CSCalcuL, by CS Software Studio · Last updated: 26 September 2026
CSCalcuL is a calculator. It has no accounts, and it never sends anywhere what you calculate. The only data that leaves your device is what Google collects to serve ads, and only if you consent to it; the exchange-rate lookup carries nothing about you.
Everything below is stored on your device only. It is never sent to us or to anyone else, and it is gone when you uninstall the app:
| What | Why |
|---|---|
| Your preferences (theme, decimal separator, open module, remember the last operation, vibration) | So the calculator behaves the way you left it |
| Your last operation, if you turn on "Remember last operation" | To restore an unfinished calculation when you reopen the app |
| Your calculation history, while "Save history" is on | To look back at or reuse a result. You can clear it or turn it off in Settings |
| The last exchange rates downloaded | So the currency converter works offline |
The numbers you type are never transmitted or logged anywhere. There is no usage analytics, no telemetry and no crash reporting. From version 3.0 on, the app also opts out of Android backups: none of the above is copied to your Google account.
When you open the Currency converter, the app asks our server for the reference exchange rates published by the European Central Bank. It does so at most once every six hours, and never at startup or from other screens.
The request carries no data about you: no identifiers, no amounts, no currencies you pick. The conversion happens on your phone. As with any internet connection, the server receives your IP address in order to reply; we do not log or keep it. The server is hosted by Cloudflare, which processes it only to deliver the response and protect the service (Cloudflare privacy policy).
The app shows ads through Google AdMob. To do that, Google may collect and process:
We do not receive any of that data. Google gives us aggregate figures only: how many ads were shown and how much they earned. No identifiable person appears there.
You can read how Google handles this data in How Google uses information from sites or apps that use our services.
The app does not access your microphone, camera, contacts, files or precise location. The only permissions it declares are internet access — needed for ads and exchange rates — and vibration.
Apple devices have a permission of their own, App Tracking Transparency, separate from the consent described below and asked separately. The first time you open the app, the system will ask whether you allow CSCalcuL to track your activity across other companies' apps and websites.
You can say no, and the calculator works exactly the same. The only difference is that ads stop being personalised: you still see them, they are just no longer chosen using your IDFA.
You can change your mind at any time in Settings › Privacy & Security › Tracking on your iPhone or iPad, where CSCalcuL has its own switch.
If you are in the European Economic Area, the United Kingdom or Switzerland, the first time you open the app you will see a Google consent form where you can accept or refuse the use of your data for advertising purposes.
⋮ menu — and tap
Privacy options. That entry appears whenever the rules in your country
require it.
If you refuse consent, the app keeps working exactly the same: no calculator feature is lost.
You may exercise the rights of access, rectification, erasure, restriction, portability and objection granted to you by the GDPR.
It is worth being clear about who to exercise them against: we hold no data about you, so there is nothing we could hand over or delete. Your preferences and history live on your phone and are removed by uninstalling the app or clearing its data in the system settings. The advertising data is held by Google, and is managed by withdrawing consent as described above, or from your Google account ad settings.
CSCalcuL is not directed at children under 13 and does not knowingly collect data from children.
If this policy changes, this page and the date in the header will be updated. Meaningful changes will also be reflected in the release notes on Google Play.
For any privacy question: magisperez73@gmail.com