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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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PseudoEditor
✓ verifiedFreemium
Free browser-based pseudocode editor and compiler with exam-board syntax modes, aimed at computer science students and teachers.
57K visits/mo16K saves
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Codeflying
✓ verifiedFreemium
Vibe-coding builder creating full-stack apps by chatting with AI.
118K visits/mo
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Kombai
✓ verifiedFreemium
AI design engineer that designs UIs on a canvas and ships production frontend code in your own stack.
156K visits/mo
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Stately
✓ verifiedFreemium
Visual state-machine editor (built on XState) that lets teams design app logic as diagrams and export runnable JS/TS code.
71K visits/mo
Pricing
No public pricing
No public pricing
Free: 0$
Basic: 25$
Advanced: 40$
Premium: 200$
Free: $0 (300 credits/month)
Pro: $20/month (2,000 credits)
Team: $40/user/month
Professional: $33/month (annual) or $39/month (monthly), 1,000 AI generations/month
Team: $167/month (annual) or $199/month (monthly), up to 10 members
Free trial available
Core features
- ✦Syntax highlighting and error checking for pseudocode
- ✦Cloud-based project saving across devices
- ✦Built-in pseudocode compiler for instant execution
- ✦Toggleable syntax rules for AQA, OCR, CIE, Edexcel and IB
- ✦AI tutor and code-to-language converters (Pro tier)
- ✦Bulk institutional licensing for schools and universities
- ✦Design canvas integrated directly into the IDE (VSCode/Cursor)
- ✦Agent-driven MCP canvas based on open design format
- ✦AI Multiplayer for generating screens and flows in parallel
- ✦Design as Code: Design files live in repo, versioned with Git
- ✦Pixel-perfect vector-to-code workflow
- ✦CodeFlying enables full-stack app creation via chat in minutes
- ✦Design UIs on an infinite canvas
- ✦Production frontend code in your stack (400+ libraries)
- ✦Reuses your components, tokens, and hooks
- ✦In-browser editing with DevTools context
- ✦Design and code stay synced in your repo
- ✦Asset and animation generation
- ✦Drag-and-drop visual state machine editor
- ✦Bidirectional code/diagram sync via XState
- ✦AI generation and modification of state machines
- ✦Auto-generated React app prototypes and tests
- ✦GitHub sync and Figma embedding
- ✦Live simulation and Stately Inspector for debugging
- ✦Version history and shareable diagrams
Use cases
- →Students learning programming logic before writing real code
- →Teachers grading pseudocode assignments to exam-board specs
- →Exam preparation for computer science courses
- →Converting pseudocode into Python, C++ and other languages
- →Designing new products and features with pixel-perfect precision without leaving the development environment.
- →Eliminating design handoffs by having design and code live under one roof.
- →Accelerating workflow by using AI multiplayer to generate UI components and flows.
- →Shipping production-ready apps with guaranteed code-design alignment.
- →Integrating existing design systems directly from the codebase.
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- →Turning designs into production frontend code
- →Building landing pages and product UIs
- →Refining UI directly in the browser
- →Keeping design and code in sync
- →Frontend teams modeling complex UI flows
- →Backend teams documenting workflow logic
- →Teams wanting living, always-current documentation
- →Non-technical stakeholders reviewing app logic visually
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