Exercise video was the best option. Until now.

Most apps ship a looping clip for every exercise, shot from one angle in one style. Repglyph renders the figure live on the device, so it behaves like part of your interface, not a file you embed.

Video & GIFs Repglyph

CameraOne fixed angleAny angle. Drag, pinch, orbit

LookBaked into the footageYour accent, dark or light, live

MusclesPainted on, if at allGlow by muscle, in time with the rep

PlaybackPlay and loopPlay, pause, scrub, slow lowering phase

SizeA file per exercise, per angleOne 0.5 MB file for the whole library

PlatformsA media player everywhereNative renderers: SceneKit, Filament, three.js

Form you can trust

Every pose is held to a written, cited standard.

Every pose is validated against cited professional and clinical standards. Before a pose ships, it is measured against our written form standard, which draws on 273 references: ACE, NSCA, ACSM and NASM coaching guidance, AAOS and CDC joint-range norms, and peer-reviewed biomechanics. Every threshold names its source. Where sources disagree, both values are recorded and the one we chose is marked.

We also check the figures against people. Joint angles from licensed motion-capture datasets (CMU, UI-PRMD and the ARKit-versus-Vicon set from Reimer et al., 2022) are compared with the rig, and any keyframe that drifts outside the recorded range gets corrected. All of this is written up in a clinical form report, which is a draft awaiting clinician review.

Where we couldn't find a source, we say so. No peer-reviewed joint angles exist yet for the carry family's sled push and pull, so that family is still marked partial.

273references in the clinical form report

2,633automatic checks across 183 movement and variant rows on three bodies, at 32 points in every rep, with 0 failures

53/54movement families verified; 1 partial (carry)

ROM · hip extensionAAOSCDC
≤ 20°
ROM · knee flexionAAOSCDC
≤ 145° active
wrist.rangeAAOSRyu 1991
Extension ≤ 70° active. About 90° only for flat-palm floor support. ≤ 15-20° when holding an implement.
squat.shinMyer 2014Fry 2003house
Forward shin tilt 15-40° with the heels flat
pushup.handsACENASMhouse
Wrist within 3 cm of directly under the shoulder

Search the library.

Every thumbnail below was rendered by the same web renderer from the same rig file. Open any of them to see it live.

Make it look like your app.

The working muscles glow in time with the rep: brighter on the lift, softer on the way down, with a pulse at the top. Secondary muscles glow dimmer. Switch the stage or pick an accent, and the glow, the suit seams and the stage ring follow. Nothing is rendered ahead of time.

Stage

Accent

Body

The live demo loads when you scroll here

3D or 2D, from the same data.

The free core turns the same movement definitions into crisp SVG figures for lists, watch faces, print and email. Choose flat or monoline, light or dark, or round thumbnails that work at 56 pt. Each 2D figure here is inline SVG, shown with its file size.

The live 3D renderer: a barbell squat with the quads glowing coral. — 3D live renderer, iOS · Android · web

Flat · light 7.2 KB

Flat · dark 7.2 KB

Monoline · light 7.3 KB

Monoline · dark 7.3 KB

Squat 7.2 KB

Deadlift 7.2 KB

Pull-up 6.2 KB

Round thumbnails: tighter crop, fuller limbs and primary muscles only, so they still read at list size.

Native on every platform you ship.

Each platform has its own native renderer reading the same rig file, with the same lighting, framing and interaction model, so a squat looks the same in your iOS, Android and web apps.

struct ExerciseCard: View {
    @StateObject private var figure = FigureController()

    var body: some View {
        FigureView3D(catalogID: "D04AC939", muscle: nil,
                     body_: "female", controller: figure)
            .frame(height: 320)
    }
}

@Composable
fun ExerciseCard() {
    RepglyphFigure(
        catalogId = "D04AC939",
        modifier = Modifier.fillMaxWidth().height(320.dp),
        body = "female",
    )
}

import { loadRigs, createFigureViewer } from '@repglyph/three';

const rigs = await loadRigs('/repglyph_rigs.json.deflate');

createFigureViewer(document.querySelector('#stage')!, {
  rigs,
  exerciseId: 'D04AC939',
  theme: 'dark',
});

60 fps target. So far it has been measured on the iOS Simulator, the Android emulator and desktop Chrome, where it holds 60 fps while you drag it. We'll publish numbers from real phones once we've measured them.

Built in Setwise first.

Setwise is our own workout app, and Repglyph started there. Every exercise opens on a live figure you can rotate and scrub, and the lists use 2D thumbnails from the free core. This page runs the same renderer on the same file Setwise ships.

448 Setwise catalogue exercises mapped to a rig
The 3D figure on the exercise screen, 2D thumbnails in lists
Follows the system Reduce Motion setting and dark mode

Pricing

Early access, in three tiers.

We haven't set prices yet. Join the waitlist or get in touch, and we'll work out terms with early partners directly.

Core & 2D SVG

Free

Flat and monoline SVG figures
Animated SVG and round thumbnails
Runs in Node, browsers and Workers
MIT code, CC0 movement data

Coming soon

3D SDK

Early access

Live figures on iOS, Android and web
The full rig library, kept up to date
Theming, accent colour, muscle glow
Offscreen thumbnail rendering

Join the waitlist

Enterprise & white-label

Contact us

Your brand, your suit, your stage
Custom movements for your catalogue
Catalogue mapping to your exercise IDs
Priority support

Contact us

Get early access.

Tell us which platforms you ship on. We'll let you know when the SDK opens up. We only email about Repglyph.

Questions.

Is this medical advice?

No. Repglyph shows exercise technique. Its poses are validated against cited professional and clinical standards, but they don't replace a coach, physiotherapist or doctor, and they aren't fitted to any individual.

What does “form-checked” mean, exactly?

An automated suite samples every movement, variant and body type and measures joint angles, contacts, balance, grip width and range of motion against our written form standard. Each check passes, fails or is exempt with a written reason. The current run is 2,633 checks with 0 failures, and 53 of the 54 movement families are verified. The figures are also compared with joint angles from licensed motion-capture datasets.

How big is it?

The rig file for the whole library is about 0.5 MB compressed. It holds every movement, body and prop. On the web, the renderer is a small module on top of three.js. On the web it can also load one exercise at a time, about 15 KB each, so a page only fetches what it shows.

Does it work offline?

Yes. The rig file ships with your app and everything renders on the device. No network calls are needed to show a figure.

Can I map it to my own exercise catalogue?

Yes. Figures are looked up by catalogue ID, and Setwise maps hundreds of its own IDs that way. Mapping your catalogue, and adding custom movements, is part of early access.

What about accessibility?

Every figure has generated alt text. The viewer works from the keyboard (arrow keys, Space, Home) and respects reduced-motion settings on iOS, Android and the web, which turns off the intro, the auto-orbit, inertia and other decorative motion.

When can I use it, and what will it cost?

The SDK is in early access, and pricing hasn't been decided. Join the waitlist and we'll be in touch.

Every exercise, in living 3D. Form-checked.