Maintenance Calorie Calculator

A fitness tool that calculates your true maintenance calories using adaptive algorithms based on your eating and weight data, rather than static formulas. More accurate than fitness trackers, it helps people optimize their diet for lean bulking, cutting, or body recomposition.

Continuous glucose monitors, smart scales, and wearables have made personal metabolic data more accessible than ever, creating real demand for tools that actually use that data intelligently rather than defaulting to Mifflin-St Jeor. MacroFactor is the closest incumbent and does this reasonably well, which is both validation and a problem — it already has brand recognition in the fitness tracking space and a loyal user base. The $2k–$10k/mo revenue band is plausible for a niche tool with a subscription model, since fitness enthusiasts will pay for accuracy, but the ceiling is low unless distribution is solved early. The biggest risk is that MacroFactor has already captured the audience willing to pay for algorithm-based calorie tracking, leaving only a thin slice of users who are dissatisfied but not enough to build meaningful MRR on.