Overview

Justinmind lets designers, business analysts and developers move from wireframes to high-fidelity prototypes without coding interactions. Web actions, mobile gestures, sequences and conditions make it possible to show how an interface should behave, not just how it should look. Interactive forms, data lists and grids add useful detail for product flows that depend on input or structured data.

Multiple users can edit a prototype simultaneously, and version control tracks changes. UI kits, synchronized components, templates and masters support reuse across projects. That combination is valuable for teams working on a shared design system, though the Free plan's single-project cap limits how far it can serve as a standing team workspace.

Key features

Interaction design: Build web interactions, mobile gestures, action sequences and conditions without code. This suits teams validating behavior early, rather than teams seeking a coding environment.
Forms and data: Simulate interactive forms, lists and grids, making prototypes more representative of data-driven screens.
Team editing and change tracking: Simultaneous editing and version control help keep collaboration in the prototype itself.
Reusable UI assets: UI kits, shared synchronized components, templates and masters can reduce duplicated design work across a team.
Export and handoff: Interactive HTML prototypes and SVG or PNG assets support sharing and handoff. The API can generate specification assets.
Integrations and support: Integrations include Figma, Adobe XD, Sketch, JIRA, Azure DevOps and user-testing tools. Support channels include email, tickets, community and documentation; Enterprise adds priority support.
Privacy: Justinmind says it takes reasonable steps to protect personal data and will notify materially affected users of a breach within 72 hours. It says payment data goes directly to Braintree and that it does not collect credit-card information.

Pricing

Justinmind is freemium, with a 10-day trial and paid plans starting at $19/mo. The editor-based monthly prices and their trade-offs are:

Free — 0.00 USD per free: Billed $0 per editor/month, with one project, unlimited screens and viewers, UI design and wireframing, interactive input forms, vector design, and PNG, JPG and SVG export. It is a credible way to explore the tool or maintain a small prototype, but the one-project ceiling is restrictive for ongoing work.
Standard — 19.00 USD per month: Billed $19 per editor/month. Unlimited projects, advanced interaction design and collaboration, mobile device testing, and shared UI libraries make this the practical step up for teams needing multiple prototypes and shared assets.
Professional — 29.00 USD per month: Billed $29 per editor/month. It adds data simulation, user flows, HTML export, user-testing integration and custom branding to unlimited projects. Choose it when those simulation and presentation capabilities matter; otherwise Standard covers the core multi-project and collaboration needs.
Enterprise — 59.00 USD per month: Billed $59 per editor/month. SAML single sign-on, shared fonts, document export, requirements management, JIRA and Azure DevOps integration, and priority support target larger or more controlled team deployments.

Paid pricing is per editor, so team costs rise with editor seats. The Free plan includes unlimited viewers, but no paid viewer quotas are stated.

Platforms

Justinmind supports Android, iOS, macOS, Windows, web, API and self-hosted environments. Deployment options include cloud, self-hosted, desktop and mobile, giving teams flexibility in how they access or deploy the product. GDPR and PCI DSS are listed as compliance areas.

Who it's for

Justinmind is a strong fit for design teams, business analysts and developers who need to communicate interactive behavior, collaborate on prototypes and hand off work with reusable assets. Small and mid-market teams can start with Free or move to per-editor plans as project and collaboration needs grow; Enterprise adds identity, requirements and priority-support capabilities for larger teams. It is less compelling for someone who only needs a static wireframing tool or who wants multiple ongoing projects without paying.

Pros and cons

Pro: Interactions, gestures, conditions, forms and data grids let teams model behavior beyond static layouts.
Pro: Simultaneous editing, change tracking and shared UI libraries support coordinated team work.
Pro: Unlimited screens and viewers on Free allow broad review of a single project.
Con: Free is limited to one project, so it is not a roomy long-term option for a multi-project portfolio.
Con: Paid plans charge per editor; team collaboration therefore increases the monthly bill as seats are added.
Con: HTML export and data simulation start at Professional, so users needing those features must go beyond Standard.

Alternatives

Consider ProtoPie if its free plan's cap of two cloud prototypes, eight scenes per prototype and 50MB cloud storage matches a tightly bounded evaluation. UXPin may suit someone comparing a limited free option after its 14-day trial, with two prototypes and 50 AI credits. Choose Google Web Designer if a no-cost tool intended for business use is the priority.

Marvel offers another freemium option, with a free plan limited to one user and one project. Proto.io is another prototyping alternative. Wondershare Mockitt, Zeplin Flows and Plasmic are also options to compare.

Browse more options in Web Design Software, UI design tools, Prototyping Software, Wireframing Software, Developer Handoff Software and Game UI Design Software.

Verdict

Justinmind is a good choice for teams that need interactive prototypes, shared UI assets and a clear path to developer handoff, especially when forms or data behavior must be represented. Its strongest reason to choose it is the breadth from wireframes through simulated interactions and export. Look elsewhere if one project is not enough for a free workflow or if per-editor pricing makes team growth unattractive.

	Justinmind	squig
Free plan	Yes	No
Free trial	No	No
Paid from	$19/mo	—
Open source	No	No
Platforms	Android, api, iOS, macOS, self-hosted, Web, Windows	self-hosted, Web
Free plan	Yes	—
Platform	—	web
Export formats	—	.squig.json, SVG, PNG
Wireframe templates	—	Yes

Justinmind vs squig

Justinmind

squig