Unlock Diagram Smith Pro in this browser
Last updated 2026-10-25
Pro is tied to your purchase, not to an account: type the licence key from your welcome page or e-mail, or ask for a login link sent to the address you paid with. Up to 5 browsers can use one purchase at a time; unlocking a sixth signs out the one used least recently.
Pro is on in this browser. One purchase works in up to 5 browsers; adding a sixth signs out the oldest. Back to the tools · Your plan
Problems? Write to support@diagramsmith.com from the address you paid with.