Got a diagram? In a few minutes it's a click-around class project — no accounts to create, no cloud to trust, nothing to pay for.
A catalog is just a file on your own device. There's no cloud database behind it — nothing to sign up for, and nothing to breach or leak.
A whole class can label one diagram together, live, on the same file at once — using the free, optional collaboration server.
A file saved in September opens exactly the same in June — no renewal, no expiring account, no breaking update to worry about.
The same Editor and Viewer everyone else uses — just switched to "Education" mode, which relabels Buy/Cart into Learn more/Collection.
This demo catalog has "Education" mode switched on: notice the toolbar says "📚 Collection" instead of "🛒 Cart", and each part says "Learn more" instead of "Buy" — same app, same file format, just relabeled for a classroom.
Drop in a diagram — a cell, an engine, a map, a machine — place a few hotspots, and it's a class project. Works offline, keeps working after the bell rings on the last day of school.
Open the Editor → See the full app →