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

Generate a beginner training split that fits your schedule.

This planner creates a science-based beginner workout structure with resistance training and cardio recommendations aligned to your goals.

  • Generate beginner-friendly training splits and weekly structure.
  • Match program setup to your training frequency and equipment access.
  • Get a clearer starting point than generic routines copied from social media.