Free · iPhone & browser
Keep every formula.
Solve any of them.
Stored with what each letter means and the unit it’s in — so the app can solve for whichever one you left blank.
Saved on your phone in the lab, open on your laptop that evening.
01 — How it’s stored
Not a photo of
a cheat sheet.
Every formula is saved as real structure: the symbol, what it means, and the unit it’s in. That’s the part that makes solving possible.
See what a stored equation looks likeWhy it matters
A screenshot can’t tell you that r is a distance in metres. Structure can — which is why this one still makes sense to you next semester.
Physics 101 · Electric fields
Electric Force
F = kq1q2r2
| Symbol | What it means | Unit |
|---|---|---|
| F | Force between the charges | N |
| k | Coulomb constant | N·m²/C² |
| q1 | First charge | C |
| q2 | Second charge | C |
| r | Distance between them | m |
Name, LaTeX, and one row per variable — stored as data, not an image.
02 — How it’s filed
Folders for the classes
you’re actually taking.
An equation can sit in more than one — because half of them do. Favourites stay at the top.
Equation Toolbox
03 — Everywhere
One library.
Both screens.
Add it on your phone in the lab, open it on your laptop that evening. Your formulas sync to your account, not to a device.
See how it syncsPhysics 101
Centripetal Force
04 — How it solves
Leave one blank.
Open an equation, fill in the values you have, and read off the one you don’t. Rearranging by hand is optional.
Equation Toolbox
What you get
Your own formulas, kept with their variables and units, on the phone and in the browser. Free.
05 — Start
Start your toolbox.
Bring your own formulas. Sign up on the web and everything you save is waiting in the app if you get one later.