A free PhET alternative with 288 published interactive science simulations
PhET Interactive Simulations (University of Colorado Boulder) is a fantastic, free resource trusted by millions. If you are looking for an alternative that covers more subjects — including computer science, economics and engineering — and maps to Indian competitive exams, SciFunLab is built for exactly that.
SciFunLab vs PhET at a glance
| Feature | SciFunLab | PhET |
|---|---|---|
| Price | Free forever | Free |
| Account required | No | No |
| Runs in a mobile browser | Yes | Yes |
| Core sciences (physics, chemistry, biology, math) | Yes | Yes |
| Computer science, economics & engineering | Yes | Limited |
| Indian exam prep (JEE, NEET, SSC, UPSC) | Yes | Not aligned |
| Simulation library | 288 published labs across STEM subjects | Focused on core sciences |
PhET is free, account-free and works on mobile too — we show those as parity. Where SciFunLab differs is subject breadth and exam alignment.
Every subject, in one place
Physics
Motion, waves, electricity, optics, chaos and more.
Chemistry
Reactions, equilibrium, titration and the periodic table.
Biology
Cells, genetics, DNA replication and ecosystems.
Mathematics
Algebra, calculus, geometry and combinatorics, visualised.
Technology & CS
Circuits, algorithms, AI and computer science — beyond PhET's scope.
Engineering
Structures, control systems, motors and design.
Economics
Supply & demand, game theory and behavioural economics.
Exam prep
Simulations mapped to JEE, NEET, SSC and UPSC syllabi.
Popular simulations to try now
Frequently asked questions
Is SciFunLab free like PhET?
Yes. Every simulation on SciFunLab is free to use in your browser, with no paywalls and no account required — the same open-access spirit as PhET.
Do I need to install anything?
No. SciFunLab runs entirely in the browser on phones, tablets and laptops. There is nothing to download or install.
What does SciFunLab cover that PhET does not emphasise?
Alongside the core sciences, SciFunLab adds interactive labs for computer science, economics, engineering and environmental science, plus simulations mapped to Indian competitive exams such as JEE, NEET, SSC and UPSC.
Is SciFunLab a replacement for PhET?
PhET is an excellent, widely trusted resource. SciFunLab is a complementary alternative: use whichever fits your topic. If you need broader subject coverage or Indian exam alignment, SciFunLab is built for that.
Ready to explore? Browse the full library of 288 free simulations.