Frequently Asked Questions

Need Some Help?

Send email to and we’ll write back as quickly as possible. You may also want to check out our compilation of troubleshooting tips, or discuss the issue with others in the Zengobi Forums.

Lost Your License Key?

Fill out this form and we’ll email it back to you in a flash. Note this only works for products purchased from our Zengobi web store, not from the Apple Mac App Store which has its own integrated receipt mechanism.

Installing Curio

Downloading and Installation

  1. Using your browser, download the latest Curio (or an earlier release) from the Zengobi website.
  2. Curio will appear in your browser’s Downloads folder, automatically uncompressed by your browser. If it was not uncompressed then double-click the zip file to allow the default macOS unarchiver to unzip the download. Please note that using alternative unzipping apps such as EncryptedZip may cause issues.
  3. Using the Finder, drag-and-drop Curio from your Downloads folder to your Applications folder. Other utilities such as PathFinder cannot be used to perform this move as only the Finder will clear the Gatekeeper restriction.
  4. Optionally, to create a shortcut on your Dock, drag Curio from your Applications folder to the Dock to create the shortcut.
  5. If you’ve purchased a license key, you can copy and paste your key into the License dialog via Curio’s Curio > License menu item.

Access to Contacts, Calendar, and Reminders

Curio can provide additional functionality if you give it permission to access your Contacts, Calendar, and/or Reminders. With access to Contacts, if you double-click a dragged-in contact, Curio can launch Contacts and show that contact to you. With access to Calendar and Reminders, Curio can sync your project tasks with a specified calendar and reminder list. macOS will automatically ask you the first time you attempt to use a feature in Curio that requests this access. You can refuse and Curio will not have access. You can also enable or disable Curio’s access to the individual applications via System Preferences > Security & Privacy > Privacy. Curio does not send any information from those applications to Zengobi’s servers.

Looking for a Curio Release?

If you lost your license key we can send it to you.

Release Latest Version macOS Requirements Download Release Notes
Curio 12 12.2.1 Sierra (10.12) → Mojave (10.14) Download Release Notes
Curio 11 11.4.4 Yosemite (10.10) → High Sierra (10.13) Download Release Notes
Curio 10 10.3.3 Yosemite (10.10) → High Sierra (10.13) Download Release Notes
Curio 9 9.4.9 Mavericks (10.9) → High Sierra (10.13) Download Release Notes
Curio 8 8.6.4 Lion (10.7) → Yosemite (10.10) Download Release Notes
Curio 7 7.4.4 Leopard (10.5) → Mountain Lion (10.8) Pro - Standard - Core Release Notes
Curio 6 6.4 Leopard (10.5) → Snow Leopard (10.6) Pro - Standard Release Notes
Curio 5 5.4.7 Leopard (10.5) → Snow Leopard (10.6) Pro - Standard Release Notes
Curio 4 4.2.4 Leopard (10.5) → Snow Leopard (10.6) Pro - Standard - K12 Release Notes

Note that Curio 8 and older versions will not operate correctly on macOS Sierra (10.12) or newer due to a change Apple made to their internal text framework. Purchase a discounted Curio upgrade to get up and running again.