Justinmind

Overview

Justinmind is a wireframing and prototyping tool for web and mobile app interfaces, from initial layouts to detailed simulations. It suits teams that need to demonstrate interface behavior as well as appearance; its strongest case is the combination of no-code interactions, shared design assets and collaboration.

It is less compelling for a solo user who needs several projects on a free plan: unlimited screens do not remove the one-project cap. Moving beyond that cap means paying per editor each month.

Key features

Justinmind lets designers build web interactions, mobile gestures, action sequences and conditions without code. That gives teams a way to show how a flow responds, rather than relying on static screens. Interactive forms, data lists and grids extend that approach to interfaces with inputs or structured content.

Multiple users can edit the same prototype simultaneously, and version control tracks changes. UI kits, synchronized shared components, templates and masters support consistency across projects. These capabilities are most useful when designers, analysts and developers need to share assets and coordinate handoff; they may be more than an individual needs for a small, single-project exercise.

Prototypes can be exported as interactive HTML, while assets can be exported as SVG or PNG. The API can generate specification assets. Integrations include Figma, Adobe XD, Sketch, JIRA, Azure DevOps and user-testing tools, though access to some integrations varies by plan.

Pricing

Justinmind has a free plan and paid plans priced per editor per month. The 10-day trial offers a short evaluation window; the listed monthly prices are:

Plan	Price	What it includes
Free	free	One project, unlimited screens and viewers, UI design and wireframing, interactive input forms, vector design, and PNG, JPG and SVG export.
Standard	$19 a month	Unlimited projects, advanced interaction design and collaboration, mobile device testing, and shared UI libraries.
Professional	$29 a month	Unlimited projects, data simulation, user flows, HTML export, user-testing integration, and custom branding.
Enterprise	$59 a month	SAML single sign-on, shared fonts, document export, requirements management, JIRA and Azure DevOps integration, and priority support.

Free is a practical starting point for a one-project prototype, with no screen or viewer cap. Standard is the step up for teams that need multiple projects, collaboration tools or mobile device testing. Professional adds data simulation and HTML export, so it fits work that needs richer demonstrations or user-testing integration. Enterprise adds identity, requirements and support capabilities for larger organizations. Every paid price is per editor, so team costs rise with editor count; the cheaper plans omit higher-tier capabilities such as data simulation and Enterprise integrations.

Platforms

Justinmind supports Android, iOS, macOS, Windows and web, with API and self-hosted options also indicated. Deployment options include cloud, self-hosted, desktop and mobile. A desktop app is available, making the product relevant to teams working across device types and deployment preferences.

Who it's for

Design teams, business analysts and developers are the clearest fit: they can build interactive UI concepts, reuse shared components and support design handoff in one workflow. Small teams can start with the free one-project allowance, while mid-market and enterprise teams have paid plans with collaboration and administration capabilities. Compliance includes GDPR and PCI DSS; the privacy policy says the company takes reasonable measures to protect personal data and will notify materially affected users of a breach within 72 hours. Payment data goes directly to Braintree rather than being collected by Justinmind.

Pros and cons

Pros

• Code-free interactions, gestures and conditions make prototypes more expressive than static wireframes.
• Simulated forms, lists and grids help represent data-heavy or input-driven screens.
• Simultaneous editing, change tracking and reusable UI assets support team workflows and handoff.
• The free plan allows unlimited screens and viewers, which is useful for developing and sharing a single project.

Cons

• The free plan's one-project limit makes it restrictive for anyone managing multiple concepts or client projects.
• Data simulation and HTML export require Professional, while Enterprise is needed for SAML single sign-on and requirements management.
• Per-editor monthly pricing can become a meaningful cost as a team adds paid users.

Alternatives

Consider Fluid UI if its free-forever account or $8.25 a month Solo plan better suits your budget; it supports Android, iOS, Linux, macOS, web and Windows.

Mockplus is worth comparing if a free plan for 10 users and 10 active projects is more useful than Justinmind's one-project free tier.

ProtoPie may suit a smaller cloud-based start: its free plan allows two saved prototypes, eight scenes per prototype and 50MB of cloud storage.

UXPin is an alternative with a limited free plan after a 14-day trial, including two prototypes and 50 AI credits.

Lunacy is a free alternative for users whose needs fit within 10 cloud documents, 10 document editors or exporters, and 30 days of version history.

Figma Slides is another freemium option, with a Starter plan offering limited access to Figma products, unlimited drafts, and AI credits.

Marvel may be preferable for a minimal free setup of one user and one project; its Pro plan is $12 a month billed yearly for one user and unlimited projects.

Proto.io is another freemium prototyping option.

Browse UI design tools, Wireframing Software, Web Design Software, Prototyping Software, Developer Handoff Software or Game UI Design Software to compare category options.

Verdict

Justinmind is a strong choice for product teams that need interactive web and mobile prototypes, shared design systems and collaboration without writing code. Its broad prototyping and handoff toolkit is the main reason to choose it; the one-project free cap and per-editor paid plans are good reasons to look elsewhere if budget or project volume is the priority.