Last updated on May 12, 2026
Your privacy is important to Zengobi. This Privacy Policy details how we collect, use, and store your information. If you have questions or concerns please contact us.
In this document, personal information is data that can be used to identify or contact a single person, while non-personal information is data in a form that does not, on its own, permit direct association with any specific individual.
For Zengobi website app sales, we rely on Paddle to act as our Merchant of Record. When you purchase a Zengobi product, they handle the checkout process, including payment processing, fraud detection, handling of taxes, and compliance with local laws and regulations. You can view Paddle’s privacy policy here and their GDPR statement here.
Once Paddle authorizes payment for a Zengobi product, it establishes a direct, secure connection to our server so we can process the order and return a generated product license key. Via this connection we receive your email address, along with non-personal information such as country of purchase, price paid, and quantity ordered. Zengobi does not receive payment details such as your credit card number, nor do we have access to that information via Paddle’s vendor interface.
We also receive the state of the Paddle opt-in checkbox which asks if you’d like to receive product updates and offers from Zengobi via email. This option is unchecked by default and is completely optional. If you do opt-in, it is possible to opt-out at any time.
Some orders may involve supplemental information that you fill out at the beginning of the order process, which will also be sent over that same secure connection. For example, to offer discounted upgrade pricing and appropriate upgrade options, we request your current license key and registered email. To offer discounted academic pricing, we request your academic credentials.
We also rely on Apple to sell or provide products or services. You can view Apple’s privacy policy here. We receive no personal details from Apple regarding sales or subscriptions, only that a financial transaction of a specified value has occurred.
Applications sold from the Zengobi website may send an activation request to Zengobi’s server when you enter a license key to unlock the product, and may be repeated from time to time by already activated products.
These secure queries to our server verify that you are a legitimately licensed owner of the Zengobi product by confirming the validity of your license key, and returns current license status information, as that information may change if upgrades or crossgrades are purchased. The response from the server will also indicate if your license allows access to a newer app release. If so, the app update itself is downloaded and installed via the open source Sparkle framework.
During this same secure query with Zengobi’s server, if activating an installation for the first time, the server will automatically send an email to the license’s registered email address containing the activating computer’s name, model, and IP address. This information is not stored and is only used for the activation email to the license holder.
For applications sold at Apple’s App Stores, verification of your purchase may occur by processes and servers managed by Apple.
In addition, our applications sold via subscription from the Apple Mac App Store use RevenueCat’s subscription framework and service to handle the complexities of receipt validation, status tracking, and subscription management so that Zengobi can offer robust subscription functionality in our products. RevenueCat’s privacy policy is here.
Apple’s Mac App Store app background process automatically handles checking for app updates, and downloading and installing app updates.
You can view Apple’s privacy policy here.
Curio may send anonymized trial analytics to Zengobi’s server so we can understand how often trials are started, expire, and lead to purchase or subscription activity. These events may include non-personal information such as the app version, macOS version, purchase channel, selected edition or subscription plan, and a one-way analytics installation hash that is separate from Curio’s license activation identifier. These analytics events do not include your name, email address, license key, computer name, project names, file names, document contents, or payment details.
Our product Curio can provide additional functionality if you give it permission to access your Contacts, Calendar, and/or Reminders.
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 Settings > Security & Privacy > Privacy.
Curio does not send any information from those applications to Zengobi’s servers.
Anyone can subscribe to Zengobi’s mailing list to learn more about our products and offers. No purchase is necessary. When you sign up, you must (1) opt-in to the emailings and, (2) indicate that you agree to our Terms and Conditions and this Privacy Policy. Both of these options are unchecked by default.
After submitting your email address, we will send you a confirmation email to verify your email address and allow you to confirm the subscription by clicking a confirmation link. Only after clicking the confirmation link will your email address be added to our mailing list. We use this double opt-in mechanism as a stronger verification of opt-in as these are submitted from our general mailing list subscription page, as opposed to the single opt-in required during the product purchase process.
The Zengobi Forums discussion forums are managed using the Discourse software service running on one of our servers. We provide these forums so existing users and potential users of Zengobi’s products can post questions and share information about our products.
We use Fathom Analytics to compile visitor statistics. Fathom does not use cookies, unlike most analytics services like Google Analytics, and is fully GDPR, CCPA, ePrivacy, PECR (and more) compliant. Their privacy policy is here.
As is true of most internet services, our web server automatically gathers and records industry-standard logs of web page visits, including IP addresses, browser type and language, Internet service provider, referring and exit websites and applications, operating system, date/time stamp, and clickstream data. We automatically rotate these logs frequently, securely removing older logs, while still giving time for automated log analyzing tools (e.g., fail2ban) to scan and impose automatic security measures. We use this information primarily to administer the site and assist with troubleshooting.
Our site, products, and services are all directed to people who are at least 13 years old or older. If you are under the age of 13, per the requirements of COPPA (Children’s Online Privacy Protection Act), do not use this site.
If you have questions or concerns regarding this Privacy Policy please contact us.
Zengobi may update its Privacy Policy from time to time. When we change the policy in a material way, a notice will be posted on our website along with the updated Privacy Policy.