What it does
Justinmind is a desktop interface design and prototyping tool for web and mobile apps. It supports form inputs, gestures, conditional interactions and simulated data. The Free edition allows unlimited screens in one project and image exports; paid editions add advanced interactions, collaboration and specifications.
Pick the edition around the prototype's behaviour
| Edition | What it adds |
|---|---|
| Free | UI design, working input forms, vector tools and PNG, JPG or SVG exports |
| Standard | Advanced interactions, variables, mobile testing and shared UI libraries |
| Professional | Data simulation, user flows, masters and interactive HTML export |
| Enterprise | Requirements management and Jira or Azure DevOps integration |
Free supports one project with unlimited screens. The paid plans remove that project limit. Standard and Professional can be bought by subscription or as a perpetual licence; a perpetual purchase includes updates and support for the first year, with a separate renewal charge afterwards.
Start with Download Free, then build a screen from the supplied UI components. A registration prototype can use working form fields; if it needs conditional responses or shared variables, choose the paid interaction features. Professional's HTML export is the relevant option when you need an interactive deliverable outside the editor.
Strengths
- Free allows unlimited screens within one project
- Paid licences are available as subscriptions or one-time purchases
- Professional can export interactive HTML
Watch out for
- Free is limited to one project
- Data simulation and HTML export require Professional or higher
- Perpetual licence updates and support need renewal after the first year
Best for
- Designers prototyping input-heavy web and mobile flows
Sources
- Justinmind design and prototyping (Oct 27, 2026)
- Justinmind pricing and licence FAQ (Oct 27, 2026)