Last updated: April 2026
1. Controller
The controller responsible for data processing is:
Frank Egger Software Entwicklung
Auf der Pief 5
52134 Herzogenrath
Germany
Email: frank.egger@gmail.com
2. Overview of Data Processing
We take the protection of your personal data seriously. The app Calendar Event Reminder (CER) is designed to operate primarily locally on your device. We do not collect or store personal data on our servers in connection with your use of the app, except where explicitly stated below.
3. Data Processed by the App
3.1 Calendar Data (Local Processing Only)
The app accesses calendar data (e.g., event titles, descriptions, times) exclusively to provide reminder functionality.
- Processing takes place only on your device
- No transmission to the provider
Legal basis: Art. 6(1)(b) GDPR
3.2 Google Tasks Data (Local Processing Only)
If the user enables Google Tasks integration and grants the required permissions through Google OAuth, the app may access task information stored in the user’s Google account.
This information may include:
- Task titles
- Task descriptions or notes
- Due dates and times
- Completion status
- Reminder information
- Task list names
The purpose of this processing is to synchronize tasks to the device and provide reminder and notification functionality. Task data is processed locally on the user’s device and is not transmitted to the provider’s servers. The provider does not use task data for profiling, advertising, analytics, or any other purpose unrelated to the functionality of the app.
Legal basis: Art. 6(1)(a) GDPR (consent) and Art. 6(1)(b) GDPR (performance of a contract).
3.3 Google Account Authorization
To access Google Tasks, users authenticate through Google’s OAuth authorization process. The app receives authorization tokens from Google that permit access to the user’s selected Google account and authorized Google Tasks data. The provider does not receive the user’s Google password. Authorization tokens are stored only on the user’s device and are used solely to access the user’s Google Tasks data.
Legal basis: Art. 6(1)(a) GDPR (consent).
3.4 Usage Access (Foreground Apps)
If you grant permission, the app may access information about which apps are currently in use to enable features such as suppressing notifications.
- Processed only locally
- Not transmitted to us
Legal basis: Art. 6(1)(a) – consent
3.5 Crash Reports (Firebase Crashlytics)
We use Firebase Crashlytics to analyze app crashes.
Data processed may include:
- Device type
- Operating system
- App version
- Crash logs
This data is:
- Pseudonymized (not directly identifying individuals)
- Used solely to improve stability
Legal basis: Art. 6(1)(f) GDPR (legitimate interest)
3.6 Google Play Services
Integration of Google Play Services may result in independent data processing by Google. Please refer to Google’s privacy policy.
4. Website & Account System
If you create an account (e.g., for feature requests), the following data is processed:
- Email address
- First name
- Last name
- Username
- Password (securely hashed)
Purpose:
- Account management
- Communication
- Feature request handling
Legal basis: Art. 6(1)(b) GDPR
5. Data Sharing
We do not sell personal data.
Data may be shared with:
- Service providers (e.g., Firebase)
- Authorities if legally required
6. Google Services
The app may integrate with Google services, including Google Tasks APIs and Google OAuth authentication. When users choose to connect a Google account, Google may independently process personal data in accordance with Google’s Privacy Policy and Terms of Service. The provider has no control over Google’s data processing activities.
For information regarding Google’s processing of personal data, please refer to:
7. International Data Transfers
Processing by Google/Firebase may occur outside the EU.
Transfers are based on:
- EU Standard Contractual Clauses (Art. 46 GDPR)
8. Data Retention
- Account data: until deletion request
- Crash data: according to Firebase retention policies
- App data: stored locally on device
9. Your Rights (GDPR)
You have the right to:
- Access your data (Art. 15 GDPR)
- Rectification (Art. 16)
- Deletion (Art. 17)
- Restriction (Art. 18)
- Data portability (Art. 20)
- Object (Art. 21)
To exercise your rights: frank.egger@gmail.com
10. Security
We implement appropriate technical and organizational measures, including:
- Secure password storage (hashing)
- Access restrictions
11. Children
Users under the age of 16 should only use the app with parental consent (Art. 8 GDPR).
We do not knowingly collect sensitive personal data from children.
12. Changes to this Policy
We may update this Privacy Policy. Changes will be published on this page.