Pricing

You pay for the solution, not for the attempt. Drawing, knowing whether a structure is statically determinate and knowing why it is unstable stay free for good.

Payments are not live yet: the product is in preview and top-ups are coming shortly. Sign up now and you get three welcome credits.

15 credits

4,90 €

0,33 € per structure

Fifteen solved structures, with the full working and the diagrams. An unlocked structure stays yours for good.

Coming soon
Save 24%

40 credits

9,90 €

0,25 € per structure

Forty solved structures. Twice the price, nearly three times the structures.

Coming soon

Questions

What is a credit?
One solved structure. It is charged once only: redrawing the same scheme, reloading the page or coming back tomorrow does not start paying again.
What stays free?
Drawing as much as you like, the verdict on the structure, the count of degrees of freedom and restraints, and the explanation of why a structure is unstable.
Can I use it in an exam?
It is built for studying, not for copying: it shows the working step by step so you can redo it by hand. Exam rules are your lecturer's call.