jkboard has two display modes, chosen with the PREMIUM / BASIC switch at the top right of the app. Both are free, give access to exactly the same features, and you can switch at any time — no payment, account or ad-blocker check.
| Feature | BASIC | PREMIUM (default) |
|---|---|---|
| Notes, connections (lines, arrows, dashes), colours | Available | Available |
| Select several notes or connections, change their style together | Available | Available |
Find / replace, versions, lock, import / export .jk | Available | Available |
| Languages, dark / light themes, full screen, hide the menus | Available | Available |
| Advertising space (Google AdSense) and consent drawer | Shown | None |
| Google advertising script | Loaded after your consent choice | Never loaded |
Support the project
If you like jkboard, the ✏️ button in the app opens an optional donation page (Stripe). It is a voluntary one-time payment: it does not unlock anything and creates no account.