Give your video a voice.
Right on your Mac.

Free · v0.1.1 · macOS 13+ · Apple Silicon

VoxFlow
ProjectsSettings
Trailhead launch⋯
Synthesizing chunks…0%↶↷+ New⤓ ExportSave
▣ VideoReplace
trailhead-broll.mp4 0:48Updated 4 Oct at 0:25
✎ Script6 chunks · 0:21
Welcome back. Today we're building a cabin by the lake, one log at a time. First, the foundation: stone, gravel, and a lot of patience.
VoiceRecordAudioChunks 6
Delivery styleYouTube Explainer⌄
VoiceSarah · American Female⌄
▷ Preview your script
⌄ AdvancedPer-chunk
✦ Generating… 0%
☐ Fit to video☐ Natural fillers

Voice 0:21 · Video 0:48, 0:27 under

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VIDEO
VOICE
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▸ TIMELINE AND SCENES

Write it. Hear it.

Type a script, pick a voice, and the narration is ready in seconds. All of it is generated on your own Mac.

Real voice output · generated on a Mac

Voice

Piperfast, light

Kokoronatural

Qwenemotion

9 voices · 3 engines

Script

Welcome back. [pause 0.2 s]Today we're building a cabin by the lake, one log at a time.

74 characters · 0 credits · on-device

Re-record as often as you like

Every take on VoxFlow costs the same as the last one: nothing. Change a word, regenerate, repeat.

VoxFlow · on your Mac

0credits used

Cloud voice tools

0characters billed

Illustration. Cloud tools typically bill per character or per minute of generated audio.

Works offline

No connection needed once VoxFlow is installed. Write, generate and export on a plane.

Voices generated on-device

VoxFlow's voice engines run on your Mac, so your script never leaves the machine.

Your files stay on your Mac

Projects are saved locally, and every export lands wherever you pick in the save dialog.

Built for the way you make videos

Write the script, generate the voice, line it up on the picture, and export. All of it runs on your own machine.

[01]VOICES

Voices that live on your Mac

Choose from local engines like Piper, Kokoro and Qwen. Every line is generated on Apple Silicon; nothing is sent anywhere to be spoken.

[02]TIMELINE

Every line in its place

Each generated chunk becomes a clip. Drop it on the video's timeline, nudge it into sync, and play it back. Or turn on Fit to video and the pace adjusts so the voiceover runs as long as the picture.

[03]MULTI-TRACK

Music and effects underneath

Layer music and sound effects on their own tracks beneath the voiceover, then balance each one by ear.

[04]OFFLINE

No connection needed

No account, no cloud, no per-character credits. Once installed, VoxFlow works on a plane.

[05]DELIVERY

Delivery styles

Start from YouTube Explainer, Documentary, Audiobook and more, or make your own: rate, pitch, warmth, punch, volume and pause. With Qwen, describe the emotion too. Natural fillers can add the odd “hmm” or “uh” at long pauses, in the same voice.

[06]FFMPEG

A real video file out

When the timeline sounds right, FFmpeg renders your video and mixed audio into a finished .mp4.

[07]WHISPER

Or record it yourself

Prefer your own voice? Record a take and Whisper turns it into your script, transcribed on your Mac.

[08]FREESOUND

A sound library built in

Search Freesound's 600,000+ Creative Commons sounds from the Audio tab and lay them under your voiceover. Needs a free Freesound key.

One line, three engines.

Piper, Kokoro and Qwen all run on your Mac. Pick a voice, press play, and hear exactly what lands on your timeline.

Piper
Kokoro
Qwen

“Welcome back. Today we're building a cabin by the lake, one log at a time.”

Amy · Piper · en_US · generated on-device, unedited

Give your next video
a voice.

Free · macOS 13+ · Apple Silicon