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

Browse exercises by muscle group with better training context.

The muscle explorer lets you inspect exercises by target muscle so you can make more informed substitutions and programming decisions.

  • Browse exercises by muscle group and role in a program.
  • Compare movement options with better anatomical context.
  • Use it when choosing accessories or replacing poorly tolerated exercises.