About PrepForge
PrepForge was built by someone who lifts weights, tracks macros, and got tired of meal prep apps that treat protein as an afterthought. The goal was simple: a recipe library where every single recipe has real macro data, every ingredient is sourced from USDA FoodData Central, and every recipe is scored against your actual fitness goal — not a generic “healthy eating” rubric.
The fitness story is just beginning. PrepForge launched in 2026 as a personal tool and opened up publicly. The recipes, the AI swap engine, and the macro scoring are all built around one question: “Does this meal actually help me hit my protein target and stay in my calorie window?”
How the nutrition data works
Every recipe’s macro data comes from two sources: USDA FoodData Central (the same database used by the FDA for food labeling) and verified product nutrition labels for branded items like Greek yogurt, cottage cheese, and protein powder. We do not estimate macros or use third-party recipe calculators.
Data sourcing standards
- •191 canonical ingredients in the database, all with verified USDA FDC IDs or manual nutrition labels
- •Nutrition calculated per serving, not per 100g — numbers reflect what you actually eat
- •Ingredient quantities are in real cooking units (lbs, oz, cups, tbsp) — not vague amounts
- •Serving size and servings-per-recipe are verified against the recipe batch size
The recipe library
The library currently holds 174 recipes, all built around the same standard: 50g+ protein per serving, 4–6 servings per batch, and a full macro breakdown per serving. Recipes are organized by method (stovetop, oven, slow cooker, grill, no-cook), meal type (breakfast, lunch/dinner, snack, sauce), and cuisine.
Every recipe is scored against your fitness goal when you complete the profile setup. The scoring engine uses your daily calorie target and protein goal to rate each recipe as “use as-is,” “minor tweaks needed,” “needs rework,” or “skip” — so you can browse the full library and immediately see which recipes fit your current phase.
AI tools
PrepForge uses Claude (Anthropic’s AI) for two things: the ingredient swap engine and recipe classification. The swap engine lets you tell it what to change — “swap the beef for turkey,” “remove the cheese,” “lower the fat” — and it returns a modified recipe with recalculated macros. It is not a chatbot; it is a targeted tool with a specific job.
The recipe classification and SEO content (including the opening paragraphs and FAQ sections on every recipe page) were generated using Claude Haiku. Nutrition data was not generated by AI — it comes from USDA, not a language model.
Feedback
PrepForge is actively developed. If a recipe has an error in the macros, a swap gives you something weird, or you want a specific type of recipe added to the library, open an issue on GitHub. The goal is to build the most accurate, most useful high-protein meal prep tool available.
Open an issue on GitHub