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Privacy Policy

Effective date: July 6, 2026

This policy covers two things published by the same person: the k8s.guide website and the K8s Guide iOS app. They're built differently and collect different (very little) data, so they're described separately below.

If you have questions about anything on this page, email aaron@braundmeier.com.

K8s Guide (iOS app)

K8s Guide is a Kubernetes certification study app for iPhone and iPad. It does not have a server, a login system, or an account of any kind.

What's stored, and where. Your quiz history, lesson progress, bookmarks, streaks, and app settings are stored on your device and, if you're signed into iCloud, synced through Apple's CloudKit to your own private iCloud database. That data is associated with your Apple ID, not with any account or server operated by this app. It is never sent to me, and I have no way to access it.

Credly (optional). If you choose to enter your Credly profile URL to track Kubestronaut badge progress, the app sends that URL to Credly's public API (credly.com) to fetch your badge data. This only happens if you enter a URL yourself, and the only thing sent is the URL/username you typed in. That request is governed by Credly's own privacy policy. I don't see or store the response anywhere but your device.

Notifications. Study reminders are scheduled and generated entirely on your device using Apple's local notification system. No push notification service is used, no device token is collected, and no notification content is sent anywhere.

What the app does not do:

  • No account creation, sign-up, or login
  • No advertising or ad SDKs
  • No analytics, tracking, or crash-reporting SDKs of any kind
  • No data is sold, shared, or used for advertising
  • No data collection directed at children

Deleting your data. Settings → Reset All Progress deletes your quiz history, lesson progress, bookmarks, and streaks from both the device and your private iCloud database. Deleting the app removes everything stored locally; iCloud data can also be managed or removed directly through your device's iCloud/Apple ID settings.

k8s.guide (website)

The website is a set of static Kubernetes reference and news pages. Unlike the app, it does use a couple of standard third-party services:

Google Analytics. The site uses Google Analytics to understand aggregate traffic (pages viewed, rough location, device type). This may set cookies in your browser. You can opt out using your browser's cookie settings or the Google Analytics opt-out browser add-on.

Newsletter. If you subscribe to the newsletter, your email address is collected and stored by Buttondown, the third-party service that sends it, solely to deliver newsletter issues to you. Every issue includes an unsubscribe link. See Buttondown's privacy policy for details on how they handle that data.

What the website does not do: there's no login system, no comments, and no forms other than the newsletter signup above. Nothing else on the site collects personal information.

Your rights and choices

Regardless of where you are, you can email aaron@braundmeier.com at any time to ask what data (if any) is associated with you. In practice this is limited to your newsletter subscription, since the app itself stores data only on your device and in your own iCloud account, out of my reach entirely.

If you're in the EU/EEA, UK, or California, the same contact applies for any access, correction, or deletion requests related to the newsletter list; there is no other personal data collected by either product for me to act on.

Changes to this policy

If this policy changes, the "Effective date" above will be updated. Material changes (e.g., adding a new third-party service) will be reflected here directly. There's no separate mailing list for policy updates.