Privacy Policy

Last updated: 19 June 2026

ChartBuddy is operated by Noesis Trading Co. Ltd (“we”, “us”). This policy describes what data the ChartBuddy mobile application collects, how it is used, and the rights you have.

Summary in one line

ChartBuddy is a fully local app. We do not ask you to create an account, and we never see or store your personal information. Your progress, streaks, saved topics, settings, and quiz scores all live on your device only.

What ChartBuddy does NOT collect

For clarity, we do not collect any of the following:

What is collected by the services we use

ChartBuddy stores all of your content on your device, but four third-party services receive limited, anonymous data to do specific jobs. None of this data identifies you personally, and none of it is shared with us in identifiable form.

RevenueCat (in-app purchase verification)

When you tap “Unlock ChartBuddy” or “Restore Purchases”, RevenueCat receives an anonymous app-scoped device identifier so it can verify your one-time purchase and unlock the app for you. They do not receive your name, email, or any other personal information. See revenuecat.com/privacy.

Apple App Store / Google Play (payment processing)

Your actual payment is processed by Apple or Google. We never see your payment details. Refer to Apple's privacy policy and Google's privacy policy for details on how each store handles payments.

Meta (app-promotion advertising)

ChartBuddy includes the Meta SDK so we can measure how well any Facebook or Instagram ads we run perform and reach new users. Meta receives anonymous, app-scoped events (for example, that the app was opened, that the paywall was viewed, or that a one-time purchase was completed). To attribute these to the right ad campaign, the app may also share your device advertising identifier with Meta. On iOS we ask your permission first through Apple's App Tracking Transparency prompt, and you can decline; the app works exactly the same either way. None of this is linked to your name or any personal information. See Meta's privacy policy.

Sentry (crash and error reporting)

If ChartBuddy crashes or runs into an unexpected error, Sentry receives a diagnostic report so we can find the problem and fix it. That report covers the technical details of what went wrong: the type of error, where in the app it happened, your device model, and the operating system and app version you are running. It does not include your name, your saved topics, your quiz scores, or anything you type. We have turned off the collection of personal identifiers such as your IP address. See sentry.io/privacy.

Children

ChartBuddy is not directed at children under 13 and we do not knowingly collect any data from them. The minimum age to use the app is 13.

Your rights

You can delete all your local data at any time from inside the app: Settings → “Delete all my data”. This permanently erases your progress, streaks, saved topics, quiz scores, and settings on your device. Your one-time purchase is not affected and can be restored at any time using the “Restore Purchases” button.

Changes to this policy

We may update this policy occasionally. Material changes will be reflected by an updated date at the top of the page. Continued use of the app after a change constitutes acceptance of the updated policy.

Contact

Questions about this policy? Email support@chartbuddy.co.