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MockFlow vs pen.dev

Side-by-side comparison of features, pricing, ratings, and alternatives.

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MockFlow
MockFlowWireframing and AI-enhanced whiteboarding tool for UI design and brainstorming.
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pen.dev
pen.devNever start from scratch. Design with agents, refine every detail on canvas, and ship it back to code.
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Overview
Description

MockFlow is a wireframing and online whiteboard platform that helps teams visually brainstorm, wireframe, and design user interfaces, combining IdeaBoard for AI-enhanced whiteboarding with WireframePro for structured UI wireframing using 100+ pre-built components. It supports screenshot-to-wireframe and text-to-wireframe AI generation and can export designs to code including React, Tailwind, and Flutter.

An agentic canvas for building bold ideas. It is a design tool that integrates AI agents directly on the canvas, allowing users to import any part of any app, work with multiple AI models (Claude, OpenAI, Grok, etc.), and design with agents. It includes familiar design features like Figma import, pen tool, shaders, gradients, components, variables, HTML export, and more, all powered by a custom WebGL pipeline for smooth performance.

Pricing
Freemium
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Category
UI & UX Design
UI & UX Design
Best for
Product teams and agencies needing wireframing plus whiteboarding
Designers, UI/UX professionals, developers, and teams who want to leverage AI in their design workflow and seek an alternative to traditional design tools like Figma.
Specifications
deployment
Cloud/SaaS
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open source
No
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api available
No
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key integrations
Slack, Microsoft Teams, Google Meet, Confluence, Trello, Jira, Google Drive
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Platform
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Web-based (browser)
File Format
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Open .pen format (JSON)
Key Features
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Pen tool, Shaders, Gradients, Components, Slots, Variables, Flex layout, Effects, Snapping, Pixel grid, Layers panel, Presentation mode, Share by link, MCP/CLI support
AI Integration
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Supports Claude, OpenAI, Grok, Gemini, Qwen, Kimi, Deepseek, Minimax via subscriptions or API keys
Export Formats
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HTML/CSS/Tailwind, PNG, JPEG, WEBP, PDF
Import Formats
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Figma (.fig), HTML, Webpages (via built-in browser), SVG
Pros & Cons
Pros
  • Combines wireframing, whiteboarding, and sitemapping in one connected toolset
  • AI text-to-wireframe and screenshot-to-wireframe features speed up early-stage design work
  • Code export to multiple frameworks (React, Tailwind, Flutter) helps bridge design and development
  • Long-established product (since 2009) with mature feature set
  • Agentic canvas with AI integration for design
  • Supports multiple AI models (Claude, OpenAI, Grok, Gemini, etc.)
  • Import from Figma, HTML, or any webpage via built-in browser
  • Buttery smooth performance with custom WebGL pipeline
Cons
  • Exact pricing for paid tiers is not clearly published and requires visiting a separate pricing calculator
  • Free tier is quite limited (1 wireframe project, 3,000 objects per board)
  • Visual design capability is more basic than full UI design tools like Figma
  • Relatively new and less established than Figma
  • May require subscription to AI models or API keys for full agent functionality
  • Limited community and plugin ecosystem compared to Figma
  • Dependence on web-based platform might be a concern for offline work
Community & Metrics
Upvotes
0
0
User rating
Not enough data
Not enough data

More alternatives & similar tools

Alternatives to MockFlow

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Moqups
Moqups

Browser-based tool for wireframes, diagrams, and interactive prototypes.

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pen.dev
pen.dev

Never start from scratch. Design with agents, refine every detail on canvas, and ship it back to code.

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Balsamiq
Balsamiq

Low-fidelity wireframing software focused on speed and structure over visual polish.

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MockFlow
MockFlow

Wireframing and AI-enhanced whiteboarding tool for UI design and brainstorming.

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Uizard
Uizard

AI design tool that turns text prompts, screenshots, and sketches into editable app mockups.

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next-ai-draw-io
next-ai-draw-io

AI‑enhanced diagramming directly in your browser

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Graphis
Graphis

One canvas for every AI model, every content type, every idea.

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The Verdict

AI-generated from listing data

MockFlow offers a proven, low‑cost wireframing/whiteboarding suite with AI helpers, while pen.dev provides a richer, AI‑driven design canvas but with less market maturity and unclear pricing.

Key differences

  • •AI generation: MockFlow creates wireframes from text or screenshots; pen.dev offers AI agents for design assistance on a canvas.
  • •Depth of design tools: MockFlow focuses on wireframes and basic UI components; pen.dev includes full‑featured pen tool, shaders, flex layout, and HTML/CSS export.
  • •Pricing transparency: MockFlow has a freemium model with limited free tier; pen.dev’s pricing is not disclosed.
  • •Integration ecosystem: MockFlow integrates with Slack, Teams, Jira, Confluence, Google Drive; pen.dev has limited listed integrations, mainly file import/export.
  • •Maturity and support: MockFlow has been live since 2009; pen.dev is newer with a smaller community and ecosystem.
DimensionWinner

Pricing & value

MockFlow offers a freemium tier; pen.dev pricing is unknown, making MockFlow the clearer value option.

MockFlow

Ease of use / learning curve

pen.dev mimics Figma/Sketch shortcuts and offers a canvas with AI agents, likely smoother for designers.

pen.dev

Features & depth

pen.dev provides full design tools (pen, shaders, flex layout, variables) beyond MockFlow’s wireframe‑focused features.

pen.dev

Integrations & ecosystem

MockFlow lists integrations with Slack, Teams, Jira, Confluence, Google Drive; pen.dev lists none beyond file formats.

MockFlow

Collaboration

MockFlow supports real‑time multiplayer boards and wireframes; pen.dev offers link‑sharing but no explicit real‑time co‑editing.

MockFlow

Scalability

MockFlow is a SaaS cloud service with enterprise‑grade collaboration; pen.dev is web‑only with unclear scalability.

MockFlow

Support & security

MockFlow’s long‑standing service implies established support; pen.dev provides no details on support or security.

MockFlow

Choose MockFlow if…

Teams needing affordable, proven wireframing/whiteboarding with basic code export and strong integrations.

Choose pen.dev if…

Design‑focused groups wanting a full‑featured, AI‑enhanced canvas and HTML/CSS export, and can tolerate a newer platform.

Common questions

What is the cost to upgrade beyond the free tier?

MockFlow offers a freemium model but paid tier pricing is not published; pen.dev’s pricing is unknown.

Can I export designs directly to code?

MockFlow exports to React, Tailwind, Flutter; pen.dev exports HTML/CSS/Tailwind, PNG, JPEG, PDF.

Does the tool support real‑time collaboration?

MockFlow provides real‑time multiplayer collaboration; pen.dev offers link sharing but no explicit real‑time co‑editing feature.