Design for free. Pay per download.
No subscription, no seat licence, nothing to install. Designing, previewing and checking a part costs nothing and needs no account. You spend tokens only when you download a file.
Tokens per design, by file type
2D drawing
SVG and DXF with true lines and arcs, for laser, waterjet and CAD sketches.
3D print
STL with your print compensation applied, ready for the slicer.
CAD model
STEP at true nominal size, for Fusion, SolidWorks, Onshape, FreeCAD and the rest.
One payment covers the whole design
- A design, not a file. One purchase covers every file of the same design for 24 hours — both pulleys and the belt, as often as you like.
- Upgrades pay the difference. Took the STL and now want STEP? You pay only the gap.
- Refunded if it fails. If an export fails, its tokens go straight back to your account.
- 20 free tokens to start. Every new account gets them — enough for several downloads.
- The price shows first. The Download window shows the cost on the button before anything is charged.
Buying tokens
Tokens come in packs, paid by PayPal or Stripe, in US dollars. They last as long as you sign in at least once every five years.
Sign-in is by email link, Google or GitHub. See the terms for refunds.
Good to know
Do I need an account to try it?
No. Open any tool and design away; the 3D view, Dimensions panel and warnings are all free. You need an account only to download.
Are there free files?
Yes — every sample has its STL files free to download (CC BY 4.0). To change a sample, open it in the app.
Do the CAD add-ins cost extra?
The add-ins open the same online tools, so the same token prices apply. See CAD integrations for what's available.
What happened to the subscription and the standalone edition?
Both were retired in September 2026. Every tool now runs online, on our servers, and you pay only for what you download.