Last updated: August 8, 2026
This Privacy Policy explains how Postpact (“we,” “us,” “our”) handles information across the mobile apps we publish. It applies to all current and future Postpact apps. Each app has its own section below describing exactly what that app does, since apps may differ in what they collect.
If you have questions about this policy, contact us at info@postpact.com.
Our general principles
- We collect the minimum data necessary for an app to function.
- We do not sell your personal data to anyone, ever.
- We do not show third-party ads unless an app’s section below says otherwise.
- Where an app can work entirely on your device without sending data anywhere, we build it that way.
- We’ll update this policy whenever we publish a new app or change how an existing app handles data, and update the “Last updated” date above when we do.
Kalender Jawa
What the app does: Kalender Jawa is a Javanese calendar reference app — weton lookup, jodoh (compatibility) checker, “hari baik” (auspicious day) finder, and primbon articles. All calendar calculations happen directly on your device.
Data stored on your device only:
- Your birth date, if you choose to enter one (used only to calculate your personal weton and, if you enable it, schedule your local weton reminder).
- Your notification preferences (on/off for the two reminder types).
This information stays on your device — it isn’t transmitted to us. Uninstalling the app deletes it.
Notifications: If you enable reminders, Kalender Jawa schedules local notifications directly on your phone using your device’s own notification system. This doesn’t involve any server on our end.
Analytics: Kalender Jawa uses Google Firebase Analytics to understand how the app is used (for example, which screens and tools are opened, and how often) so we can improve it. Firebase Analytics may collect device identifiers, general usage data, approximate location (derived from IP address), and app interaction events. This data is processed by Google on our behalf. It is not linked to your name, birth date, or any other information you enter in the app. See Google’s Privacy Policy at https://policies.google.com/privacy for how Google handles this data.
Advertising: Kalender Jawa shows ads served through Google AdMob to support free access to the app. AdMob may collect device and advertising identifiers, approximate location, and ad interaction data to select and measure ads, and (unless you opt out, see below) to personalize the ads you see. AdMob may use this data in line with Google’s advertising policies. See Google’s Privacy Policy at https://policies.google.com/privacy and Google’s ad-related data use terms at https://policies.google.com/technologies/partner-sites for details.
- On iOS, we ask for your permission (via Apple’s App Tracking Transparency prompt) before using your device’s advertising identifier for tracking. You can change your answer any time in iOS Settings → Privacy & Security → Tracking.
- On Android, you can limit ad personalization or reset your advertising ID in Settings → Google → Ads.
- You can also opt out of personalized advertising generally at https://adssettings.google.com.
Third parties this app shares data with: Google (via Firebase Analytics and AdMob), as described above. We don’t share data with any other third party, and we don’t sell your data.
Children: Kalender Jawa is not directed at children, and we do not knowingly collect personal information from children. If you believe a child has provided us with personal information, contact us at info@postpact.com and we’ll remove it.
Your choices: You can clear your birth date and reminder settings at any time from within the app’s Settings screen, or by uninstalling the app. See the opt-out links above for advertising and personalization choices.
Changes to this policy
We may update this policy as we publish new apps or change existing ones. Continued use of an app after an update means you accept the revised policy for that app.
Contact
Postpact info@postpact.com