Trademath Privacy Policy

This policy covers Trademath, the Android application published on Google Play under the package name io.stonebyte.trademath. It does not cover this website; the site has its own privacy policy, described in section 9 below.

1. Who we are

Trademath is developed and published by Stonebyte LLC, a limited liability company registered in the State of Wyoming, USA, listed on Google Play as Stonebyte. Our registered address is 30 N Gould St PMB N, Sheridan, WY 82801-6317, USA, and you can reach us at [email protected].

2. What the app collects

Nothing. Trademath does not collect, transmit or share any personal or sensitive user data. There is no account to create, no sign-in screen, no profile, no identifier assigned to you or to your device, and no usage statistics of any kind.

3. What stays on your device

The app stores what you type into it: the dimensions you enter, the jobs you save, the material prices you set and your settings such as units, default waste allowance and theme. All of it is written to the app's own private storage on your device, where no other app can read it, and none of it ever leaves the device through the app.

You can erase this data at any time from Android's settings, under Apps → Trademath → Storage → Clear storage, and uninstalling the app removes it entirely. Because we never receive the data, there is nothing for us to delete on our side and no deletion request to submit.

4. No network access

Trademath cannot connect to the internet. The app declares no permissions at all in its manifest — including no INTERNET permission — so it is technically incapable of sending anything anywhere, and it works exactly the same with the phone in airplane mode.

5. No analytics, no advertising, no third-party SDKs

The app contains no advertising, no in-app purchases, no analytics or crash reporting service, and no software development kits belonging to other companies. It does not read the Android advertising ID and does not declare the com.google.android.gms.permission.AD_ID permission. Nothing about you is profiled, sold or rented, because nothing about you is gathered in the first place.

6. Estimates you export

Trademath can turn a saved job into a PDF or a plain-text summary. The file is created on your device by the app itself. What happens to it afterwards is entirely your decision: it goes only where you send it, using whichever app you choose from the Android share sheet. We never see it.

7. Children

Trademath is a work tool for construction trades and is not directed to children. We do not knowingly collect information from anyone, including children, because the app collects no information at all.

8. Changes to this policy

If a future version of the app changes what it does with data, this page will be updated before that version is published, and the effective date above will change with it. The current version of the policy is always the one published on this page.

9. This web page is not the app

The statements above describe the Android application. Reading this page is a visit to stonebyte.io, which is a separate matter: like the rest of our website it uses privacy-conscious Google Analytics, described in full in the website privacy policy. The app itself does none of that.

10. Contact

Questions about this policy, or about Trademath in general, are welcome at [email protected].

← Back to home