Every question the Fitness APIs pages answer
The 10 fitness apis pages answer 50 named questions between them. Every one is listed below, and every link lands on the paragraph that answers it rather than the top of the page.
The Best Exercise Database APIs for Developers (2026)
- What is the best free exercise database API?The most obligation-free option is the free-exercise-db dataset, which is public domain (Unlicense) with 800+ reported exercises and static…
- Why are there two different ExerciseDB APIs?The name is shared by two separate projects: the older commercial listing on RapidAPI (publisher justin-WFnsXH_t6), historically around…
- Which exercise API has GIFs or video demonstrations?Animated media is the main paywall differentiator. The commercial ExerciseDB on RapidAPI provides animated GIFs, and exercisedb.dev reports…
- Is wger's exercise API really free to use?Yes. wger is open source with no per-request fees, and its public exercise-list endpoints are readable without authentication. The costs…
- Does API Ninjas offer a free exercise endpoint?Not for exercises specifically. API Ninjas has a free tier for other endpoints, but the Exercises endpoint is reported to be premium-only,…
The Best Wearable Fitness & Health-Data APIs (2026)
- Are wearable fitness APIs free to use?As of 2026, Fitbit/Google, Garmin, Oura, WHOOP and Polar all publish no per-call fee and are documented as free to use. The real cost is…
- Which wearable API is best for GPS and running data?Garmin is generally the richest for GPS, multisport and endurance metrics, with over 100 activity types plus session detail. Polar is a…
- Do wearable APIs push data to me, or do I have to poll for it?It varies by provider, and it changes your architecture. Garmin delivers through registerable push and ping callback URLs, so you build an…
- Do wearable APIs let me pull data for all users at once?No. These are consent-based OAuth 2.0 APIs that return data only for individual users who explicitly authorize your app — none is a bulk or…
- Which wearable API has the least approval friction?Polar's Open AccessLink is generally the most self-serve: you register a client yourself and tokens are long-lived. The trade-off is that…
The Best Health-Data Aggregator APIs (2026)
- What is a health data aggregator API?It is a server-side API that normalizes data from many wearables and health accounts behind one integration, so you connect once instead of…
- How is an aggregator different from Apple HealthKit or Google Health Connect?HealthKit and Health Connect are on-device, OS-locked SDKs that only expose data on that one device and are free but platform-bound.…
- Do I still need my own developer accounts with each wearable provider?For most providers the aggregator brokers the auth, but for several popular ones — commonly Garmin, Whoop, Strava, Dexcom, and Samsung…
- How much do health data aggregator APIs cost?The pricing models differ and exact figures change, so verify current pricing on each vendor's page. As of 2026, Terra uses subscription…
- Which aggregator API supports lab and diagnostics data?Vital/Junction is the option built around both wearable data and at-home or in-person lab diagnostics in one integration, though its lab…
The Best AI Workout & Motion-Tracking APIs (2026)
- What is the difference between a pose estimation API and an AI workout tracking SDK?A pose-estimation API such as MediaPipe, MoveNet, or Apple Vision gives you a skeleton of joint keypoints per frame and nothing more. A…
- Is there a free AI workout tracking API?The pose-estimation primitives are free and permissively licensed: MediaPipe/BlazePose and TensorFlow MoveNet are Apache-2.0, and Apple…
- Can I build my own rep counting instead of using an SDK?Yes. Free pose primitives give you the keypoints, and you can write your own rep-counting and form logic on top. The trade-off is that this…
- Which AI motion-tracking SDK is best for physiotherapy or rehab?Kemtai is positioned for clinical, physiotherapy, and MSK use cases, citing a large exercise library plus assessment and adherence data…
- Do these workout tracking SDKs run on-device or in the cloud?The raw pose primitives run on the client. The commercial SDKs differ: QuickPose ships MediaPipe models inside your app, Sency emphasizes…
The Best Nutrition & Food Database APIs (2026)
- What is the best free nutrition API?The USDA FoodData Central API is the best free source for authoritative nutrient data — it is public domain (CC0) and needs only a free…
- Which nutrition API can parse a meal from plain text?Nutritionix and Edamam both parse free-text meal descriptions like "1 cup rice and 2 eggs" into structured nutrient data. USDA FoodData…
- Does Nutritionix have a free tier?As of 2026, sources conflict — some describe a free entry tier plus paid plans, while others say public free or non-commercial trials were…
- Which nutrition API supports barcode lookup?Nutritionix, Edamam, Spoonacular, and Open Food Facts all support barcode or UPC lookup. Open Food Facts makes it the core call and is free…
- Is Open Food Facts free to use commercially?Yes, Open Food Facts data can be used for any purpose including commercial use, but it is licensed under the ODbL with a share-alike…
