DemoVexa reads your app's code and turns it into finished product demos: a script, a native voiceover in 85 languages and your real UI, animated.
Built for teams shipping software
Visual Experience Automation (VEXA)
DemoVexa is the AI layer between building software and explaining it. Three things, done for you.
DemoVexa reads your code, docs and navigation to learn your features, screens, names and workflows. Any language, any framework.
A script written for your audience, a native voiceover in 85 languages, and your real UI animated to every word.
Shipped a new screen? Rebuild the video from your latest code, or ask for a change in plain words. No re-recording.
How it works
You stay in charge of the story. DemoVexa does the scripting, narration, animation and rendering, and shows its work at every step.
Point a workspace at your code folder, in any language, plus docs and modules. DemoVexa learns your screens, names and flows.
Code in any language
Say who the video is for and what it should show, or let Claude draft the brief from your code and a one-line idea.
Or start from an idea
Claude writes a scene-by-scene script. ElevenLabs narrates it with a native-sounding voice in any of 85 languages.
Word-level timing
A build agent recreates your UI in React and animates it with Remotion, every move timed to the words being spoken.
Your brand kit applied
Export 16:9, 9:16 and 1:1 MP4s with covers and ready-to-post copy for LinkedIn, X, Facebook, Instagram, Reddit, YouTube and your blog.
1080p MP4 · covers · copy
Features
The parts that used to take a designer, a voice actor and an editor a week now happen while you review the script.
Claude reads your components and recreates the screens as animated React. No screen recordings, no blurry zooms, no real customer data on screen.
Logo, colours, fonts and the call to action, applied to every video of that product.
Queue a release's worth of videos before you leave. Wake up to rendered MP4s.
The ideas generator reads your product and suggests videos worth making: launches, how-tos, comparisons.
Covers for YouTube, LinkedIn and Instagram Reels, plus titles, descriptions and hashtags written for each platform.
Export any project as a single .demovexa file and import it on another machine, or hand it to a client.
Change pace, wording, colours or the ending in plain words. Claude edits the video's code and you preview the result in seconds.
A second template for launches, meetups and conferences: drop in photos and clips, get a branded recap.
Multilingual
Claude writes each script natively, not word for word, and ElevenLabs reads it with a native-sounding voice. Product and UI names stay exactly as they appear in your app.
Scene 5 · same line, five voices
ElevenLabsSend the invoice the moment the work is done.
0:03.4Envía la factura en cuanto termina el trabajo.
0:03.7काम पूरा होते ही इनवॉइस भेजें।
0:03.2作業が終わったら、すぐに請求書を送信。
0:03.5أرسل الفاتورة فور انتهاء العمل.
0:03.3Some of the 85 voiceover languages
Formats
Vertical and square aren't crops of the wide video. Each layout is arranged for its own screen, with captions placed where they read best.
16:91920 × 1080
YouTube, your site, LinkedIn
9:161080 × 1920
TikTok, Reels, Shorts
1:11080 × 1080
Instagram, LinkedIn and X feeds
Local-first
DemoVexa is a desktop app, not a cloud service that ingests your repository. The parts a video needs go straight from your machine to the AI you connect.
Your code, voiceovers, projects and renders live on your disk. They only leave it when you email a marketing kit.
Anthropic and ElevenLabs keys sit in the macOS Keychain, Windows Credential Manager or Secret Service.
Claude and ElevenLabs bill you directly at their prices. No mark-up, no credits to buy from us.
Only what a build needs is sent, straight to Claude through your own account. DemoVexa never sees it.
Why DemoVexa
You spent months building it. Don't spend days demonstrating it.
Pricing
Pay DemoVexa for the app. Claude and ElevenLabs bill your own accounts directly, with no mark-up from us.
Every feature, on your own product, for two weeks.
$0for 14 days
Then choose a plan, or don't.
For founders and solo marketers shipping one product.
$29/ month
Billed monthly · $290 if paid yearly
For marketing and dev-rel teams on a steady release cadence.
$79/ month
Billed monthly · $790 if paid yearly
A personal Claude login is for your own use. For work you do for clients, use an Anthropic API key.
For agencies producing videos for many clients' products.
$199/ month
Billed monthly · $1,990 if paid yearly
A personal Claude login is for your own use. For work you do for clients, use an Anthropic API key.
Prices in USD, excluding tax. Claude and ElevenLabs usage is billed by them to your own accounts. 14-day money-back on your first payment: refund policy.
No. You describe the video in a brief (or let Claude draft one), review the script and listen to the voice. Claude's build agent writes the animation code and DemoVexa renders it. You change things by asking in plain words: "slow down scene 3", "use the dark theme", "end on the pricing page".
No. DemoVexa reads your product's code and recreates its screens as animated React components, so every frame is crisp at any size, shows clean demo data instead of your real customers, and can be changed without re-recording anything.
DemoVexa runs on your computer and doesn't upload your code to DemoVexa servers. To write and build a video, the relevant parts of your code and docs go to Claude through your own Anthropic account, and, when you use an ElevenLabs voice, the script text goes to ElevenLabs through your own key (your own recordings are timed on your computer). Voiceovers and renders stay on your computer unless you email a marketing kit (uploaded for a 7-day download link) or share a workspace with your team (stored on DemoVexa's servers so teammates can sync it). Your code folder is never uploaded, and your keys are stored in your operating system's keychain.
Claude does the building, so you need a Claude Pro or Max plan (Claude Code signs in with it) or an Anthropic API key. Anthropic bills you directly, at its prices, with no mark-up from us. ElevenLabs is optional: AI voiceovers for commercial use need its Starter plan or higher. Or read the script yourself, or make videos with captions and music only.
85 (every language ElevenLabs' Eleven v3 speaks), including English, Spanish, French, German, Hindi, Japanese, Korean, Mandarin, Arabic, Portuguese, Thai and Swahili. Claude writes the script natively in that language (not a word-for-word translation) and ElevenLabs reads it with a native-sounding voice. Product and UI names stay exactly as they appear in your app.
MP4s in 16:9 (1920×1080), 9:16 (1080×1920) and 1:1 (1080×1080), covers for YouTube, LinkedIn and Instagram Reels, ready-to-post copy for LinkedIn, X, Facebook, Instagram, Reddit and YouTube, a full blog post with SEO fields, and a marketing kit (every piece as a Word file, plus the videos and covers) to download or email to anyone. Animated videos can also be rendered with a green-screen or transparent background.
macOS 13 or newer on Apple Silicon and Intel, Windows 10 and 11, and Linux (AppImage, plus a .deb for Debian and Ubuntu). The app includes its own Node.js and video renderer, so the only other thing to install is Claude Code. Git is optional.
Yes. Plans renew automatically each month or year until you cancel. Cancel any time under Plan & billing in your account; you keep the plan until the end of the period you've paid for and aren't charged again. Your projects stay on your computer either way, and you can export any of them as a .demovexa file.
Point DemoVexa at your code and have a narrated, on-brand product video before the end of the day. 14 days free.
