Telestrator

Turn your iPhone or iPad into a professional telestrator. Draw live over images and video, stream overlays to CasparCG or any browser source, no extra hardware needed.

Telestrator turns your iPhone or iPad into a professional broadcast drawing tool. Annotate live over images and video with your finger, and send the output straight to your production system.

Draw with precision Pen, highlighter, box markers, arrows, and location pins all colour-customisable. Undo, erase, or fade-clear with a tap.

Built-in broadcast server The app runs its own server directly on your device. Connect CasparCG, OBS, vMix, or any system that supports a browser source, just enter the URL. No cloud, no subscriptions, no extra hardware.

Two output modes • Overlay: transparent background, drawings only. Perfect for keying over live video in your production switcher. • Composite: full 1920×1080 output with background image, drawings, and secondary image side-by-side.

10-slide deck Load up to 10 images or videos. Navigate with NEXT+KEEP (preserve drawings) or NEXT+CLEAR. Reset to slide 1 at any time.

Remote control Integrate with any automation system via simple HTTP endpoints: /next-keep, /next-clear, /reset. Trigger outgoing API calls on every slide change.

Record your sessions Capture your telestration as video, saved directly to your photo library. Vertical mode records both 9:16 and 16:9 simultaneously.

Vertical & horizontal Work in portrait for mobile-first content or landscape for traditional broadcast. The app handles orientation, rotation, and output scaling automatically.