Proto.io
Prototyping software
Software design software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$24 per month
Free TrialFree version
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What is Proto.io
Proto.io is a web-based prototyping tool used to create interactive prototypes for web and mobile applications. It supports UX/UI designers and product teams who need to validate flows, run usability tests, and share clickable prototypes with stakeholders. The product emphasizes no-code interactions, screen transitions, and device previews, with options to present and collect feedback on prototypes.
No-code interactive prototyping
Proto.io provides a drag-and-drop editor with interaction events, transitions, and animations that let teams build realistic click-through prototypes without writing code. This supports rapid iteration during early product discovery and usability testing. It is well-suited for teams that need interactive behavior beyond static wireframes.
Sharing, preview, and feedback
The platform supports shareable links and presentation-style viewing for stakeholder reviews. It includes commenting/feedback workflows that help consolidate review notes around specific screens or elements. These capabilities reduce reliance on separate tools for basic review cycles.
Mobile-focused preview options
Proto.io includes device frames and preview modes oriented toward mobile app prototyping. This helps teams validate touch flows and screen-to-screen navigation in a format closer to end-user devices. It is useful for product teams building native or responsive experiences.
Design system depth varies
Compared with tools centered on full UI design and component systems, Proto.io is more focused on prototyping interactions than on end-to-end design system management. Teams with complex component libraries may need additional tooling to manage tokens, variants, and governance. This can add overhead when scaling design across multiple products.
Handoff and developer workflow limits
Proto.io is primarily a prototyping environment rather than a full design-to-development handoff platform. Developer-facing artifacts such as inspectable specs, code-oriented exports, or deep integration into engineering workflows may be less comprehensive than in tools built for design handoff. Teams may need to supplement with separate documentation or design files.
Collaboration expectations for teams
While it supports sharing and commenting, real-time multi-user co-editing and broader whiteboarding-style collaboration may not match products designed around synchronous team canvases. Distributed teams that rely heavily on live co-creation may find collaboration workflows less central. This can influence tool choice for workshops and early ideation.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free | $0 (permanently free limited plan) | 1 user; 1 active project; 5 prototype screens; 10 MB storage; Preview in Proto.io App; Export to HTML/PNG/PDF; Import from design tools; Branding; Single-click Sharing; No additional reviewers. (Converted to after trial). |
| Freelancer | $29 per month (monthly) / $24 per month (billed annually) | 1 user; 5 active projects; Unlimited reviewers; All features available for all plans. |
| Startup | $49 per month (monthly) / $40 per month (billed annually) | 2 users; 10 active projects; Unlimited reviewers; All features available for all plans. |
| Agency | $99 per month (monthly) / $80 per month (billed annually) | 5 users; 15 active projects; Unlimited reviewers; All features available for all plans. |
| Corporate | $199 per month (monthly) / $160 per month (billed annually) | 10 users; 30 active projects; Unlimited reviewers; All features available for all plans. |
| Enterprise | Custom / Contact sales | Tailored enterprise plans with additional users, unlimited projects, SSO and enterprise-grade security; contact sales for pricing. |
Seller details
Proto.io Inc.
San Francisco, CA, USA
2011
Private
https://proto.io/
https://x.com/protoio
https://www.linkedin.com/company/proto-io/
