Frequently Asked Questions

Need Some Help?

Send email to and we’ll write back as quickly as possible. Or check out our Forums and ask the Zengobi community.

Lost Your License Key?

Fill out the form here and we’ll email it back to you in a flash.

Looking for an Academic Discount?

With our new simplified pricing, we no longer have a separate academic store. Instead our new, greatly reduced prices are available to all customers.

If you are interested in deploying Curio across your entire K-12 (primary/secondary) domestic or international school, Zengobi now offers a low-cost annual site license program specifically for K-12 schools.

Curio and Yosemite

Yosemite, OS X 10.10, is a major new release of Apple’s Mac operating system launching in the Fall of 2014. While Curio 9 runs very well on Yosemite, earlier versions of Curio are not supported and will not run due to the changes Apple has made to the OS. For example, while Curio 8 runs on Lion (10.7), Mountain Lion (10.8), and Mavericks (10.9), it does not run on Yosemite.

Curio 9’s codebase has been completely updated, cleaned up, and modernized to work with both Mavericks and Yosemite, in fact Curio 9 requires Mavericks at a minimum. On top of all of those updates, Yosemite required a number of additional code changes to Curio 9 for full compatibility. Yosemite is definitely a major OS X release.

Beyond the internal compatibility changes, the Curio 9 user interface has been through a major update for Mavericks and Yosemite and looks great with Yosemite’s new design. Please see the Curio 9 release notes for all the details, including many, many screenshots.

Installing Curio on OS X

Downloading and Installation

  1. Using your browser, download Curio from the Zengobi website.
  2. If you have installed Curio 9 or above then you can simply launch Curio from your Downloads folder and Curio will ask you if it should move itself to the Applications folder. If an existing Curio app with a different major version is already in your Applications folder then that app will be renamed to include its version number ("Curio 8") before the move occurs. Alternatively, you can manually drag-and-drop the Curio application from that folder to your Applications folder to install it.

Access to Contacts, Calendar, and Reminders

When you first launch Curio, OS X will ask if Curio can have permission to access your Contacts. We use the Contacts framework to find out who "me" is, so we can populate your Curio project’s Resources inspector with your name and email to use as a default resource. We also use the Contacts framework when you double-click a dragged-in contact so we can launch Contacts and show that contact to you. That’s it. We do not scan your contacts for any nefarious marketing reasons or to send any contact information to Zengobi’s servers.

Curio can sync your tasks with Calendar and Reminders however, just like access to Contacts, you will need to give permission for this to occur.

Permissions for all of this can also be set via System Preferences > Security & Privacy > Privacy.

Gatekeeper and Pre-Curio 8 Curio Releases

If you attempt to launch Curio 7 or earlier on a Lion (OS X 10.7.5) system or above then Apple’s Gatekeeper will block the launch of Curio since those early releases do not have an embedded Developer ID.

To resolve this, instead of double-clicking to launch Curio, right-click or Control-click on the Curio icon in the Finder and choose Open, then confirm the launch in the dialog that appears. You only need to do this the very first time you launch it so the OS knows that Curio is trusted.

Looking for an Old Product?

Here are our prior releases if you need to restore a previously purchased product.
If you lost your old license key we can send it to you.

Curio 8Release Notes
OS X 10.7.5 (Lion) → OS X 10.9 (Mavericks)
Curio 8.6.3
Curio 7Release Notes
Edition OS X 10.5 (Leopard) → OS X 10.8 (Mountain Lion)
ProfessionalCurio 7.4.4 Pro
StandardCurio 7.4.4 Standard
CoreCurio 7.4.3 Core
Curio 6Release Notes
Edition OS X 10.5 (Leopard) → OS X 10.6 (Snow Leopard)
ProfessionalCurio 6.4 Pro
StandardCurio 6.4 Standard
Curio 5Release Notes
Edition OS X 10.5 (Leopard) → OS X 10.6 (Snow Leopard)
ProfessionalCurio 5.4.7 Pro
StandardCurio 5.4.7 Standard
Curio 4Release Notes
Edition OS X 10.5 (Leopard) → OS X 10.6 (Snow Leopard)
ProfessionalCurio 4.2.4 Pro
StandardCurio 4.2.4 Standard
K-12Curio 4.2.4 K12
Curio 3Release Notes
Edition OS X 10.5 (Leopard) OS X 10.3 (Panther) → OS X 10.4 (Tiger)
ProfessionalCurio 3.2.4 ProCurio 3.2.2 Pro
HomeCurio 3.2.4 HomeCurio 3.2.2 Home
K-12Curio 3.2.4 K12Curio 3.2.2 K12
BasicCurio 3.2.4 BasicCurio 3.2.2 Basic