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SPECIFICTION
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Proto.io

proto.io

From $29/mo Free plan WebiOSAndroid
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Spec score 8.3 #15 of 41 in Web Design Software

What it is

Proto.io is a web-based, no-code tool for building interactive prototypes for iOS, Android, and web. It includes native iOS and Android apps, more than 250 UI components that mimic native behavior, and over 1,000 customizable templates. Its library lists more than 6,000 icons, stock images, and sound effects. Prototypes can use over 80 events and over 40 actions, including nested and multidirectional scrolling, as well as 18 built-in screen transitions. Users can share links and snapshots or export to PDF, PNG, and HTML. The free plan is limited to one user, one active project, five prototype screens, and 10 MB of storage; it allows single-click sharing but no additional reviewers. A 15-day trial is listed. Freelancer costs $29 a month, billed monthly; annual billing is listed at $24 per month. Other listed monthly plans are Startup at $49.00 USD, Agency at $99.00 USD, and Corporate at $199.00 USD. Enterprise pricing is tailored. Paid plans include 256-bit SSL encryption.

Spec sheet

Free plan
YesRead 21 Sep 2026 · proto.io
Headquarters
44 Montgomery St. STE 300, San Francisco, CA 94104, United StatesRead 28 Sep 2026 · proto.io
Digital Assets
The library includes more than 6,000 static and animated icons, stock images, and sound effects.Read 28 Sep 2026 · proto.io
Free Plan Exports
The free plan supports HTML, PNG, and PDF export, plus design-tool import and branding.Read 28 Sep 2026 · proto.io
Free Plan Limits
The free plan includes 1 user, 1 active project, 5 prototype screens, and 10 MB storage.Read 28 Sep 2026 · proto.io
Free Plan Sharing
The free plan includes single-click sharing but no additional reviewers.Read 28 Sep 2026 · proto.io
Free Trial
The trial lasts 15 days and requires no credit card.Read 28 Sep 2026 · proto.io
Interaction Options
Proto.io offers over 80 events and over 40 actions, with nested and multidirectional scrolling.Read 28 Sep 2026 · proto.io
Screen Transitions
Users can connect screens with 18 built-in transitions.Read 28 Sep 2026 · proto.io
Sharing And Export
Users can share links, export to PDF, PNG, or HTML, and share snapshots at exact points in time.Read 28 Sep 2026 · proto.io
SSL Encryption
Paid plans include 256-bit SSL encryption, and Proto.io uses industry-standard SSL security.Read 28 Sep 2026 · proto.io
Support Resources
Resources include documentation, sample projects, video tutorials, guides, webinars, and case-by-case support.Read 28 Sep 2026 · proto.io
Supported Platforms
Proto.io supports iOS, Android, and web prototypes, with native iOS and Android apps.Read 28 Sep 2026 · proto.io
Team Security
Its granular security model supports working alone or in teams of any size.Read 28 Sep 2026 · proto.io
Template Library
Proto.io provides more than 1,000 customizable web and mobile templates.Read 28 Sep 2026 · proto.io
UI Components
The product includes more than 250 UI components that mimic native behavior.Read 28 Sep 2026 · proto.io
User Testing
Proto.io supports user testing with popular user testing platforms.Read 28 Sep 2026 · proto.io
Web-Based No-Code
Proto.io is web based and requires no coding skills.Read 28 Sep 2026 · proto.io

Plans and prices

Free plan Price not published 1 user · 1 active project · 5 prototype screens · 10 MB storage · No additional reviewers Read 21 Sep 2026 · proto.io
Freelancer $29 a month paid monthly 1 user · 5 active projects Annual billing shows $24 per month; 1 user, 5 active projects, unlimited reviewers Read 28 Sep 2026 · proto.io
Startup $49 a month paid monthly 2 users · 10 active projects Annual billing shows $40 per month; 2 users, 10 active projects, unlimited reviewers Read 28 Sep 2026 · proto.io
Agency $99 a month paid monthly 5 users · 15 active projects Annual billing shows $80 per month; 5 users, 15 active projects, unlimited reviewers Read 28 Sep 2026 · proto.io
Corporate $199 a month paid monthly 10 users · 30 active projects Annual billing shows $160 per month; 10 users, 30 active projects, unlimited reviewers Read 28 Sep 2026 · proto.io
Enterprise Price not published Tailored plan Additional users · Unlimited projects · SSO · Enterprise-grade security Read 21 Sep 2026 · proto.io
Free Account Free Limited-feature plan available after the trial expires Read 28 Sep 2026 · proto.io

Every Proto.io plan and price →

Strong points and limits

Strong points

  • Web-based prototyping requires no coding skills.
  • Supports iOS, Android, and web prototypes.
  • Includes over 250 UI components.
  • Exports prototypes to PDF, PNG, and HTML.
  • A 15-day trial is listed.

Limits

  • Free plan is limited to one active project.
  • Free plan allows only five prototype screens.
  • Free plan includes no additional reviewers.
  • Enterprise pricing is tailored rather than listed.

Who it suits

Proto.io suits people or teams creating and sharing interactive prototypes for iOS, Android, and web without coding. Its free plan is narrowly sized for an individual working on one project, while larger plans list more users and projects.

Verdict

Proto.io offers a no-code prototype workflow with detailed interaction, sharing, and export options. The free plan has clear project and storage limits, while paid monthly plans start at $29 a month.

Where Specifiction places it

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