Privacy Policy
Effective date: March 12, 2026
Overview
AlgoViewer is an educational app designed to help you learn algorithms through interactive visualizations. Your privacy matters, and this policy explains how the app handles your information.
Data Collection
AlgoViewer does not collect, store, or share any personal data. Specifically:
- No personal information is collected (name, email, phone, etc.)
- No usage analytics or tracking of any kind
- No third-party SDKs that collect data
- No cookies or identifiers
- No account creation required
- All content works offline — no network requests from the app itself
Data Storage
All data within the app (algorithm configurations, quiz progress, preferences, and purchase status) is stored locally on your device using UserDefaults and iCloud, and is never transmitted to external servers.
In-App Purchases
AlgoViewer offers an optional one-time in-app purchase (“AlgoViewer Pro”) to unlock all premium content. Payment processing is handled entirely by Apple through the App Store. AlgoViewer does not process, store, or have access to your payment information. Purchase verification uses Apple’s StoreKit framework, which communicates only with Apple’s servers. You can restore a previous purchase at any time using the “Restore Purchase” option in the app.
iCloud Sync
AlgoViewer uses iCloud to sync your quiz progress and preferences across your devices. This data is stored in your personal iCloud account and is not accessible to us. For more information about iCloud security, visit apple.com/icloud/security.
Third-Party Services
AlgoViewer does not integrate with any third-party advertising networks or analytics platforms. The only external service used is Apple’s App Store / StoreKit for processing in-app purchases, which is governed by Apple’s own privacy policy.
Children’s Privacy
AlgoViewer does not collect data from any user, including children. The app is rated 4+ and is safe for all ages.
Changes to This Policy
If this policy is updated, the changes will be reflected here with an updated date.
Contact
For privacy questions, please contact: slekens@gmail.com
This privacy policy applies to the AlgoViewer app available on the Apple App Store.