Start with phase guidance
The planner helps decide whether cutting, bulking, or recomposition makes sense first.
Built for fat loss, maintenance, and lean gains
See when your maintenance calories dip and your fat loss stalls.
Does your weight loss or weight gain stop after a while on a diet? MacroCodex helps you spot dips in maintenance calories from metabolic adaptation, then auto-adjusts your calorie target and macros so your plan stays aligned with your real maintenance calories (TDEE).
What MacroCodex helps you do
See when your maintenance calories change instead of assuming your old target still works.
Separate a real adaptation-driven stall from normal day-to-day water weight fluctuations.
Adjust calories and macros using your true maintenance calories (TDEE), not from guesswork or frustration.
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Green dashed line = Maintenance Calories (TDEE)
1. Your fat loss slows down
If your calorie intake looks consistent but the green Maintenance Calories (TDEE) line drops, your old deficit may not be a real deficit anymore.
2. You can see why it happened
Instead of guessing, the chart shows that your maintenance calories changed over time, which is exactly the kind of adaptation that can stall progress.
3. The app tells you the next move
MacroCodex can tighten your calorie target and update your macros so your plan matches your current maintenance calories, not your old ones.
4. You stop reacting blindly
You can tell whether progress stalled because of a real drop in Maintenance Calories (TDEE). You no longer react to day-to-day fluctuations that mostly come from water weight changes.
Why this beats a one-time Maintenance Calories (TDEE) calculator
It usually takes MacroCodex around 3 to 4 weeks of real intake and weight data to lock onto your true maintenance calories. Static Maintenance Calories (TDEE) calculators can be off by hundreds of calories for some people, because they do not learn from what your body is actually doing.
Most TDEE calculators rely on formulas derived from population averages using regression analysis. While formulas such as Katch-McArdle can account for body fat percentage, they cannot capture individual differences in metabolism, activity levels, hormones, or lifestyle. They also struggle to account for metabolic adaptation from long-term dieting, PCOS, thyroid disorders, and other factors that influence calorie needs.
See the full coaching flow
The app is not just a calculator. It helps users choose a direction, build a plan, review trend data, and keep the daily targets visible.
Turn guidance into a plan
Users choose the actual outcome and convert it into calories and macro targets.
Review progress with evidence
Weekly metrics show whether intake, weight trend, and balance support the current goal.
Track trend over noise
Rolling trend and progress cards keep users focused on signal instead of daily swings.
More ways MacroCodex keeps you on track
The app also helps with the small day-to-day decisions: staying active, following your targets, trusting your trend, and choosing the right phase at the right time.
Get nudged when activity drops
MacroCodex can warn you when you are turning sedentary and nudge you to become more active before it quietly slows progress.
Just eat the target and move forward
Your calorie and macro targets stay clear each day, so you can simply follow the plan and keep moving toward your goal with less friction.
Daily scale swings stop controlling you
Trend views make day-to-day weight changes easier to handle, so a random spike or drop does not need to send you into panic mode.
Use the planner to pick the right phase
The planner helps you decide when to cut, lean bulk, or recomp instead of bouncing between phases without a clear reason.