What this policy covers
This policy explains how the Scale Calculator app for Android (package com.calculatescale.app) handles your information. The app is developed and published by Tomasz Warezak, who also runs CalculateScale.com, and you can find it on Google Play.
It describes the app only. The website you are reading this on is a separate matter: it uses cookies and analytics, and those are covered by the website privacy and cookie policy.
The short version
- There is no account, no sign-up and no login.
- The scales, lengths and units you type stay on your phone and are never sent anywhere.
- The calculator screen shows one advertising banner from Google AdMob. Serving it involves Google, and the sections below say exactly what that means.
- We run no server of our own, so nothing about you reaches us.
What we collect ourselves
Nothing. The app talks to no server of ours, contains no analytics and no crash-reporting library, and we never see the scales and measurements you work with.
What does reach us are counts: how many people installed the app, how it is rated, how often it crashed, how many ads were shown and what they earned. Google compiles those figures and hands them over in aggregate form that identifies no one.
Advertising
The calculator screen carries a single banner at the bottom, served by Google AdMob through the Google Mobile Ads SDK. It is the only third-party component in the app and the only reason the app connects to the internet at all.
To fill that banner, Google receives data from your device and processes it under its own responsibility:
- the advertising ID of the device, a resettable identifier that Android provides for this purpose;
- the IP address, from which Google derives an approximate location, usually down to the city;
- technical details of the device and the app, such as the model, the Android version, the language and the app version;
- what happened to the banner: that it was requested, shown, or tapped.
Google uses this to select and measure ads, to cap how often you see the same one and to catch fraudulent clicks. Depending on the choice described in the next section, it may also use it for personalised advertising. The details are in How Google uses information from sites or apps that use our services and in the Google Privacy Policy.
We have no access to any of it. Our AdMob account shows how many ads were shown and what they earned, nothing about who saw them.
Nothing you type takes part in this. Your numbers are not sent with the ad request and are not used to target ads.
Your choice about ads
If you are in the European Economic Area, the United Kingdom or Switzerland, the app shows Google's consent form the first time you open it and asks whether Google may use your data for personalised ads. You can say no. The banner still appears, but it is filled with a non-personalised ad, chosen from the context of the moment instead of from a profile.
Wherever that form applies, the app also keeps a Privacy options entry in the menu in the top right corner. Open it whenever you want to see your answer again or change it.
Separately from the app, Android lets you reset or delete the advertising ID in your device settings, under privacy and then ads (the exact path differs between phones). Deleting it stops apps, this one included, from receiving an identifier at all.
What stays on your device
Three kinds of information live on your phone while you use the app:
- The numbers you type. Scales, lengths and units are held in memory only, for as long as the app is running. Nothing you type is written to storage, and nothing you type leaves the device.
- The settings you choose in the app, such as the interface language or whether the welcome screen should appear again. These are saved so the app can remember how you like to work. They are preferences rather than personal data, and they sit in the app's private storage, where other apps cannot read them.
- Your answer to the consent form, stored on the device by Google's consent library so that you are not asked again at every launch.
Android may include this app data in the device backup that the system makes to your own Google account, together with the data of your other apps. That backup belongs to you and is handled by Google under its own terms. We have no access to it, and you can switch device backup off in your Android settings.
Uninstalling the app removes its data from the device.
Permissions the app requests
Android installs the app without asking you to approve anything, because none of these permissions reaches your personal content. They all come with the advertising:
INTERNETandACCESS_NETWORK_STATE— to request the banner and to notice when the device is offline. The calculator itself needs no connection; in airplane mode you simply get no banner.com.google.android.gms.permission.AD_ID— to read the advertising ID described above.ACCESS_ADSERVICES_TOPICS,ACCESS_ADSERVICES_ATTRIBUTION,ACCESS_ADSERVICES_AD_ID,WAKE_LOCKandFOREGROUND_SERVICE— added by Google's libraries so that an ad request and its measurement can finish even if you leave the app.
The app asks for no access to your contacts, precise location, camera, microphone, photos or files.
Who receives your data
Google, in two roles: as the provider of the advertising inside the app, and as the operator of the store the app is distributed through. No one else. There is no other third-party service in the app, no data broker and no server of ours.
Children
The app is a general-purpose calculation tool. It is not directed at children and is not part of any Google Play programme for families. If you are setting up a phone for a child, note that the app shows advertising served by Google.
Your rights and how to reach us
Data protection law gives you the right to see, correct or delete the personal data a company holds about you. We hold none, so there is nothing for us to look up, hand over or erase.
For the data Google processes for advertising, the routes are Google's: the consent form in the app, the advertising ID controls in your Android settings, and the contact details in the Google Privacy Policy.
If you have a question about this policy or about the app, write to [email protected].
Changes to this policy
If a future version of the app does something that affects your privacy, we will update this page and change the date below before that version is released. This text replaces the version dated 12 August 2026, which described the app as it was before it carried advertising.