Terms of use
Last updated October 2, 2026
Curivana is provided by NerdQuad (Jerry Crews) for adults 18 and older. Questions about these terms can be sent to jerry@nerdquad.com.
Current private preview
The app and curriculum are in development. Preview content, features, and availability may change. All courses are included in the current private preview and purchases are disabled. This does not promise that future editions will have the same access terms.
General education
Lessons, questions, diagrams, and explanations are for general education. They are not individualized medical, legal, or financial advice. Content may contain errors or incomplete interpretations. Follow the sources and contact us about corrections.
Curriculum review and learner testing are ongoing. Completion, practice scores, and review estimates do not establish expertise or guarantee learning outcomes. Curivana does not promise to reduce screen time or block other apps.
Optional generated explanations
Generated explanations may be inaccurate. They do not grade answers or replace the authored lesson. Use the authored explanation and cited sources when checking an idea.
Your learning history
You control what you write in reflections and what you export or share. Keep backups if your history matters to you. Device changes, deletion, software changes, or interruptions to Apple services can affect availability. Our privacy policy describes storage and optional services.
Using the material
You may use the app and included materials for your personal learning. Rights in third-party material remain with the respective owners, as described in applicable notices. Source links are provided for reference and do not imply endorsement.
Planned Library subscription
For the planned public edition, How Evidence Works will remain free. The Curivana Library subscription will unlock additional published courses. Monthly and yearly plans provide the same library access.
Planned United States pricing is US$5.99 per month or US$39.99 per year. Prices in other countries and regions may differ. The App Store will show your localized price, billing period, and purchase terms before you confirm. Purchases remain disabled in the current private preview.
When available, payment will be charged to your Apple Account. The monthly plan renews every month and the yearly plan renews every year until canceled. Apple may charge for renewal during the 24 hours before the next billing period begins. Manage or cancel through iPhone Settings → your name → Subscriptions, or the app’s Manage subscription option. See Apple’s cancellation instructions and the Apple Media Services terms.
After subscription access ends, you can continue reviewing premium lessons you completed, including their explanations and associated practice, provided your completion history remains available on your device or is restored from iCloud or an exported backup. Uncompleted premium lessons require active access. Restoring a purchase restores eligible subscription access; it does not restore learning history. Deleting your learning history or removing the app does not cancel a subscription.
Apple distribution
Where applicable to an App Store-distributed edition, Apple’s standard End User License Agreement governs the software license.
Updates and contact
We may revise these terms as the app changes. The current version and update date will remain on this page. Contact jerry@nerdquad.com for support or questions. Nothing in these terms removes rights that cannot be excluded under applicable law.