Wireframe it. Then watch it run.
Balsamiq's insight was right: early ideas should look rough so people critique the idea, not the pixels. Prototyper keeps the rough sketch and adds the step Balsamiq never could: the sketch becomes a real, working interface when you're ready.
What Balsamiq does well
Deliberate low fidelity
The sketchy look keeps feedback on structure, not colors. Genuinely smart.
Speed of first draft
Faster than any design tool for a first wireframe.
Approachable for non-designers
PMs and founders actually use it.
Where Prototyper is different
The wireframe has a next step
In Balsamiq the wireframe is the end product; you rebuild it elsewhere. On Prototyper the same canvas carries the sketch and the working app an agent builds from it.
AI-native
Describe the screen in a sentence, or draw it. Your agent does the assembly either way.
A real interface, immediately testable
User-test the actual flow, not a clickthrough of static images.
One surface from idea to shipped
Sketch, working prototype, and product on the same canvas, without switching tools.
Side by side
| Prototyper | Balsamiq | |
|---|---|---|
| Fast low-fi wireframing | Yes | Yes |
| Wireframe becomes a working app on the same canvas | Yes | No |
| AI generation from a text description | Yes | No |
| Real multiplayer canvas | Yes | partial |
| Deliberately sketchy visual style | partial | Yes |
Comparison reflects our understanding as of July 2026; tell us if something is out of date.
Frequently asked questions
- Is Prototyper harder to learn than Balsamiq?
- No. Describing a screen in plain language is the whole skill.
- Can I keep things low-fi?
- Yes. Nothing forces fidelity until you ask for it.
See it run instead
The fastest way to compare is to put an agent on the canvas and watch it build. Free to start, no credit card.