Free & Open-Source Fitness APIs (2026)
- Is there a completely free fitness API with no rate limits?Yes, if you self-host. The free-exercise-db dataset (Unlicense/public domain) and wger (open source, self-hostable) are just data you…
- Which free fitness APIs let you self-host the data?For obligation-free bootstrapping, the free-exercise-db dataset (800+ exercises, public domain, static images) is the lowest-friction…
- Are Apple HealthKit and Google Health Connect free?Yes, both are free to use with no per-call fee. The catch is that they are platform-bound: HealthKit runs only on Apple devices and Health…
- Is USDA FoodData Central free for commercial use?Yes. USDA FoodData Central is U.S. government data published in the public domain under CC0, so it is free for any use including…
- What is the catch with free-tier fitness APIs?Free tiers of commercial APIs are access you borrow, not data you own. Expect hard rate limits, no support or SLA, and feature or media…
Apple HealthKit vs Google Health Connect (2026)
- Is HealthKit or Health Connect better for a cross-platform app?Neither on its own. They cover different operating systems, so a cross-platform app implements both — HealthKit on Apple platforms and…
- What review or declaration steps do HealthKit and Health Connect require before launch?Both gate your release on a declaration, not just on code. On Apple platforms you declare the health data your app touches with…
- Can a HealthKit app tell if the user denied read access?No. By design, denied read permission in HealthKit returns empty data rather than an error, so the app cannot distinguish a denial from a…
- How much history can Health Connect read by default?About 30 days prior to the first grant, unless the app requests the historical read-health-data-history permission. The Play Store also…
- Are HealthKit and Health Connect free?Yes. Both are free with no per-call fee. HealthKit is included with the Apple Developer Program (a paid membership is needed to ship apps —…
Terra vs Vital (Junction): Health-Data APIs Compared (2026)
- Is Vital the same as Junction?Yes. Vital rebranded to Junction in 2025 after an $18M raise. It is the same product; current docs live at junction.com, and the older…
- What is the main difference between Terra and Vital/Junction?Terra focuses on the widest wearable and provider coverage with a rich normalized schema, including CGM and nutrition. Vital/Junction…
- Can Terra and Vital both pull Apple HealthKit and Health Connect data?Yes. Both are server-side aggregators that also ship mobile SDKs to ingest on-device Apple HealthKit (iOS) and Android Health Connect data,…
- How do Terra and Vital pricing models differ?Terra uses a subscription plus usage credit-based model where cost scales with connected users and events. Vital/Junction uses per-user,…
- Does Vital/Junction support lab tests outside the US?Its lab and at-home diagnostics features are US-focused, spanning at-home kits, walk-in centers, and mobile phlebotomy across US states. If…
Fitbit API vs Garmin API (2026)
- Is the Fitbit API free to use?There is no published per-call fee; Fitbit is documented as free to use with the standard developer registration and approval as of 2026.…
- Can I get minute-level heart rate from both Fitbit and Garmin?Not on the same terms. Fitbit exposes heart-rate time series down to 1-second or 1-minute granularity, but other users' high-resolution…
- Can I still sign up for the Garmin Connect Developer Program?As of 2026, the Garmin Connect Developer Program is reportedly on hold for new sign-ups (verify). Existing approved accounts are said to…
- Which is better for GPS and workout data, Fitbit or Garmin?Garmin is the richer option for GPS, multisport, and workout detail: its Activity API covers over 100 sport types with GPS, heart rate, and…
- Can one app support both Fitbit and Garmin users?Yes, and plenty do — but treat it as two integrations, not one. Both use OAuth 2.0 with per-user consent, so the connect flow rhymes, yet…
Fitness API vs Building Your Own: How to Decide (2026)
- Is it cheaper to build my own fitness pose-tracking instead of using an API?Only the pose engine is free. Libraries like MediaPipe, MoveNet, and Apple Vision give you joint keypoints at no license cost, but rep…
- What do free pose estimation libraries like MediaPipe give you, and what do they not?They give you a per-frame skeleton of 17 to 33 joint keypoints in 2D and 3D, on-device and free. They do not give you rep counting, form…
- When should I buy a fitness API instead of building one?Buy when motion coaching is a feature inside a larger product, you need to ship in weeks, you lack a CV/ML team, you want a ready exercise…
- When does building your own fitness motion tracking actually make sense?Build when motion analysis is your core product or differentiator, you have in-house CV/ML talent, you need exercises or a clinical domain…
- Is there a middle ground between building and buying?Yes. A permissively-licensed wrapper over MediaPipe (QuickPose is one example) ships pre-built rep and form helpers, exposes raw landmarks,…
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