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DemoVexa
Early accessv0.1.0 for macOS, Windows and Linux is out

From code to demo.
Automatically.

DemoVexa reads your product's code, writes the script, voices it in 31 languages and animates your real UI into launch-ready videos. No screen recording. No timeline editing.

Start free trialDownload the app
  • 14-day free trial
  • No card required
  • Runs on your computer

Built for teams shipping software

  • SaaS founders
  • Product marketing
  • Developer relations
  • Agencies
  • Indie hackers
  • Customer education

How it works

Five steps from repository to a finished video

You stay in charge of the story. DemoVexa does the scripting, narration, animation and rendering, and shows its work at every step.

  1. 01

    Connect your product

    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

  2. 02

    Write the brief

    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

  3. 03

    Script and voice

    Claude writes a scene-by-scene script. ElevenLabs narrates it with a native-sounding voice in any of 31 languages.

    Word-level timing

  4. 04

    Claude builds the video

    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

  5. 05

    Render and publish

    Export 16:9, 9:16 and 1:1 MP4s with covers and ready-to-post copy for LinkedIn, Instagram, YouTube and your blog.

    1080p MP4 · covers · copy

Features

Everything a product video needs. None of the busywork.

The parts that used to take a designer, a voice actor and an editor a week now happen while you review the script.

Your real UI, rebuilt in code

Claude reads your components and recreates the screens as animated React. No screen recordings, no blurry zooms, no real customer data on screen.

  • Sharp at any resolution
  • Clean sample data
  • Change it without re-recording

A brand kit per workspace

Logo, colours, fonts and the call to action, applied to every video of that product.

Batch builds, overnight

Queue a release's worth of videos before you leave. Wake up to rendered MP4s.

Never stare at a blank brief

The ideas generator reads your product and suggests videos worth making: launches, how-tos, comparisons.

Covers and publish copy

A cover per format plus titles, descriptions and hashtags written for each platform.

Projects that travel

Export any project as a single .demovexa file and import it on another machine, or hand it to a client.

Edit by asking

Change pace, wording, colours or the ending in plain words. Claude edits the video's code and you preview the result in seconds.

Event recaps from your photos

A second template for launches, meetups and conferences: drop in photos and clips, get a branded recap.

Multilingual

One product. 31 languages. Voices that sound local.

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.

  • Scenes re-time themselves to each voiceover
  • Captions, title cards and the CTA translated too
  • Batch one video into many languages overnight

Scene 5 · same line, five voices

ElevenLabs
  • EN

    Send the invoice the moment the work is done.

    0:03.4
  • ES

    Envía la factura en cuanto termina el trabajo.

    0:03.7
  • HI

    काम पूरा होते ही इनवॉइस भेजें।

    0:03.2
  • JA

    作業が終わったら、すぐに請求書を送信。

    0:03.5
  • AR

    أرسل الفاتورة فور انتهاء العمل.

    0:03.3

All 31 voiceover languages

  • enEnglish
  • hiHindi
  • esSpanish
  • frFrench
  • deGerman
  • ptPortuguese
  • itItalian
  • nlDutch
  • plPolish
  • svSwedish
  • daDanish
  • noNorwegian
  • fiFinnish
  • trTurkish
  • ruRussian
  • ukUkrainian
  • arArabic
  • jaJapanese
  • koKorean
  • zhChinese (Mandarin)
  • idIndonesian
  • msMalay
  • viVietnamese
  • filFilipino
  • taTamil
  • bnBengali
  • urUrdu
  • elGreek
  • csCzech
  • roRomanian
  • huHungarian

Formats

One build. Three formats, each composed for its frame.

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

Your code stays on your computer.

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.

  • Runs on your computer

    Your code, voiceovers, projects and renders live on your disk. DemoVexa has no servers that store them.

  • Keys in your OS keychain

    Anthropic and ElevenLabs keys sit in the macOS Keychain, Windows Credential Manager or Secret Service.

  • Bring your own keys

    Claude and ElevenLabs bill you directly at their prices. No mark-up, no credits to buy from us.

  • Nothing goes to DemoVexa

    Only what a build needs is sent, straight to Claude through your own account. DemoVexa never sees it.

Pricing

Simple plans. Your keys, your costs.

Pay DemoVexa for the app. Claude and ElevenLabs bill your own accounts directly, with no mark-up from us.

Free trial

Every feature, on your own product, for two weeks.

$0for 14 days

Then choose a plan, or don't.

Start free trial
  • 3 videos
  • 1 workspace
  • All 31 languages
  • 16:9, 9:16 and 1:1 renders
  • No card required

Solo

For founders and solo marketers shipping one product.

$24/ month

$290 billed yearly · save $58

Choose Solo
  • 20 videos a month
  • 3 workspaces
  • 2 devices
  • Batch builds up to 5
  • Project export and import
Most popular

Team

For marketing and dev-rel teams on a steady release cadence.

$66/ month

$790 billed yearly · save $158

Choose Team
  • 60 videos a month
  • 10 workspaces
  • 3 seats, 2 devices each
  • Batch builds up to 25
  • Priority email support

Agency

For agencies producing videos for many clients' products.

$166/ month

$1,990 billed yearly · save $398

Choose Agency
  • 200 videos a month
  • Unlimited workspaces
  • 10 seats, 2 devices each
  • Unlimited batch builds
  • Client hand-off via .demovexa

Prices in USD, excluding tax. Claude and ElevenLabs usage is billed by them to your own accounts.

Compare every plan in detail

FAQ

Questions, answered

Something else? Write to hello@demovexa.com.

Do I need to edit video, or know Remotion?

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".

Is it a screen recorder?

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.

Does my code leave my computer?

DemoVexa runs on your computer and never uploads your code, voiceovers or renders 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 the script text goes to ElevenLabs through your own key. Your keys are stored in your operating system's keychain.

What else do I pay for besides DemoVexa?

You bring your own Anthropic and ElevenLabs accounts, so their usage is billed to you directly, at their prices, with no mark-up. You can also sign in with a Claude subscription instead of an API key.

Which languages can the voiceover use?

31, including English, Spanish, French, German, Hindi, Japanese, Korean, Mandarin, Arabic and Portuguese. 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.

What do I get at the end?

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, Instagram and YouTube, and a full blog post with SEO fields.

Which platforms does the app run on?

macOS, Windows 10 and 11, and Linux (Ubuntu or Debian). You need Node.js 20.9 or newer; DemoVexa's launcher installs everything else, including the video renderer.

Can I cancel any time?

Yes. Plans are month to month or yearly; email support@demovexa.com to cancel. Your projects stay on your computer either way, and you can export any of them as a .demovexa file.

Your next release deserves a video.

Point DemoVexa at your code and have a narrated, on-brand product video before the end of the day. 14 days free.

Start free trialDownload the app