perfect is an information tool for healthy athletes and is not medical advice. Always test your fueling in training first, and consult a qualified professional for any medical concerns.