Metabolic Expenditure Engine vs. Full Food Database App
MacroFactor is an all-in-one food tracking app with a built-in barcode scanner and proprietary expenditure algorithm. AdapTDEE is a dedicated metabolic expenditure calculator: you can log your food in any free app or estimate your calories, and spend 5 seconds entering your total daily calories and morning weight to let our thermodynamic engine calculate your true expenditure.
TDEE Mechanism Comparison
| TDEE Mechanism | AdapTDEE | MacroFactor |
|---|---|---|
| Core Math Model | Thermodynamic Mass Delta (Energy In vs Out) | Energy Balance Algorithm |
| Water Weight Smoothing | Exponential Moving Average (EMA) | Proprietary Trend Weight |
| Adherence Neutrality | 100% Adherence-Neutral | 100% Adherence-Neutral |
| Algorithm Transparency | Fully Published & Cited | Closed Proprietary IP |
| Wearable Step / Burn Dependency | None (Eliminates watch error) | None (Calculates burn from mass) |
| Annual Cost | 100% Free ($0) | $71.99/year |
How the Mathematical Mechanism Works
1. Adherence-Neutral Solving
Traditional apps assume you ate your target and penalize you when you overeat. Both AdapTDEE and MacroFactor use adherence-neutral math: your expenditure is calculated strictly from what you actually consumed vs. how your weight trend moved, removing guilt and shame from tracking.
2. Filtering Scale Noise
A high-sodium meal or intense workout causes 2–4 lbs of acute fluid retention. The algorithm filters daily noise using exponential smoothing, isolating true fat/muscle changes from transient water weight spikes.