Simple pricing,
serious power.
Start free, upgrade when you're ready. No surprises, no hidden fees — just the tools you need to go from idea to prototype.
Free
Explore & experiment
Everything you need to capture your first ideas and explore the full pipeline. No credit card required.
Includes
- 3 active concepts
- 2 AI models (Gemini 3 Flash & GPT 5.4 Mini)
- Basic PRD generation (5 sections)
- 5 AI generations / month
- Build with v0, Lovable, Bolt, Replit, Cursor
- 1 external link per concept
- AI-powered critique & feedback
- Real-time cloud sync
- Dark & light mode
Pro
Unlock 10 AI models, detailed PRDs with user stories, unlimited concepts, and one-click deploy. The full creative engine.
Everything you need
- Unlimited active concepts
- 11 AI models across 8 providers
- Detailed PRDs with user stories & criteria
- 70 AI generations / month
- Build with v0, Lovable, Bolt, Replit, Cursor
- Unlimited external links
- PDF & Markdown export
- Deploy to Vercel & Netlify
- Real-time cloud sync
Max
For prolific builders
Every AI model including Opus 4.7 and GPT 5.5, 5× the monthly generations, and priority support. Maximum creative power.
Everything in Pro, plus
- Unlimited active concepts
- All 18 AI models incl. Opus 4.7 & GPT 5.5
- Comprehensive PRDs with competitive analysis
- 250 AI generations / month
- Build with v0, Lovable, Bolt, Replit, Cursor
- Unlimited external links
- PDF & Markdown export
- Deploy to Vercel & Netlify
- Priority support
Compare plans
A detailed look at what each tier includes.
| Feature | Free | ProPopular | Max |
|---|---|---|---|
| Concepts & Pipeline | |||
| Active concepts | 3 | Unlimited | Unlimited |
| Pipeline stages (Idea → PRD → Prototype) | |||
| AI Generation | |||
| AI Generations | 5 / month | 70 / month | 250 / month |
| AI Models | 2 models | 11 models | 18 models |
| PRD Depth | Basic | Detailed | Comprehensive |
| AI critique | |||
| Integrations & Export | |||
| External links per concept | 1 | Unlimited | Unlimited |
| "Build with..." tools (v0, Lovable, Bolt, Replit, Cursor) | |||
| PRD Export | PDF & Markdown | PDF & Markdown | |
| Deploy Platforms | Vercel & Netlify | Vercel & Netlify | |
| Support & Extras | |||
| Real-time cloud sync | |||
| Dark/light mode | |||
| Search (title, tags, summary) | |||
Concepts & Pipeline
Active concepts
Free
3Pro
UnlimitedMax
UnlimitedPipeline stages (Idea → PRD → Prototype)
Free
Pro
Max
AI Generation
AI Generations
Free
5 / monthPro
70 / monthMax
250 / monthAI Models
Free
2 modelsPro
11 modelsMax
18 modelsPRD Depth
Free
BasicPro
DetailedMax
ComprehensiveAI critique
Free
Pro
Max
Integrations & Export
External links per concept
Free
1Pro
UnlimitedMax
Unlimited"Build with..." tools (v0, Lovable, Bolt, Replit, Cursor)
Free
Pro
Max
PRD Export
Free
Pro
PDF & MarkdownMax
PDF & MarkdownDeploy Platforms
Free
Pro
Vercel & NetlifyMax
Vercel & NetlifySupport & Extras
Real-time cloud sync
Free
Pro
Max
Dark/light mode
Free
Pro
Max
Search (title, tags, summary)
Free
Pro
Max
No lock-in
Cancel anytime. Downgrade to Free and keep all your concepts — you just lose AI generation until you re-subscribe.
Prorated billing
Upgrade mid-cycle and only pay the difference. Downgrade and keep access through your current billing period.
Free tier forever
The Free plan isn't a trial — it's a permanent tier with real functionality. Capture ideas, generate critiques, and sync to the cloud.
Common questions
Everything you need to know about Concept Sandbox pricing.
Free users get Gemini 3 Flash and GPT 5.4 Mini. Pro unlocks 11 models across 8 providers — including Claude Sonnet 4.6, GPT 5.4, Grok 4 Fast, and more. Max gives you all 18 models including Claude Opus 4.7, GPT 5.5, and DeepSeek R1. All models are powered through OpenRouter, so you always get the latest versions.
All users can launch into external prototyping tools — v0, Lovable, Bolt.new, Replit, or Cursor — with concept context pre-loaded. Your PRD, user stories, and requirements get passed directly to the tool. Build externally, then link the result back to your Concept Sandbox.
Each AI critique or PRD generation counts as one generation. Auto-fill (brain dump extraction) also counts. There's no distinction between standard and premium generations — all models draw from the same monthly pool.
Absolutely. Upgrades take effect immediately with prorated billing — you only pay the difference for the remainder of your billing period. Downgrades take effect at the end of your current period so you keep access until then.
You'll see a friendly upgrade prompt with a one-click CTA. Your concepts, PRDs, and all data remain fully accessible — only new AI generations pause until your limit resets at the start of the next period.
Your data is stored securely on Supabase with row-level security, meaning only you can access your concepts. All connections are encrypted via TLS. We never train AI models on your data. When you use AI features, your concept content is processed via OpenRouter under strict data processing agreements. External 'Build with' tool launches are always user-initiated.
Not yet, but it's on the roadmap. When we launch annual plans, you'll get two months free. Subscribe monthly now and you'll be automatically offered the annual discount when available.