Product demo videos, built from your screenshots
Send Kario screenshots of your app in the order someone moves through it. It rebuilds each screen as layers and animates what happens on it: rows selected, an invoice built, a payment arriving.
Below is a demo it made for Fernbill, an invoicing app, from six of its screens.
Try it today · Updated October 23, 2026
What happens in the Fernbill demo
- Fourteen time entries are selected, and the rows move into the invoice as its four line items.
- The total counts up to $3,640.00. It's a text layer, not a recording, so a new price is one edit.
- The client pays on her phone, and the desktop marks the invoice paid in the same frame.
- The payment is matched to the bank account, and a late invoice gets reminders on day 1, 7 and 14.
- There's no voiceover. The story is told by the app's own text, its sounds and the music, so it works with the sound off.
Demo video or screen recording?
| Screen recording | Kario demo | |
|---|---|---|
| What's on screen | Your live app, exactly as it is | Your screens rebuilt as layers and animated |
| Changing copy or a price later | Record again | Edit the layer |
| Pacing | Real time, with every pause and load | Only the steps that matter, timed to music or a voiceover |
| Voiceover | Recorded live, and again for every change | American and British voices, other languages or your own recording, with the animation timed to each word |
| Formats | One aspect ratio per recording | 16:9, 9:16, 1:1 and 4:5 as boards in one project |
A screen recording is still the right call for a long walkthrough or a live tutorial.
What to give Kario
- Screenshots of the screens in the flow, in order.
- Your website URL, for copy, colours and type.
- The one thing a viewer should remember from the demo.
- The length: around 20 seconds for a feature post, 45 to 90 for a landing page.
- A voice, if you want it narrated: describe it (calm, upbeat, British) or attach your own recording.
Related
- Website to videoKario turns your landing page into a launch video: your headline, your section titles, your colours and type, your app screens.
- AI product launch video generatorBrief Kario on what you're launching and get a launch video built from your real product: editable scenes, layers and keyframes, exported to MP4 or a transparent MOV or WebM.
- AI explainer video generatorKario writes the script, records the voiceover and animates an explainer timed to it, as an editable project with scenes, layers and keyframes.
- PricingMonthly plans, or a single video to try it.