💪 Free Exercise Dataset — JSON + Images (RepDB free tier)

A free, ready-to-use multilingual fitness exercise dataset — JSON + 512 px flat WebP illustrations, with target muscles, equipment, MET values, and full instructions in English, German & Spanish. Free for personal and commercial in-app use, with attribution.

⬇️ Download the 250-exercise ZIP →  ·  🌐 Browse live →  ·  ⬆️ Paid tiers →

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What is this?

This is the free tier of RepDB, a curated commercial exercise dataset. It contains the free-tier snapshot (currently 250 of 518+ exercises, 2026-08): each exercise ships as JSON with flat-style 512 px WebP illustrations (start/peak poses, or a single pose for stretches), target muscles, equipment, goals, tags, MET values, and step-by-step instructions in English, German, and Spanish.

Unlike the usual scraped exercise JSONs, everything here is original, consistent, and usable in commercial apps for free — the only hard requirement is attribution. And unlike an API, it's just files: no key, no rate limit, no uptime to worry about.

Important

Attribution is required. Place a visible link — "Exercise data by RepDB (repdb.co)" — in your app's about/credits screen, your project's README, or your website footer. That's the price of the free tier.

Copy-paste Markdown, HTML, and app-credit versions are ready in ATTRIBUTION.md.

License (summary)

Full text: LICENSE-DATA.md. The seven terms in short:

1. Free for personal and commercial use inside applications — apps, websites, research projects, at no cost.
2. Attribution required — a visible "Exercise data by RepDB (repdb.co)" link.
3. No redistribution as a dataset — don't republish, resell, or repackage it (or a derivative) as a dataset, dataset repo, or API. In-app use only.
4. Image modifications — resize/crop/recolor for in-app use is fine; upscaled or background-removed derivatives still fall under the no-redistribution rule.
5. No generative-AI derivation — the images may not be used as input, reference, or training/conditioning material for generative models (image-to-image restyling, style transfer, fine-tuning, etc.); outputs count as derived datasets.
6. premium-samples/ is evaluation-only — the paid-tier samples in that folder may not be used in production or redistributed.
7. No warranty; not medical advice.

This repository is RepDB's own canonical free-tier distribution — term 3 restricts third parties, not this publication (see the "About this repository" note in the license). The index.html viewer code is MIT.

Quickstart

const data = await fetch(
  "https://exercise-dataset.com/exercises.json"
).then(r => r.json());

console.log(data.count, "exercises");
const ex = data.exercises[0];
console.log(ex.name_en, "·", ex.name_de, "·", ex.name_es);
console.log(ex.images.flat.start);   // "images/flat/<id>-start.webp"

import json, urllib.request
url = "https://exercise-dataset.com/exercises.json"
data = json.load(urllib.request.urlopen(url))
print(data["count"], "exercises")
for ex in data["exercises"]:
    print(ex["id"], "→", ex["body_part"], ex["equipment"])

Schema

exercises.json is a single object: { name, homepage, license, schema_version, count, note, exercises[] }.

Each entry in exercises[]:

Field	Type	Notes
id	string	URL-safe slug, e.g. bulgarian-split-squat
name_en / name_de / name_es	string	Display name per locale
description_en / _de / _es	string	One-line summary (where available)
instructions_en / _de / _es	string[]	Step-by-step
tips_en / _de / _es	string[]	Form cues (where available)
category	string	strength, stretching, …
force_type	string	push / pull / static / dynamic
mechanic	string	compound / isolation
difficulty	string	beginner / intermediate / advanced
equipment	string	e.g. dumbbell, kettlebell, cable — absent for bodyweight-only moves
body_part	string	Primary region
primary_muscles / secondary_muscles	string[]	Anatomical slugs
goals	string[]	e.g. hypertrophy, strength
tags	string[]	e.g. knee_safe, no_axial_load
met	number	Metabolic equivalent (for calorie estimates)
is_unilateral / is_bodyweight	bool
images	object	{ flat: {start, peak} } or { flat: {main} } → repo-relative WebP paths

Images

• images/flat/ — flat-illustration style on a solid designed background, 512×512 WebP.
• Most exercises have two poses, start and peak; stretches and holds have a single main pose. Handle both shapes.
• Some near-identical exercise variants intentionally share the same image file (aliases) — key your UI by exercise id, not by image path.
• The path is already in each record — ex.images.flat.peak → images/flat/<id>-peak.webp.

Multilingual

Names, descriptions, instructions, and tips ship in English, German, and Spanish for every exercise in this snapshot — same coverage as the paid dataset.

premium-samples/ — paid-tier preview (evaluation only)

The premium-samples/ folder holds a handful of Standard-tier assets — 5 looping, transparent-background exercise animations, the same clips shown on repdb.co — so you can judge the paid quality before buying. They are evaluation-only: not for production use, not for redistribution (license term 6). See them rendered on the live viewer.

Free vs. paid tiers

	Free (this repo)	Starter	Standard
Images	flat, 512 px	classic white-background, 1024 px + flat	Starter + transparent backgrounds + looping animations
Exercise set	dated snapshot	full, growing dataset	full, growing dataset
Updates	quarterly lagged snapshot	continuous	continuous
Formats	JSON + WebP	JSON + SQLite + WebP	JSON + SQLite + WebP + animations
Languages	EN · DE · ES	EN · DE · ES	EN · DE · ES
License	attribution, in-app only	commercial, no attribution	commercial, no attribution

For perspective: our free tier ships the resolution ExerciseDB charges $299 for.

➡️ repdb.co/pricing — one payment, no subscription, no API, no rate limits.

See it in real apps

Example integrations (each vendors this dataset):

• ▲ Next.js — https://github.com/RepDB/repdb-example-nextjs
• 📱 React Native (Expo) — https://github.com/RepDB/repdb-example-react-native
• 🐦 Flutter — https://github.com/RepDB/repdb-example-flutter

Links

• 🌐 Full dataset & pricing — repdb.co
• 🧪 Live browser for this dataset — https://exercise-dataset.com/
• 💬 Questions — support@repdb.co