Last updated: 3rd of March 2026
This Privacy Policy explains how MTZCK LTD handles information in relation to the MTZCK Countdown mobile application for iOS and Android.
MTZCK Countdown is designed to provide users with a statistical life expectancy estimate based on information entered by the user. The app is built so that user input data is stored locally on the device and is not transmitted to MTZCK servers.
By using the app, you acknowledge this Privacy Policy.
1. Who we are
MTZCK LTD
Registered in the United Kingdom
Website: mtzck.com
Email: contact@mtzck.com
2. Scope of this Privacy Policy
This Privacy Policy applies to the MTZCK Countdown mobile application and related support communications.
It explains what information the app processes, what data is not collected directly by MTZCK, how data is stored, and what privacy rights users may have under applicable law.
3. Information processed in the app
To generate a life expectancy estimate, the app may ask you to enter the following information:
• date of birth
• sex
• country of residence
• smoking status
• exercise level
• alcohol consumption
This information is used solely for generating the estimate shown in the app.
4. Local storage of user data
The information you enter into the app is stored locally on your device.
MTZCK does not store this information on its own servers.
The app does not automatically upload your input data to MTZCK or to external servers for profile building, analytics, or advertising purposes.
5. Information we do not collect directly
MTZCK Countdown does not directly collect the following personal data through the app for its core functionality:
• full name
• email address
• postal address
• phone number
• exact location
• health records
• medical diagnosis data
• account registration details
The app does not require users to create an account in order to use its main functionality.
6. Purchases and third-party services
MTZCK Countdown is free to install. Users may make a one-time in-app purchase to unlock the full result or premium functionality.
Payments are processed exclusively through:
• Apple App Store
• Google Play Store
MTZCK does not process payment card details directly and does not store full payment card information.
The app may also use RevenueCat to manage purchase verification and entitlement status. In connection with in-app purchases, third-party providers such as Apple, Google, and RevenueCat may process limited technical and transaction-related information, such as:
• purchase receipts
• subscription or purchase status
• app user identifiers used for entitlement verification
• device-related identifiers required for purchase restoration or validation
These third-party services operate under their own privacy policies and terms.
7. No analytics and no advertising tracking
Based on the information provided for MTZCK Countdown, the app does not use analytics tools, behavioural profiling, or advertising tracking for its core operation.
The app is not designed to collect user behaviour data for targeted advertising.
8. Data security
MTZCK Countdown uses standard mobile platform security and local device storage protections.
The app is designed so that user input remains on the device rather than being stored in a central company database.
However, no method of electronic storage is completely secure. You are responsible for maintaining the security of your own device and controlling access to it.
9. Data retention
Because user input data is stored locally on the device and not on MTZCK servers, MTZCK does not retain that data centrally.
If you delete the app or clear the app’s local storage, your data may be removed from the device depending on your operating system and device settings.
If you contact us by email, we may retain your message and related correspondence for as long as reasonably necessary to respond, resolve issues, comply with legal obligations, and keep appropriate business records.
10. Children’s privacy
MTZCK Countdown is not intended for children under the age of 13.
We do not knowingly collect personal data from children through the app. If we become aware that a child under 13 has provided personal information to us through support communication, we will review and delete it where appropriate.
Because the app stores user-entered data locally on the device and not on MTZCK servers, MTZCK generally does not have direct access to that information.
11. International users
MTZCK LTD is based in the United Kingdom.
If you interact with third-party services used for purchases, such as Apple App Store, Google Play Store, or RevenueCat, your information may be processed in countries outside the United Kingdom or European Economic Area in accordance with those providers’ policies.
12. Your rights
If you are located in the United Kingdom, the European Union, or another jurisdiction with applicable privacy rights, you may have the right to:
• request information about personal data we hold about you
• request correction of inaccurate personal data
• request deletion of personal data we control
• object to certain processing
• request restriction of processing
• lodge a complaint with a supervisory authority
Please note that MTZCK cannot access, retrieve, correct, or delete app input data that is stored only on your device and not on MTZCK systems.
To exercise your rights in relation to personal data we do control, such as support communications, contact us at:
contact@mtzck.com
13. Legal basis for processing
Where UK GDPR or EU GDPR applies, we rely on the following legal bases for limited personal data that we may process outside the app’s local storage model:
• performance of a contract, where processing is necessary to respond to support requests or app-related issues
• compliance with legal obligations
• legitimate interests, including maintaining support records, preventing misuse, and handling legal enquiries
14. Third-party privacy policies
Apple App Store, Google Play Store, and RevenueCat may process data independently as part of payment processing, entitlement management, and transaction verification.
You should review their privacy policies separately if you want more information about how they process your data.
15. Changes to this Privacy Policy
We may update this Privacy Policy from time to time for legal, technical, or operational reasons.
Any updated version may be published on mtzck.com and linked in the app or app store listing where appropriate.
Your continued use of the app after an update takes effect means you acknowledge the revised Privacy Policy.
16. Contact
If you have any questions about this Privacy Policy or your privacy rights, contact:
contact@mtzck.com