Privacy Policy

Effective Date: March 30, 2026
Last Updated: March 30, 2026

This Privacy Policy describes how Mortgage Calculator ("we", "us", or "our") collects, uses, and protects your personal information. We process personal data in compliance with the General Data Protection Regulation (EU) 2016/679 (GDPR), the California Consumer Privacy Act (CCPA/CPRA), and other applicable privacy laws.

1. Data Controller

The data controller responsible for your personal data under Article 4(7) of the GDPR is:

Mortgage Calculator
Developer: Ing. Ondrej Novotny, Ph.D.
Business ID: 19525567
Address: Nove sady 988/2, 602 00 Brno, Czech Republic
Application ID: com.ondran.mortgagecalculator.us
Email: 0ndr4N@proton.me

2. Data We Collect

The application does not require registration or any personal data input. All mortgage calculations are performed locally on your device and are never sent to any server. Through third-party services, the following data may be automatically collected:

2.1 Automatically Collected Data

Category Types of Data Purpose
Device Information Device type and model, OS version, unique device identifiers (Advertising ID, App Instance ID), language, time zone App functionality, analytics, advertising
Usage Data App interactions, screens viewed, session duration, features used, in-app events Analytics, app improvement
Network Information IP address (for approximate geolocation), network type, carrier Geolocation for ads, analytics
Crash Data Crash reports, stack traces, device state at time of crash Bug fixes, app stability
Advertising Data Ad interactions, impressions, clicks, advertising identifiers Personalized/non-personalized ads

2.2 Data We Do NOT Collect

3. Purposes of Processing

We process your personal data for the following purposes:

Processing of your personal data is based on the following legal grounds under Article 6(1) of the GDPR:

Processing Activity Legal Basis Reference
Personalized advertising Consent Art. 6(1)(a) GDPR
Non-personalized advertising Legitimate interest Art. 6(1)(f) GDPR
Analytics (Firebase Analytics) Consent Art. 6(1)(a) GDPR
Crash reporting (Crashlytics) Consent Art. 6(1)(a) GDPR
Basic app functionality Legitimate interest Art. 6(1)(f) GDPR
Right to withdraw consent: You may withdraw your consent at any time without affecting the lawfulness of processing based on consent before its withdrawal. Withdrawing consent will disable analytics and switch ads to non-personalized mode. You can manage your consent in the app's Settings under "Manage Ad Consent".

5. Third-Party Services

The application uses the following third-party services that may collect and process your data:

5.1 Google AdMob

Advertising service for displaying ads within the application.

5.2 Firebase Analytics (Google Analytics for Firebase)

Analytics service for understanding app usage.

5.3 Firebase Crashlytics

Crash reporting service for collecting app crash reports.

5.4 Google Play Billing

Payment service for in-app purchases (ad removal).

6. Advertising

6.1 Types of Ads

The application is ad-supported and displays advertisements to all users. The type of ads you see depends on your consent:

6.2 Managing Ad Preferences

You can manage your advertising preferences through:

Note: Declining consent does not remove ads — it switches them to non-personalized mode. To remove all ads entirely, you can purchase the "Remove Ads" option in the app's Settings menu.

6.3 Ad-Free Option

You can permanently remove all ads from the application through a one-time in-app purchase ("Remove Ads") available in the app's Settings menu. After purchasing, no advertising data will be collected or processed.

7. In-App Purchases

The application offers a one-time in-app purchase to remove all advertisements. This purchase is processed entirely through Google Play. We do not collect, store, or have access to any payment information. Your purchase status is verified through Google Play Billing to determine whether to show ads.

8. Cookies and Similar Technologies

The application and its third-party services use cookies, SDKs, and similar technologies to:

In compliance with the ePrivacy Directive (2002/58/EC), we obtain your consent before using cookies and similar technologies that are not strictly necessary for the application to function.

Consent dialog: On first launch, the app displays a consent dialog in accordance with the IAB TCF v2.3 standard. Your consent or refusal is stored and respected throughout subsequent use of the application.

9. Data Transfers

9.1 Sharing with Third Parties

We share your data with Google (as described in Section 5) for the purposes of advertising, analytics, and crash reporting.

9.2 International Data Transfers

Your data may be transferred to and processed in countries outside the European Economic Area (EEA), including the United States, where Google's servers are located.

When transferring data outside the EEA, we ensure appropriate safeguards:

9.3 What We Do NOT Do

10. Data Retention

We retain your data for the period necessary to fulfill the purposes described in this policy:

Data Type Retention Period
Analytics data 26 months (Google Analytics default)
Crash reports 90 days
Advertising data Per Google's policies
Consent choices Until consent is withdrawn or the app is uninstalled

You may request deletion of your data at any time (see Section 11).

11. Your Rights

As a data subject, you have the following rights under the GDPR:

Right Description Reference
Right of Access Obtain confirmation of processing and a copy of your personal data Art. 15 GDPR
Right to Rectification Request correction of inaccurate personal data Art. 16 GDPR
Right to Erasure Request deletion of your personal data ("right to be forgotten") Art. 17 GDPR
Right to Restriction Request restriction of how we use your data Art. 18 GDPR
Right to Data Portability Receive your data in a structured, machine-readable format Art. 20 GDPR
Right to Object Object to processing based on legitimate interest. For direct marketing (advertising), you have an absolute right to object at any time. Art. 21 GDPR
Right to Withdraw Consent Withdraw consent at any time without affecting the lawfulness of prior processing Art. 7(3) GDPR
Right to Lodge a Complaint Lodge a complaint with a supervisory authority Art. 77 GDPR

11.1 How to Exercise Your Rights

You can exercise your rights:

  1. In the app: Settings → Manage Ad Consent
  2. By email: Send a request to 0ndr4N@proton.me

We will respond to your request without undue delay, and no later than one month from receipt.

12. California Privacy Rights (CCPA/CPRA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA) as amended by the California Privacy Rights Act (CPRA):

To exercise your California privacy rights, contact us at 0ndr4N@proton.me. We will verify your identity before processing your request.

13. Children's Privacy

The application is not directed at children under 13 years of age. We do not knowingly collect personal data from children under 13 (or 16 in certain jurisdictions).

If you believe that we have collected data from a child below the applicable age threshold, please contact us at 0ndr4N@proton.me and we will promptly delete such data.

14. Data Security

We implement appropriate technical and organizational measures to protect your personal data against unauthorized access, alteration, disclosure, or destruction. These measures include:

However, no method of transmission over the internet or electronic storage is 100% secure. While we strive to protect your personal data, we cannot guarantee absolute security.

15. Changes to This Policy

We may update this Privacy Policy from time to time. When making changes:

We recommend reviewing this policy periodically for any changes.

16. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data processing practices, please contact us:

Email: 0ndr4N@proton.me

Suggested email subjects:

We will respond to all legitimate requests within the statutory period (one month under GDPR; 45 days under CCPA).


Mortgage Calculator | Application ID: com.ondran.mortgagecalculator.us
This Privacy Policy is effective as of March 30, 2026

Processing in compliance with:
Regulation (EU) 2016/679 (GDPR) | California Consumer Privacy Act (CCPA/CPRA)

© 2026 Mortgage Calculator. All rights reserved.