CalcHub: All Calculators

Privacy Policy

Effective date: 2026-09-25

CalcHub ("the app") is published by BlueFireLab. This policy explains what the app does and does not do with information.

1. The short version

CalcHub works offline. Your calculations, favourites, and history stay on your phone — we do not receive them, and there is no account to create. The only data that leaves your device is what Google's advertising SDK needs to show and measure ads.

2. What stays on your device

CalcHub may store the following information in the app's private storage:

  • Calculations you save, including the values you entered;
  • Your favourite calculators and recently used calculators; and
  • Your settings, including theme, unit system, and currency.

This information is stored using Android's standard database and preference systems. It is not transmitted to the publisher's servers. Clearing history in Settings deletes saved calculations immediately; uninstalling the app removes the remaining app data from the device.

If you have Android's automatic backup enabled, app files may be included in your own Google account backup or device transfer, subject to Google's terms and the backup settings on your device. The publisher does not operate or receive your Google backup account.

3. What is collected

Advertising

CalcHub shows ads supplied by Google AdMob. The Google Mobile Ads SDK may process your device's advertising ID and technical information such as device model, operating system version, coarse region, app and ad interactions, diagnostics, and ad performance in order to serve and measure ads. The exact processing depends on the SDK version, ad configuration, region, and your choices in any consent message.

Google's own privacy policy governs Google's processing: https://policies.google.com/privacy .

You can reset or delete your advertising ID at any time in Android Settings → Privacy → Ads. Where required by applicable law, CalcHub uses a consent message before requesting personalized ads. If the app provides an advertising privacy choices entry point, you can use it to review or change the choices available to you.

Analytics

The current product specification records anonymous usage events such as which calculator was opened, whether a calculation completed, how long a search query was, and how many results it returned. Search terms themselves are not recorded. These events carry no name, email, account, or device identifier that the publisher could use to identify you.

Before publication, confirm that the production build actually uses a remote analytics provider. If it does not, remove or revise this section so that the policy matches the shipped code. If a provider is added later, update this policy and the Google Play Data safety declaration.

4. What is never collected by the publisher

In the current version, the publisher does not collect or receive your name, email address, phone number, contacts, photos, files, precise location, or any value you type into a calculator.

5. Children

CalcHub is a general-purpose utility and is not directed at children under 13. We do not knowingly collect personal information from children. If your target audience or distribution regions change, review this section and the applicable Google Play Families requirements before release.

6. Your rights

The publisher does not hold your locally stored calculation history or calculator values on its own servers. You control local data from the device: clear your history in Settings, reset or delete your advertising ID in Android Settings, manage available advertising privacy choices, or uninstall the app.

Depending on where you live, you may have rights under the GDPR, CCPA, or similar laws in relation to advertising data processed by Google. Google's policy and privacy controls explain how to exercise rights relating to Google's processing. You can also contact the publisher using the address below for privacy questions.

7. Changes to this policy

If this policy changes, the updated version will be posted at this URL with a new effective date. Material changes may also be noted in the app's release notes.

8. Contact

BlueFireLab

Privacy questions: sam@bluefirelab.com

9. Disclaimer

Calculations are provided for informational purposes only and should not be considered financial, medical, legal, or tax advice. Health calculations are general estimates for healthy adults and are not a medical diagnosis. Financial calculations do not account for every fee, tax, or lender-specific term. Always confirm figures that matter with a qualified professional.