UtterFlow

Bring your Persona and captions together in visionOS. UtterFlow turns your voice or prepared scripts into readable spatial captions for demos, tutorials, presentations, accessibility, and thinking out loud.

SYNC AUDIO
Turn a screen recording into a finished walkthrough without a separate microphone or editing pass.

Speak naturally in UtterFlow, then use Sync Audio to bring your voice together with the screen recording you choose. Keep your explanation, live captions, and Persona in one clear video, ready to preview, trim, and share.

PERSONA, IN THE MOMENT
Open your Persona in a clean, resizable window. Keep Persona by itself, or add the same live-caption or Script word stream directly to the window. Add live captions with Persona or keep captions in their own window.

Attached captions can use a Clear background, fully opaque Black, or your own Brand color. Brand can add a glass finish, and an optional setting applies the same surface to the independent Show Captions window.

CAPTION
Start live captioning from one focused screen. Open the separate Show Captions window, review your most recent capture, or turn it into a prepared script. Choose caption Style, Size, and Lines directly from the Caption page, even while live captions are running. Custom words help with product names, technical language, and phrases you use frequently.

SCRIPT
Write, paste, or create a script from a recent capture. Organize prepared material, play it with voices available on your device, and present the word stream through Show Captions or alongside your Persona.

FLEXIBLE OUTPUTS
Use Persona by itself, keep captions in their own window, or combine them. The outputs remain movable and resizable so you can arrange a tutorial, app demo, presentation, or accessibility setup around the work in front of you.

CREATOR TOOLS
Creator adds two deliberate, non-destructive exports for supported 16:9 Clean Voice movies. Create a separate 4K video while leaving your original movie unchanged. When you are preparing App Store media, create a separate App Store Connect-ready video that meets Apple’s video requirements. Recent Audio adds inline playback, scrubbing, and a source-derived waveform.

PRIVACY
UtterFlow has no account system, advertising SDK, analytics SDK, or developer-operated transcription server. Speech recognition and Persona presentation use Apple system frameworks and available device capabilities. Persona video is displayed live; UtterFlow does not store or upload its frames.

Live captions in the main app and full transcription are available without a purchase. Free users can try caption output with a daily word allowance.
UtterFlow Pro removes the daily caption-output limit. One-time purchase; no subscription.
UtterFlow Creator includes every Pro capability, 4K video export, an App Store Connect-ready video export, and Recent Audio tools. One-time purchase; no subscription.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://utterflow.app/privacy