Calqira Privacy Policy

Calqira is published by Croxal Digital Studio, an independent developer and the data controller under the GDPR for what this document describes. For any question or request about your data, write to contact@croxal.com.

Calqira stores two things, both inside its own private area on the device:

• Your calculation history, if you leave it switched on: for each entry, the module used, the expression you typed, the result and the date. The 200 most recent entries are kept; older ones fall off on their own.
• Your settings: language, region, unit system, theme, dark mode, number format, currency, sound, vibration, history on or off, large text, high contrast, reduced motion, decorations, tax rate, tip rate, degrees or radians, favourites and recently used modules.

None of it is sent to anyone, including us: no server receives it, because no server exists. Nor is it copied elsewhere by the system: Android's automatic backup is switched off for this app, and so is device-to-device transfer. The cost is deliberate — after a restore or a new phone, you pick your language, theme and rates again.

How to erase it

• History screen → clear all, or swipe a single line away.
• Settings → switch history off, and nothing is recorded at all.
• Uninstalling the app removes everything, permanently.

The app offers two places to write to us: Settings → Suggestions and bugs, and the address shown in About. Both open your own mail app on a draft: nothing goes until you press send, and you see the whole message before it does.

The draft from Suggestions and bugs carries a few technical lines below your text: the Calqira version, the Android version, the device model, and your language, region and theme. They are there so the problem can be reproduced — most faults in this app happen in one region and nowhere else. You can delete them before sending; the message goes all the same.

So if you write to us, we receive your email address, your message and, if you left them in, those technical lines. That is the only thing we keep on our side. The legal basis is our legitimate interest in answering you and in fixing what you report. Exchanges are deleted at the latest two years after the last message, and sooner if you ask.

A banner is shown at the bottom of the screen. It is served by Google AdMob, and it is the only part of the app that opens a connection to the outside world on its own. The message in section 3 leaves from your mail app, not from here.

What Google's SDK receives:

• the device advertising ID, which you can reset or delete in the Android settings;
• your IP address, from which Google infers an approximate location — the app requests no location permission and never touches GPS;
• technical information about the device: model, Android version, language, screen size;
• your interaction with the ad: impression, click.

What Google's SDK does not receive: what you type, your results, your history, your favourites, your settings. The ad request goes out with no targeting attached: the app sends no keyword, no content and no category derived from how you use it. Nothing you calculate goes into that request.

This data is processed by Google under its own rules, set out in how Google uses information for advertising and the Google Privacy Policy. We have no access to it: on our side we see only aggregate totals in the AdMob console — impressions, clicks and revenue — which identify nobody.

Rating the app. Calqira may, once, offer Google Play's rating window. It goes through the Google Play Store app on your phone. If you choose to leave a rating or a review there, it is sent directly to Google Play and published on the app's listing under Google Play's terms. The app neither receives nor keeps your rating. Closing the window sends nothing.

In the European Economic Area, the United Kingdom and Switzerland, a consent form provided by Google (the User Messaging Platform) appears on first launch. No ad is requested before you have answered, and if the form fails to load, no ad is requested at all: the space simply stays empty.

The legal basis for advertising is your consent. You can change or withdraw it at any time: Settings → Ad privacy options. Where local law does not require that consent, the form does not appear and the settings entry is hidden.

This is the complete list of permissions the app declares, and why each one is there.

Calqira requests no camera, no microphone, no contacts, no location, no access to your files, no phone and no calendar.

Calqira is not aimed at children and is not directed to them. The app gathers nothing of its own; what can leave the device is described in sections 3 and 4, and nothing else goes. If you are a parent and a question comes up regardless, write to us at contact@croxal.com.

The GDPR gives you rights of access, rectification, erasure, objection, restriction and portability over your personal data. Here is what that means in practice:

• On our side: we hold nothing but the exchanges described in section 3, if you have written to us. Ask for a copy, a correction or their deletion and we do it. Beyond that, we have nothing to hand over, correct or delete.
• On your phone: the data is yours and you act on it directly, by the means described in section 2.
• On the advertising side: withdraw or change your consent from Settings → Ad privacy options. You can also reset or delete your advertising ID in the Android settings (Google → Ads), and manage your preferences with Google through My Ad Center. A request concerning data held by Google has to be addressed to Google.

You also have the right to lodge a complaint with a supervisory authority — in France, the CNIL; in the United Kingdom, the ICO.

We transfer no data anywhere. Google may process the advertising data described in section 4 outside the European Economic Area, under the safeguards it puts in place and describes in its own privacy policy.

The data described in section 2 stays on your device until you erase it or uninstall the app. It lives in the app's private storage, kept apart from other apps by Android itself. We keep nothing on our side but the exchanges described in section 3, in a mailbox. There is no server holding anything about you, so there is no database to leak.

The date at the top of this document is the version in force. If something material changes — a new third party, or any data that starts leaving the device — this page is updated and the date changes with it.

Croxal Digital Studio
contact@croxal.com

We answer within thirty days at the most.