FuelKey works out what your body actually needs, builds a plan with real meals, and turns every day into a checklist instead of a math problem.
Takes about two minutes to set up.
Works in your browser today. iPhone and Android apps are on the way. Get notified
Tap once for eaten, twice for skipped. A meal shows finished either way, so a skipped side never makes breakfast look failed.
Type “chicken thigh” and pick from real foods with real portions. Choose how much, and the calories and protein fill in.
Adding something off-plan gets a live verdict as you type: fits and leaves you this much, or puts you this far over.
Meals and portions sized to your goal. Edit anything, any time; days you’ve already logged keep the plan they were logged with.
Your plan times the days you’re shopping for, grouped by aisle and counted in packages. Tick things off as they go in the cart.
Tick a meal and calories, protein and carbs update on the spot.
Height, weight, age, how you train and what you're after. You get a daily calorie and protein target.
Your plan becomes a checklist. Tap what you ate, mark what you skipped, and search any food to add something extra.
The Shop tab turns the plan into a grocery list. Progress shows the trend after a couple of weeks.
Tick meals as you eat them, or search any food to add it. Running totals sit at the bottom of the screen.
Calories against target, weight on a 7-day average, and your hit rate.
Everything else is built from it. Portions, foods and recipes, all editable.
Multiplied by the days you're buying for, grouped by aisle, in packages.
The parts that make it stick, week after week.
Once a week, on the day you pick, FuelKey measures your real burn from your logs and your weight trend, then suggests at most a 150-calorie change as a real food swap. You approve every change. How it works
Import your weight history and the foods you eat most, so the weekly review knows you from day one.
Mark a meal eaten, see what’s left for the day, and log your morning weight with the Digital Crown. It syncs with your phone in about a second.
Stuck with fast food or a gas station? Say so, and get specific orders that fit what’s left of your day, sized for the meal and heavy on protein.
Restaurant meal or takeout? Take a photo, name the place if you know it, and adjust each part in a tap. Ate it instead of your planned lunch? One switch keeps your day complete.
Scan a barcode, search verified foods with real portions, or describe a meal in your own words and get an estimate in seconds.
Units, reminders at your meal times, and a look that follows your phone. On the web today, and on iPhone, Apple Watch and Android soon, always in sync.
Tick it off on your wrist, weigh in with the Digital Crown, and it’s already on your phone.
Every feature, no card needed to start. Then pick a plan.
Your price is locked in. It never goes up while you stay subscribed, even when prices rise for new members.
| Per year | Meal plan you tick off | Adjusts your targets weekly | |
|---|---|---|---|
| FuelKey | $59.99 | Yes | Yes |
| MacroFactor | $71.99 | No | Yes |
| MyFitnessPal Premium | $79.99 | No | No |
| Carbon | $99.99 | No | Yes |
Published US yearly prices as of October 2026. Theirs may change; yours won’t while you stay subscribed.
Prices in USD, plus tax where applicable. Subscriptions renew automatically; cancel any time. See Terms.
FuelKey runs in your browser today, on any phone or computer. Tell us which phone you have and we'll email you the day its app is ready. Your plan and history come with you.
Real targets for your body, and a plan that does the arithmetic for you.
Create your plan