RunDemo vs Loom
Loom records your screen while you narrate. RunDemo generates the whole demo for you, an AI agent drives your product and a synchronized voiceover explains each step. Here is the honest comparison.
Both tools end with a video of your product, but they get there in opposite ways. Loom is a screen recorder: you press record, click through your product, and talk. RunDemo is a generator: you describe your product and pick a voice, then an AI agent opens your product in a real browser, performs the flow, and lays a perfectly timed voiceover over it, no recording, no editing timeline.
If you make the same demo often, or you want it polished without re-recording every time a screen changes, that difference matters. Below is where each one wins.
| Feature | RunDemo | Loom |
|---|---|---|
| How the video is made | AI agent drives your product; voiceover generated and synced automatically | You record your own screen and speak live |
| Editing | Edit the transcript; the video re-renders in seconds | Trim clips; re-record to change what is said or shown |
| Consistency across demos | Repeatable, on-brand, no "ums" or mistakes | Varies with each take |
| Updating when the UI changes | Re-run against the live product | Re-record the whole video |
| Voiceover | Studio-quality AI voice, choose from several | Your own voice |
| Best for | Polished, repeatable product demos and tours | Quick async messages and personal walkthroughs |
| Setup | Paste a URL, describe the product | Install the app or extension, press record |
| Free tier | Yes, first demos free | Yes, capped recordings |
Where Loom is the better choice
Loom is excellent for what it was built for: fast, human, asynchronous communication. A quick "here is the bug I found," a personal onboarding note to a new teammate, or a founder talking through a Figma file all feel warmer as a genuine human recording. If the value is you talking, use Loom.
Where RunDemo is the better choice
RunDemo is built for demos you make repeatedly and want to look polished: a product tour on your homepage, a feature announcement, a sales follow-up, an onboarding walkthrough. Because the AI drives your real product and generates the narration, every demo is consistent, mistake-free, and easy to update, you fix a sentence and re-render rather than re-recording a nine-minute take.
It is also faster at scale. Producing ten feature demos in Loom means ten recording sessions. In RunDemo it means ten prompts.
The editing model is the real difference
With a screen recorder, the video is the source of truth, so every change means touching the footage. With RunDemo the transcript is the source of truth. Change a line and the browser re-performs and the voice re-renders around it in seconds. That is what makes RunDemo demos cheap to keep current as your product evolves.
Frequently asked questions
Is RunDemo a Loom alternative?
Do I need to record anything with RunDemo?
Can I use my own voice like in Loom?
What happens when my UI changes?
Turn your product into a demo video
Describe it, pick a voice, and RunDemo records a narrated walkthrough of your real product. No screen recording, no editing timeline.
Generate a demo freeFree to start. No credit card. First demo on us.Last updated 2026-08-07