Got a diagram? In a few minutes it's a click-around class project β 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 β 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 β using the free, optional collaboration server.
A file saved in September opens exactly the same in June β no renewal, no expiring account, no breaking update to worry about.
The same Editor and Viewer everyone else uses β 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 "π Collection" instead of "π Cart", and each part says "Learn more" instead of "Buy" β same app, same file format, just relabeled for a classroom.
Drop in a diagram β a cell, an engine, a map, a machine β place a few hotspots, and it's a class project. Works offline after you first open it on a computer, tablet or phone, and keeps working after the bell rings on the last day of school.
Open the Editor β See the full app β