CartFit is the only fitness app that builds your entire meal plan from real Costco and Kirkland Signature products — calculated precisely for your body and your goal. No generic databases. No guesswork. Just grab your cart and go.
Costco's bulk buying power means high-protein, whole foods at a fraction of regular supermarket prices. CartFit references publicly available Costco products — chicken breasts, Greek yogurt, wild salmon, protein bars, mixed nuts, eggs, berries and more — to build your meal plan. Buy once in bulk. Eat clean all week. No wasted food. No extra trips.
CartFit does all the math so you don't have to. Enter your body stats once, pick your goal, and get a complete week of meals built from products you can grab on your next Costco run.
Height, weight, age, sex, and activity level. CartFit calculates your exact TDEE and daily macro targets using proven, science-based formulas.
Get Lean, Get Big, Get Slim, or Maintain. Each goal adjusts your calories and protein targets automatically — personalized to your body weight.
A complete daily and 7-day weekly meal plan with exact portions — breakfast, lunch, dinner, and snacks — all using real Costco and Kirkland products.
CartFit generates your complete shopping list, organized and ready. One Costco trip covers your entire week.
Every goal in CartFit is backed by science-based calorie and protein targets, calculated specifically for your body weight — not generic population averages.
Calorie deficit at 90% of your TDEE. Protein at 1.8g per kg to preserve every gram of muscle while you drop body fat steadily.
Calorie surplus at 112% of TDEE. Protein at 1.6g/kg to maximize muscle growth with the right foods to fuel serious training.
Aggressive deficit at 75% of TDEE with 1.4g/kg protein to minimize muscle loss while burning fat fast and keeping energy up.
Exactly 100% of your TDEE. 1.2g/kg protein. Stay exactly where you are — strong, healthy, and in full control of your body.
CartFit builds your plan around Costco products, but your life doesn't stop at the warehouse door. The built-in food tracker lets you log anything from any store, restaurant, or brand — so your macros stay accurate no matter what you eat.
Whether it's a Kirkland protein bar at home, a restaurant lunch, or groceries from another store — log it all in CartFit and stay on track. Your daily macro dashboard updates in real time so you always know exactly where you stand.
You are never limited to Costco when tracking. Add any food from absolutely anywhere. CartFit keeps a running total of your calories, protein, carbs, and fat — synced to your personal daily targets.
CartFit packs a full suite of nutrition tools into one clean, simple app — built for people who shop smart and want to eat right.
Your exact daily targets from your height, weight, age, sex, activity level, and goal. Science-based. Personal to you.
Every meal built from publicly available Costco and Kirkland Signature product data with verified macro breakdowns. Real food. Real results.
A full rotating weekly meal plan with leg day and cardio day tagging. Your plan adapts to how hard you're training each day.
Log every meal — Costco products or anything else from any store or restaurant. Track calories, protein, carbs, and fat in real time.
Every ingredient for your whole week automatically organized into one clean list. One trip. Whole week covered.
Personalized daily hydration targets with smart reminders. Staying hydrated is a core part of hitting any fitness goal.
Download CartFit free. Start your 7-day free trial of CartFit Pro today.
$4.99/month or $29.99/year · 7-day free trial · Cancel anytime
Legal Notice: CartFit is an independent application and is not affiliated with, sponsored by, endorsed by, or in any way connected to Costco Wholesale Corporation. Costco® and Kirkland Signature® are registered trademarks of Costco Wholesale Corporation. CartFit references publicly available product and nutritional information solely to help users build personalized meal plans. All trademarks belong to their respective owners.