Nobody taught me physics the way it deserved. SciSim keeps that door open — free, for the next curious mind.
♥ Help keep it free
If SciSim sparked something in you, help us keep the lights on.
298 interactive simulations. No ads. No paywalls. No data resale. For the next student who can't afford a textbook but still wants to understand the world.
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No money needed
Say thank you
Did a simulation make something finally click? Tell us. A kind word genuinely keeps this work going.
Write a thank-you ↓
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Any amount welcome
Make a gift
A one-time contribution, or funding a whole category — write to [email protected], or use the form below and we'll work out the details together.
Open contact form ↓
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If you can't pay · still huge
Send it to one person
Money is tight? Genuinely fine. Just forward SciSim to one student, teacher, or curious friend who'd love it. Word of mouth is how we grow.
What your donation actually buys
$5
A month of domain & email for the whole site
$25
One new fact-checked simulation built end-to-end
$50
A whole new sub-category (e.g. "Stat Mech")
$200
A full year of operating costs, with reserve
Can't donate right now?
Truly fine. SciSim is free for a reason — because that's the whole point. If you still want to help without spending money:
- Send the link to one teacher or one student who'd use it.
- Bookmark the site and come back next time a topic stumps you.
- If a sim has a bug, tell us. Specific bug reports save hours of debugging.
Whether you donate $5 or share the link with one friend or just keep coming back when you're stuck on a problem — thank you. That's what makes this worth building.
— the builder of SciSim