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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.

Lovable logo
Lovable
✓ verifiedFreemium

AI app builder that turns chat prompts into working web apps and sites, with credit-based build and deploy.

35M visits/mo69K saves
Notebooks.app logo
Notebooks.app
✓ verifiedFree trial

An AI whiteboard for content creators that pulls in your channels and research to find ideas, write scripts and draft posts in your voice.

3.1K saves
Firebase Studio logo
Firebase Studio
✓ verifiedFree

Browser-based AI dev workspace by Google for full-stack apps; being sunset on 22 Mar 2027, no new workspaces.

531K visits/mo
Angular.dev logo
Angular.dev
✓ verifiedFree

Google's open-source TypeScript framework for building scalable web apps, featuring signals, reactivity and first-party tooling.

1.1M visits/mo
Castly logo
Castly
✓ verifiedFreemium

AI writing assistant that turns chat conversations and uploaded PDFs into polished, publishable content for creators.

3.4K visits/mo
Pricing

No public pricing

No public pricing

Free trial available

No public pricing

No public pricing

Free: $0 (5 PDF uploads, 5 published posts)
Pro: $12/mo (unlimited conversations, uploads, posts)
Core features
  • Chat-to-app and website generation
  • Real-time prototype building
  • One-click deploy and hosting
  • Templates to start projects
  • Credit-based building with shared workspaces
  • You own your code and data
  • AI whiteboard workspace for content
  • Connects YouTube, Instagram, competitors and research
  • AI idea discovery from your channels
  • AI script and post generation in your voice
  • Consolidates multiple content tools
  • Cloud workspaces for full-stack development
  • App Prototyping agent from natural language
  • Gemini AI for coding, debugging and docs
  • Repo import from GitHub, GitLab and Bitbucket
  • Web previews and Android emulators
  • Deploy to Firebase App Hosting, Hosting or Cloud Run
  • Signals-based fine-grained reactivity
  • Built-in control flow and deferrable views
  • Server-side rendering and hydration
  • First-party routing, forms and dependency injection
  • AI-forward tooling and MCP resources
  • In-browser tutorials and playground
  • Conversational AI content generation
  • Question-answering over uploaded PDFs
  • Rich text editor for refining drafts
  • One-click publishing and sharing
  • Unlimited conversations on all plans
Use cases
  • Build web apps without coding
  • Prototype product ideas quickly
  • Create landing pages and sites
  • Ship internal tools
  • Finding content ideas that perform
  • Writing video scripts faster
  • Drafting social posts in a consistent voice
  • Prototyping apps from a prompt or mockup
  • Building full-stack apps in the browser
  • Collaborating and sharing preview URLs
  • Deploying and monitoring apps quickly
  • Building scalable single-page apps
  • Enterprise web application development
  • Performance-critical front ends
  • Learning modern web development
  • Drafting blog posts and articles
  • Extracting insights from documents
  • Refining and polishing AI drafts
  • Publishing content quickly
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