Simple, fair pricing
Choose your tier and unlock the physics simulations you need.
Free
$0
50
one-time — no reset
22 of 43 simulations
- 22 simulations
- PNG snapshot export
- Fullscreen / projector mode
- Free resets & re-runs
- Light "top5fella" watermark on exports
Launch
$5/mo
200
runs per month (reset monthly)
30 of 43 simulations
- Everything in Free
- 8 more simulations (30 total)
- Video export at 480p, watermarked
- 200 runs/month
Orbit
$9/mo
1000
runs per month (reset monthly)
37 of 43 simulations
- Everything in Launch
- 7 more simulations (37 total)
- Video export at 1080p
- Live interactive labs
- 1000 runs/month
Interstellar
$18/mo
Unlimited
runs per month (fair use)
All 43 simulations
- Everything in Orbit
- All 43 simulations
- 4K video export
- Clean, watermark-free exports
- The two exclusive labs (ideal-gas piston, nuclear fission)
- Unlimited runs
Students or teachers: verify a .edu email for $10/mo.
All subscriptions renew monthly. Cancel anytime from your account settings. Stripe processes all payments securely.