Quiz result
Your result: track movement with the camera
Your answers point to camera-based pose tracking: reps, form and joint angles come from the camera, not a wearable. It is a starting point from the eight-question quiz, not a verdict on any product.
Disclosure: KinesteX, one of the products listed on this page, funds this site. It is listed alphabetically on the same terms as every other option, and nothing here ranks it.
When this fits (our judgment)
- You need movement itself (reps, form, range of motion), which wearable summaries do not carry.
- Your users have a phone or laptop camera and no wearable.
What to check first (our judgment)
- An open pose model gives you keypoints; rep logic, form rules and per-exercise tuning are yours to build.
- A motion SDK does more of that for you, under its own pricing and terms.
The options, and what this site’s sources say
Pose models (free, you build the rest) and motion SDKs (sold), from this site's sourced cost model, alphabetically. KinesteX funds this site; it is listed on the same terms as the others:
- Free within the Apple SDK with no model file to ship, running locally with no network and no per-call cost — but on Apple platforms only, so a cross-platform product still needs a second model. Everything above the joints is yours to build.
- Cost model: Free.
From The Best AI Workout & Motion-Tracking APIs (2026), where each statement is sourced and dated.
KinesteX(funds this site)
- This site's own product — see disclosure on linked page. KinesteX publishes no price list; the vendor describes usage-based per-active-user pricing, so budgeting needs a sales conversation.
- Before you ship: Access runs through a contact form and an issued API key — no self-serve signup.
- Cost model: Contact sales.
From KinesteX vs Sency: Which Motion Tracking SDK?, where each statement is sourced and dated.
MediaPipe Pose Landmarker (BlazePose)
- Free, Apache-2.0, on-device, no per-frame cost — 33 landmarks per frame and nothing else. The keypoints are the commoditized part; rep logic, per-exercise form rules, calibration, content, and cross-device tuning are the recurring cost, and they recur as maintenance rather than a one-time build.
- Cost model: Free.
From KinesteX vs MediaPipe: Which Layer Do You Want to Own?, where each statement is sourced and dated.
- A coaching SDK you can start on today without a sales call: a free SDK key, a free tier for a small number of monthly active devices, and paid plans by monthly active device published on its pricing page, with every SDK feature on every plan. iOS, Android and React Native; exercise programming and UI stay on you.
- Cost model: Free tier.
From The Best AI Workout & Motion-Tracking APIs (2026), where each statement is sourced and dated.
- Sency publishes per-user plans, but on two pages that disagree about whether its first active users are free or covered by a paid monthly fee, and sign-up runs through a contact form, so confirm the terms in writing. Models download from Sency's server at configuration.
- Before you ship: Sign-up runs through a contact form that leads to a call, and Sency's Terms of Use put commercial or production use under a separate paid service agreement.
- Cost model: Usage-based.
From The Best AI Workout & Motion-Tracking APIs (2026), where each statement is sourced and dated.
- Free and Apache-2.0 for the single-person models, 17 2D keypoints, Lightning tuned for latency. One licensing gap to close yourself: the MultiPose model card we read carried no license line, so confirm it independently before shipping commercially.
- Cost model: Free.
From Pose Estimation Model Licenses: Which Can You Ship Commercially?, where each statement is sourced and dated.
Read next
If one answer were different
- Bluetooth sensors, read directly — Your answers point to reading the sensors themselves over Bluetooth Low Energy, using the Bluetooth SIG's standard GATT profiles.
- HealthKit and Health Connect — Your answers point to the two platform health stores, one per app: HealthKit on iPhone and Health Connect on Android.
- The device makers' own APIs — Your answers point to integrating each device maker's own cloud API, one OAuth integration per brand.
A free quiz from AIFitnessAPI. Nobody pays for placement here; the site is funded by KinesteX, and any page featuring it says so up front.