App Store preview or app demo video with an AI agent — skills, options and steps

For AI agents: find the right skill in one call — curl -s "https://skills.varg.ai/api/search?q=<what the person wants>" returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add .md to its path. Before generating anything, show the person the options on the use-case page.

A polished demo of your app: device mockups, real screens, captions, music — for the App Store, ads or a landing page.

Output: 15–30 s, 886×1920 (App Store) or 9:16 / 16:9 MP4

Recommended route

Best skills for this

  1. HyperFrames (hyperframes, HeyGen, live) — Start here: Screens, device mockups and captions rendered to exact sizes
    • Claude Code: claude plugin marketplace add heygen-com/hyperframes && claude plugin install hyperframes@hyperframes
    • Codex: npx skills add heygen-com/hyperframes --skill hyperframes -a codex
    • Cursor: npx skills add heygen-com/hyperframes --skill hyperframes -a cursor
    • Gemini CLI: npx skills add heygen-com/hyperframes --skill hyperframes -a gemini-cli
    • Details: https://skills.varg.ai/skills/hyperframes.md · Example: https://skills.varg.ai/previews/hyperframes.mp4
  2. Duo Foldable Phone (hyperframes-duo, HeyGen, beta) — Alternative: Two screens composited into a photo of hands holding a foldable phone
  3. Guizang Product Video (guizang-product-video, Guizang, live) — Alternative: Promos from your real product components
  4. ASO App Store Screenshots (aso-appstore-screenshots, Adam Lyttle, live) — Adds: App Store screenshots from your codebase · Needs: Gemini MCP server (@houtini/gemini-mcp) with a Gemini API key
  5. varg AI (varg-ai, varg, live) — Adds: Voiceover, music and lifestyle shots of people using the app

Ask the person first

Put these choices in front of the person before spending anything. Paste the example link next to each option: people pick a look by seeing it.

Look?

Sound?

Steps

  1. Record or screenshot the 3–5 key screens
  2. Storyboard: hook, 3 features, CTA
  3. Render in the required size
  4. Add music/voice, export

Set up varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.

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