Per-meal carb highlighting
Carbs surface alongside calories so you can see whether your pre-long-run breakfast hit the target.
For Runners and endurance athletes
Fuel for the long run — without spending the whole evening logging.
Endurance athletes have the opposite problem from lifters: under-fueling is the biggest risk, especially during a marathon block. CalorieScan AI's photo log makes it possible to track during a heavy week without the tracking itself becoming the second-most-tiring thing about your week.
The pain
Why standard trackers fall short here.
- Activity multipliers wildly over- or under-estimate your TDEE on big mileage weeks.
- Carb timing matters and most apps don't surface per-meal carbs.
- Logging fatigue hits hardest during peak weeks — exactly when fueling matters most.
- Pre/intra/post-run nutrition is hard to track when you're not sitting at a table.
What we do
How CalorieScan AI is built for this.
Apple Health workout sync
Strava, Garmin Connect, Apple Watch — all of it flows in via Apple Health and adjusts your daily target.
Photo log for restaurant meals
After a long run, you don't search a database. You take a photo and move on.
Quick-add for gels and chews
Common race-day fuels (Maurten, GU, SiS, Skratch, Tailwind) are pre-loaded as one-tap entries.
When we're not the right fit
Honest alternatives.
MacroFactor
Best for runners who want adaptive-TDEE recalculation across high-mileage weeks.
Frequently asked
Does CalorieScan AI handle race-day fueling?
Yes — gels, chews, sports drinks and bars from the major brands are pre-loaded as quick-add entries.
How does the activity multiplier work for a 60-mile week?
We use Mifflin-St Jeor for BMR and let Apple Health's active energy data set the activity layer dynamically, so a 20-mile Saturday adds calories to your daily target without you doing math.
Keep reading
Tracking How-To
The tracker and the runner: nutrition for endurance training
Jan 7, 2026 · 3 min
Tracking How-ToWhy your fitness tracker's calorie burn is mostly fiction
Jan 23, 2026 · 3 min
Nutrition ScienceThe cost of not eating enough fat
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Nutrition ScienceTDEE: the only metabolic number you actually need
Mar 21, 2026 · 3 min