AI reaction videos for apps

Create TikTok-style reaction videos for your app.

Upload a selfie or AI avatar, add your app demo, and ReacTok generates a scroll-stopping vertical video. No filming, no actors, no editing.

No filming
AI does it for you
In minutes
Not hours
Made for TikTok
9:16, ready to post
★★★★★ Built by indie hackers, for founders & marketers
3–5s AI reaction
Your creator reacts
I can't believe I didn't know this app existed… 😳
0:03 / 0:05
Your app demo
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Every video opens with a short AI reaction, then transitions into your app demo.
How it works

Three simple steps.

If you can fill out a form, you can make reaction videos for your app.

1

Upload your app demo

Your app is the star of the show:

The demoDrop in a screen recording or demo clip of your app.
The descriptionA quick line about what your app does. It fuels the AI hooks.
2

Build your reaction

Two ingredients, a face and a performance:

The faceUpload a selfie or generate an AI avatar.
The motionUpload a reaction clip, or paste a TikTok link and we'll transfer its motion onto your face.
3

Generate & post

We stitch it all into one video:

The hookWrite an on-screen caption or let AI generate one for you.
The videoPreview the reaction, approve it, and get a polished 9:16 video to post.

Made a reaction you love? Save it to your library and reuse it on your next video. No waiting on regeneration.

Examples

See ReacTok in action.

Reaction videos for every kind of app, made in a few clicks.

Habit tracker
AI assistant
Finance app
Study app
Note-taking app
Fitness app
Make one like these
Built for humans & agents

Click it, or automate it.

Make one video by hand, or wire ReacTok into your stack and let an agent produce them for you.

For humans

A few clicks in the web app and you're done.

  • Upload your app demo
  • Pick or generate a creator
  • Preview & approve the reaction
  • Download or schedule your post

For AI agents

Drive it from the CLI, API, SDK, or an MCP server.

$ reactok generate --product 42 --method prompt \ --prompt "founder reacts to the dashboard" --wait Reaction generated Stitched onto app demo Video ready: https://reactok.app/v/9f2c…

Works wherever you work.

Web app

Generate with a few clicks in the browser. No setup required.

CLI

Batch and script video generation right from your terminal.

API & SDK

Integrate ReacTok into your own product or backend.

AI agents

Let Claude, Cursor & other agents create videos via MCP and skills.

Works with your favorite tools
Claude Code Cursor Codex n8n Zapier Make
CLI, SDK & agents guide API reference
Everything you need

A full reaction-video studio.

AI reaction generator

Describe the reaction and get a natural, on-camera clip that hooks the scroll.

Bring your own face or use an AI avatar

Upload a selfie to star in your own videos, or spin up unlimited AI creators.

Auto-stitched app demo

Your screen recording is transitioned in automatically after the reaction. No editor needed.

AI hook writer

Generate scroll-stopping on-screen hooks tailored to your app in one tap.

Reusable reaction library

Loved a reaction? Save it and remix it across your catalog instead of regenerating.

Schedule & publish

Plan your posts on a content calendar and publish to TikTok, Reels & Shorts.

HD & watermark-free

Crisp vertical exports that are yours to post anywhere. No badges, no branding.

Preview before you commit

Review the reaction first and regenerate if it's not perfect, then finalize.

Vertical 9:16, every time

Perfectly framed for TikTok, Reels & Shorts. No cropping or reformatting.

Pricing

Plans that scale with you.

Every plan includes the full studio plus CLI, API & agent access. Pay for the videos you need. Each finished video uses one.

Starter
Perfect for getting started
$9.99/month
$3.33 per video
  • 3 videos/month
  • HD, watermark-free exports
  • Unlimited AI avatars
  • Reusable reaction library
  • CLI, API & AI-agent access
  • Vertical 9:16 (TikTok, Reels & Shorts)
Get started
Max
For power users
$79.99/month
$2.67 per video
  • 30 videos/month
  • HD, watermark-free exports
  • Unlimited AI avatars
  • Reusable reaction library
  • CLI, API & AI-agent access
  • Vertical 9:16 (TikTok, Reels & Shorts)
Get started
Ultra
For high-volume operators
$129.99/month
$2.60 per video
  • 50 videos/month
  • HD, watermark-free exports
  • Unlimited AI avatars
  • Reusable reaction library
  • CLI, API & AI-agent access
  • Vertical 9:16 (TikTok, Reels & Shorts)
Get started

Billed monthly. Cancel anytime. Each finished video uses one credit.

FAQ

Questions? We've got answers.

Can I upload my own avatar?
Yes. Upload a selfie to star in your own reaction videos, or generate an AI avatar if you'd rather not be on camera.
How long does it take to generate a video?
Most videos are ready in a few minutes. You can preview the reaction, regenerate if needed, then finalize.
Can I generate an AI creator?
Absolutely. Spin up unlimited AI avatars and mix and match faces until the vibe fits your app.
Do I need to film or edit anything?
No. You bring an app demo clip and a short description; ReacTok produces the on-camera reaction and stitches everything into a finished vertical video.
Will this work for mobile and web apps?
Yes. Any screen recording or demo clip works: mobile apps, web apps, or SaaS dashboards.
What counts as a "video"?
Every finished video uses one credit, whether it's a fresh AI generation or one made from a reaction you've already saved. Regenerating a preview uses another. Saving reactions to your library is free.
Can I use the CLI, API or AI agents?
Yes. Every plan includes programmatic access via the CLI, REST API, Python SDK, and an MCP server for AI agents like Claude and Cursor.
Can I cancel anytime?
Yes. Plans are billed monthly and you can cancel whenever you like from your billing portal.

Your next viral app video is one click away.

No crew, no camera, no editing skills. Just your app.

Create my first video