u/lollypp

I got a 5 on AP Chem, and over the past few months I built Simistry to create the interactive tools I wish I had when learning.

100+ interactive simulations, a full study guide, MCQ/FRQ practice, practice exams, and more!

12 simulations are completely free, no credit card or account required.

Check it out: https://simistry.app

Would love to hear what you think!

I've been building Simistry: interactive simulations for every unit of AP Chemistry (100+ simulations, a full study guide, study planner, and much more!).

The first 25 accounts get Lifetime access, free, forever. No payment, no card, no trial that expires, the seat is granted at signup and it's yours permanently. There's a live counter on the signup page showing how many are left.

Nine sims are free for everyone, forever. One per CED unit, no account needed:

1. Periodic Trends  all 118 elements heat-mapped by radius, IE, electronegativity
2. VSEPR Geometry  23 rotatable molecules with real bond angles
3. Intermolecular Forces  drag temperature, watch 14 substances condense
4. Solubility Rules & Precipitation mix two solutions, predict before you pour
5. Reaction Energy Profile drag the ‡ marker, add a catalyst, see the two-step path
6. Calorimetry coffee cup + bomb, q = mcΔT resolving live
7. Le Chatelier's Principle a real equilibrium solver walking Q back to K
8. Acid-Base Titration strong, weak, diprotic, triprotic curves building drop by drop
9. Electrochemical Cells galvanic and electrolytic, electrons animated

Three more sims rotate free every day, and the free tier also gets 20 MCQs/day, 3 FRQs/day, and one full-length practice exam per month + no account needed for any of it!

Get your lifetime seat here at https://simistry.app

Happy to take requests on what to build next!