Simple, transparent pricing

Start free. Pay once when you need more power.

Free

$0

No credit card required

  • ✓3 models
  • ✓Up to 1,000 time steps per simulation
  • ✓Secure cloud storage for your models
  • ✓AI generation with your own API key
  • ✓Video export (with watermark)
Lifetime License

Pro

$99 one-time

Pay once, own forever. No recurring fees.

  • ✓Unlimited models & time steps
  • ✓Video export without watermark
  • ✓Lightning-fast edge execution
  • ✓Cloud syncing across all your devices
  • ✓Yours to keep forever

Why choose us?

  • 💧Beautiful animated system visualizations generated entirely on your device
  • ⚡Intuitive modeling with instant feedback using edge compute
  • 🎬One-click MP4 exports for presentations and social media
  • 🎛️Interactive parameter exploration with sliders

Advanced Collaboration

Public templates, shared workspaces, and real-time multiplayer editing — coming soon as an optional cloud add-on.

Coming soon

AI generation uses your own API key (OpenAI, Google, etc.) stored locally — Nirai never sees your key and usage is unlimited.