The developer of Zen Flow (the “Developer”) establishes this Privacy Policy (the “Policy”) regarding the handling of user information in the mobile application Zen Flow – Daily Timeline (the “App”).
1. Scope
This Policy applies to the handling of user information in connection with the App.
When a user accesses an external service, application store, website, or other third-party service through the App, the privacy policy and terms established by that third party will apply.
2. Data Stored on the User’s Device
The App may store the following information locally on the user’s device:
| Category | Examples |
|---|---|
| Timeline data | Titles, dates, times, colors, status information, and other content entered by the user |
| Notification settings | Notification status, scheduled notification times, and notification identifiers |
| App settings | Language, display preferences, and other settings |
| Purchase status | Information used to determine whether premium features are enabled |
| Backup data | Timeline data and other information exported by the user |
This information is generally stored only on the user’s device.
The Developer does not transmit, store, or access titles, schedules, dates, times, or other timeline content entered by the user on any server controlled by the Developer.
If the user has enabled iCloud, Google backup, device migration, or another backup service, locally stored data may be transferred to or stored by Apple, Google, or another service provider.
Such processing is governed by the user’s device settings and the policies of the relevant service provider.
3. User Accounts
The App does not provide a user account system managed by the Developer.
The Developer does not require users to register their name, postal address, telephone number, email address, password, or similar account information in order to use the App.
As no Developer-managed account is created, the App does not provide an account deletion function.
4. Information Processed by Third-Party Services
The App uses third-party services for in-app purchases and advertising.
These third-party services may process the following information:
| Service | Information That May Be Processed | Purpose |
|---|---|---|
| Apple App Store | Product identifiers, purchase history, transaction information, and receipt information | Processing purchases, refunds, and purchase history |
| Google Play | Product identifiers, purchase history, transaction information, and receipt information | Processing purchases, refunds, and purchase history |
| RevenueCat | Product identifiers, purchase status, transaction information, anonymous app user identifiers, and technical app or device information | Purchase validation, purchase status management, and restoration of purchases |
| Google AdMob | IP address, advertising identifiers, device information, ad impressions, ad interactions, approximate location information, diagnostics, and performance information | Advertising, measurement, fraud prevention, and service improvement |
| Operating system and device services | Operating system version, device type, language, notification permission status, app version, and other technical information | Providing app functions, notifications, diagnostics, and stability improvements |
The specific information processed may vary depending on the device, operating system, region, consent status, advertising settings, and the specifications of each third-party service.
The Developer does not directly collect or store credit card numbers, bank account information, app store passwords, or other payment credentials.
5. Purposes of Data Processing
The Developer and applicable third-party service providers may process information for the following purposes:
- To provide and maintain the functions of the App.
- To determine whether premium features have been purchased.
- To restore previously purchased products.
- To display advertisements to users of the free version.
- To measure advertising performance and prevent advertising fraud.
- To prevent fraudulent purchases and other unauthorized activity.
- To investigate errors and improve the stability of the App.
- To comply with applicable laws and lawful requests from public authorities.
The Developer does not use timeline content entered by users for advertising, marketing, profiling, or behavioral analysis.
6. Advertising
The App uses Google AdMob and the Google Mobile Ads SDK to display advertisements, primarily to users of the free version.
Google and other advertising service providers may process advertising identifiers, IP addresses, device information, ad impression data, ad interaction data, approximate location information, diagnostic information, and other technical information.
Depending on the user’s region, device settings, and consent status, the App may display personalized or non-personalized advertisements.
Users may be able to restrict the use of advertising identifiers through the privacy, tracking, or advertising settings of their device.
When premium features are enabled, advertisements are generally not displayed in the App. However, because the advertising SDK is included in the App, certain technical information may still be processed during SDK initialization or related operations.
7. In-App Purchases
In-app purchases are processed through the Apple App Store or Google Play.
The App uses RevenueCat to validate purchases, determine purchase status, and restore previously purchased products.
Purchases, billing, refunds, and purchase history are governed by the terms and procedures established by Apple or Google.
The Developer does not directly receive credit card numbers or other payment method information used for purchases.
8. Backup and Import Files
The App may allow users to export or import their data as a backup file.
Backup files may be stored on the user’s device, in a cloud storage service, in a file management application, or in another location selected by the user.
The Developer does not receive, store, or access backup files created by users.
Backup files may contain titles, dates, times, and other information entered by the user.
The storage, deletion, transfer, and sharing of backup files are controlled by the user and the service providers selected by the user.
9. Disclosure and Sale of Information
The Developer does not sell timeline data entered by users.
The Developer will not disclose information directly collected by the Developer to a third party except in the following circumstances:
- When the user has given consent.
- When disclosure is required by applicable law.
- When disclosure is necessary to protect the life, health, safety, property, or rights of a person.
- When the Developer receives a lawful request from a court, government authority, or other public institution.
- When processing is entrusted to a third-party service provider to the extent necessary to operate the App.
- When the App or a related business is transferred, assigned, merged, or otherwise succeeded by another party.
- When disclosure is otherwise permitted under applicable law.
Information processed by Apple, Google, RevenueCat, Google AdMob, or another third-party service provider is handled in accordance with that provider’s privacy policy.
10. Data Retention and Deletion
| Data | Retention and Deletion |
|---|---|
| Timeline data stored on the device | Retained until deleted by the user, the App is uninstalled, or the device is reset |
| Notification data | Deleted when the relevant timeline item is deleted, notifications are disabled, or the App is uninstalled |
| Backup files | Retained in the location selected by the user until deleted by the user |
| Purchase information | Retained by Apple, Google, and RevenueCat in accordance with their respective policies |
| Advertising information | Retained by Google and other advertising service providers in accordance with their respective policies |
The Developer cannot remotely access, modify, recover, or delete information stored only on the user’s device.
11. Withdrawal of Consent and Device Settings
Users may be able to change or withdraw permissions relating to notifications, tracking, advertising identifiers, and other device functions through the settings of their device or operating system.
Locally stored data may be deleted within the App or by uninstalling the App.
Backup files must be deleted by the user from the file management application, cloud storage service, or other location in which they were stored.
Information held by Apple, Google, RevenueCat, Google AdMob, or another third-party service provider is subject to the procedures and privacy policy of that provider.
12. Data Security
The Developer implements reasonable safeguards appropriate to the nature of the information directly handled by the Developer.
Information processed by Apple, Google, RevenueCat, Google AdMob, an operating system, a device provider, a cloud storage provider, or another third-party service is managed by the applicable service provider.
No method of electronic storage, device storage, or internet transmission can be guaranteed to be completely secure.
13. International Data Processing
Apple, Google, RevenueCat, and other third-party service providers may process information using servers, offices, contractors, or service providers located outside the user’s country or region.
Such processing is governed by the privacy policies of the relevant service providers and applicable laws.
14. Changes to This Policy
The Developer may revise this Policy in response to changes in the App, third-party services, applicable laws, or other circumstances.
The revised Policy will become effective when it is published on the applicable website or made available through the App.
When user consent is legally required for a change, the Developer will obtain such consent through an appropriate method.
