PRIVACY POLICY
Effective date: March 27, 2026
Last updated: March 27, 2026
Engineer Toolbox is an engineering utility app that provides circuit calculation, unit conversion, and related electronic design tools.
This Privacy Policy explains what information is collected when you use Engineer Toolbox and how that information is handled.
Engineer Toolbox does not require you to create an account and does not directly collect personal information such as your name, email address, phone number, or precise location through the app.
Calculation inputs, selected units, and app settings are stored locally on your device only to support app functionality and improve your experience.
Engineer Toolbox offers auto-renewable subscriptions through Apple's App Store.
Purchases, billing, and payment processing are handled by Apple. We do not receive your full payment card number or other sensitive payment credentials.
We may receive limited transaction status information from Apple, such as whether a subscription is active, expired, or restored, for the purpose of enabling subscribed features.
Engineer Toolbox does not use third-party advertising SDKs.
Engineer Toolbox does not use third-party analytics services to track your behavior inside the app.
If third-party services are added in a future version, this Privacy Policy will be updated before or when those services are introduced.
Some app data is stored locally on your device, including settings, selected circuit types, selected units, and subscription trial-related local state required for app behavior.
This locally stored information is not uploaded to our own servers.
We do not sell your personal information.
We do not share your app usage data with advertisers.
Information related to purchases is handled by Apple according to Apple's own policies and terms.
Engineer Toolbox is not directed to children under 13, and we do not knowingly collect personal information from children.
We may update this Privacy Policy from time to time. If we make material changes, the updated version will be posted at this page with a revised effective date.
If you have questions about this Privacy Policy, you can contact us at:
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Engineer Toolbox Privacy Policy