Pricing

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.

Annual plans coming soon — get 2 months free

Free

Explore & experiment

$0forever

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
Most popular

Pro

$19.99/mo

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

$59.99/mo

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.

Concepts & Pipeline

Active concepts

Free

3

Pro

Unlimited

Max

Unlimited

Pipeline stages (Idea → PRD → Prototype)

Free

Pro

Max

AI Generation

AI Generations

Free

5 / month

Pro

70 / month

Max

250 / month

AI Models

Free

2 models

Pro

11 models

Max

18 models

PRD Depth

Free

Basic

Pro

Detailed

Max

Comprehensive

AI critique

Free

Pro

Max

Integrations & Export

External links per concept

Free

1

Pro

Unlimited

Max

Unlimited

"Build with..." tools (v0, Lovable, Bolt, Replit, Cursor)

Free

Pro

Max

PRD Export

Free

Pro

PDF & Markdown

Max

PDF & Markdown

Deploy Platforms

Free

Pro

Vercel & Netlify

Max

Vercel & Netlify

Support & 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.

Ready to build something?

Join hundreds of solo creators turning messy ideas into structured prototypes. Start free, upgrade when you're ready.