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sergei-argutin

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Free exercise data for your fitness app (JSON + images, EN/DE/ES)

If you're building a fitness app and need real exercise data — not a bare name list — here's a free, illustrated, multilingual dataset you can drop straight into an app.

RepDB Free Tier — 400 exercises, free for commercial use inside apps (with attribution):

  • 400 exercises as clean JSON (a dated snapshot of the full, growing RepDB catalog).
  • Flat-style illustrations at 512 px (WebP, start/peak poses — or a single pose for stretches). That's the same image resolution ExerciseDB charges $299 for.
  • Target muscles, equipment, category, MET, goals, tags per exercise.
  • Step-by-step instructions in English, German and Spanish.
  • A few looping animation previews bundled in — the same clips you see on repdb.co — so you can judge the paid-tier motion quality (these previews are evaluation-only).

License: the free tier is free for personal and commercial use inside applications, with a visible attribution link ("Exercise data by RepDB — repdb.co"). You may not repackage or redistribute it as a standalone dataset/API — in-app use only. (It's not CC-BY-NC; you can ship it in a commercial app.)

Get it:

Need more? The full RepDB dataset keeps growing (478+ today) and adds a second 1024 px classic illustration style, transparent backgrounds, and looping animations for most exercises, under a commercial license → https://repdb.co / https://repdb.co/pricing

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