Application privacy policy

KOLLOID OLTIN MCHJ · In force from 30 September 2026

KOLLOID OLTIN MCHJ publishes the Kolloid Oltin application as a free helper for people who buy, wear and give jewellery. The application was designed with a single principle: it must be useful without knowing anything about you. This document sets out what that means in practice.

Principles

1. Offline by design. The application performs every function — price estimates, size conversion, care articles, gift reminders — on the device. It does not require a network connection and does not transmit data to us or to anyone else.
2. Nothing collected. We do not gather personal data, usage statistics, device identifiers, advertising identifiers or location. There are no analytics, advertising or crash-reporting components in the application.
3. Your data belongs to you. Whatever you enter is stored only on your phone and can be removed by you at any moment.

What the application keeps on your phone

The application stores the following in its private storage, solely so the features work between sessions:

1. the price per gram and jeweller's mark-up you last entered in the estimator;
2. ring sizes you save, with the names or labels you give them (for example "Mother", "Wedding ring");
3. dates you add to the gift calendar, with their titles and the reminder setting;
4. articles marked as favourites;
5. interface language and theme.

Names and dates in the size list and gift calendar are entered by you and stay on the device. They are not synchronised, backed up by us or read by the application for any purpose other than showing them back to you.

Reminders

If you switch on reminders for the gift calendar, the application schedules local notifications on the device. This uses the standard Android notification and exact-alarm capabilities and does not involve any server; the notification text comes only from what you typed.

Permissions

The application may ask for permission to show notifications (for reminders). Nothing else is requested. The "Call" and "Route" buttons on the store screen hand over to the dialer or maps application via a system intent; the application does not access contacts, call history, location, camera or files.

Deleting information

Saved sizes, calendar entries and favourites can be deleted one by one inside the application. Clearing the application's data in Android settings or uninstalling the application erases all stored information at once. KOLLOID OLTIN MCHJ holds no copy, so there is nothing further to delete or request.

Prices and estimates

Price estimates are indicative and are based on values you enter. They are not an offer and do not replace the price set in the store for a specific piece.

Children

The application is intended for adult customers. It is not directed at children and, since it collects no data, does not process children's personal data.

Amendments

Any change to the way the application handles data will be reflected on this page with a new date and mentioned in the store listing of the application.