Arete Codex
Free fitness tools. No personal data collected.

Android app is out

MacroCodex lets you track your TDEE, weight, calories, and macros from your phone.

Install the free MacroCodex Android app and keep your nutrition data moving with you, without paywalls or subscriptions.

Download on Google Play

Free Tool

Select the right deficit, maintenance, or surplus phase.

The energy phase selector helps you choose calorie direction and magnitude, then frames the phase around weekly milestones and realistic execution.

  • Compare maintenance, deficit, and surplus setups.
  • Choose more appropriate calorie magnitudes for your goal.
  • Use structured phase planning instead of random adjustments.