Privacy Policy

1. Scope

This Privacy Policy applies to the iOS and Android applications published under the Zhenxu Dev brand by Hangzhou Zhenxu Technology Co., Ltd. ("we", "us"), and to the support correspondence connected to them.

It describes how the current released versions handle information, and how this policy will be updated before features that change information handling are introduced. Where an individual app needs additional disclosures, those are provided in the app itself or in its app store listing.

2. Information stored on your device

The content you create in our apps is stored locally on your own device. This includes records, entries, notes, labels, game progress, achievements, preferences and other in-app content.

We do not upload this content to servers we operate, and we cannot read it. No registration with us is required to use the core features. The one exception is when you use the platform game account and cloud save features described in section 4: a copy of some game progress is then kept in cloud storage that belongs to your own Google or Apple account. Servers we operate still do not receive it.

Some apps let you pick photos from your photo library to use inside the app. Only the photos you choose are accessed; they are processed and stored on your device and are never uploaded to us or to a cloud save.

Some apps download content, such as images and content catalogs, from servers we operate. As with any internet request, this reveals your device's IP address and basic request details (for example the app version) to those servers and to our hosting and delivery provider, Cloudflare, Inc. We use this only to deliver and protect the service, and we do not use it to identify you.

Because this content is held on your device, deleting the app, clearing its storage or resetting the device may permanently remove it. Unless it has been saved to a platform cloud save as described in section 4, we cannot restore it — we never received it. Content outside the scope of cloud saves, and anything not yet saved, cannot be recovered, so please keep your own backups of anything important.

3. Diagnostics and usage statistics

To find crashes and fix defects, our apps may use third-party diagnostic and basic usage-analytics services. Where such a service is active in an app, it may process:

• Crash and error reports, including the state of the app at the time of the failure.
• Device and environment information such as device model, operating system version and app version.
• Aggregated, non-identifying interaction counts used to understand which features are used.
• A resettable device or installation identifier generated by the service.

Where an app uses them, these services are Google Firebase Analytics and Firebase Crashlytics, provided by Google LLC. Google processes the data on our behalf, on servers that may be located outside your country. How Google handles it is described at https://firebase.google.com/support/privacy.

This information is used for stability and product quality only. We do not use it to build advertising profiles, and we do not sell it. Apps that use these services provide a switch in their settings to turn usage analytics and crash reporting off at any time. The specific services in use in each app, and the data they collect, are also disclosed in that app's store privacy disclosure.

4. Platform game accounts and cloud saves

Some of our games support Google Play Games Services on Android and Apple Game Center on iOS. Signing in is optional, and all core gameplay works without it. On Android, Play Games Services may sign you in automatically when the game starts if you already use Play Games on the device; on iOS, Game Center uses the account signed in on the device.

When you are signed in, the game receives from the platform:

• Your player display name and profile picture.
• A player identifier assigned by the platform (the Play Games Player ID, or the Game Center Team Player ID and Game Player ID).

We use these only to show your player identity inside the game and to link your cloud save to your account. They are kept on your device; they are not sent to servers we operate and are not included in the usage statistics described in section 3, which record only whether a sign-in succeeded.

Where a game offers cloud saves, it stores a copy of your long-term progress through Play Games Services saved games (kept with your Google account) or Game Center saved games (kept in your iCloud), so that it can be restored on a new device or after reinstalling. A cloud save may contain:

• Your balance of in-game virtual items, and the content you have unlocked with them.
• Achievement progress, unlocked achievements and claimed rewards.
• Your favourites, and summaries of finished games (for example size, time and rating).
• Daily task progress for the current day.
• A randomly generated device identifier, used only to merge progress from several devices correctly.

Games in progress are not included, and neither are photos you imported or anything derived from them. Cloud saves are not shared between Android and iOS, or between different platform accounts.

These services are provided by Google LLC and Apple Inc. under their own terms and privacy policies (https://policies.google.com/privacy and https://www.apple.com/legal/privacy/). We do not operate this storage and cannot read your cloud save from our side.

You can switch or sign out of your account in the Google Play Games app or in the Game Center section of your device settings, and delete the saved data through your Google account's Play Games or Drive settings, or your iCloud storage settings. Deleting a cloud save does not remove the data on your device, and deleting the app does not remove the cloud save.

5. Information you send us directly

When you contact us for support, feedback or a bug report — for example by writing to support@zhenxudev.com — we receive your email address, your message and anything you choose to attach, such as screenshots or logs.

We use this only to answer you and to investigate the issue you reported, and we keep it no longer than needed for that purpose and for our own records of the exchange.

6. Device permissions

Our apps request a system permission only when a feature you are using needs it, and the reason is explained at the point of the request or in the app's store listing. You can decline or later revoke any permission in your device settings; only the feature that depends on it stops working. For example, an app that lets you import your own pictures asks for access to your photo library only when you choose to import one, and reads only the photos you select.

7. Planned features that are not active yet

We intend to add optional accounts operated by us, synchronisation across platforms, and paid features such as subscriptions. None of this is active in the current released versions.

We will publish an updated version of this policy, with a new version number and date, describing what is collected, where it is stored and how to delete it, before any such feature becomes available to you.

If and when paid features launch, purchases will be processed by Apple's App Store or Google Play. Those stores handle payment; we do not receive or store your card or bank details.

8. Sharing

We do not sell personal information and we do not share it for advertising. We share information only with the service providers described in sections 2 and 3, acting on our instructions, and where we are legally required to do so or must act to protect our rights, users or the security of our services.

When you use a platform game account (section 4), Google or Apple provides that service to you directly, as an independent provider under its own privacy policy, rather than as a processor acting for us.

9. Children

Our apps are not directed at children under the age of 14. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will delete it.

10. Security

We apply reasonable technical and organisational measures to protect the limited information we do receive. No method of transmission or storage is completely secure, so we cannot guarantee absolute security. Content held only on your device is protected primarily by your device's own security, such as your passcode and system encryption; cloud saves are protected by the security of your Google or Apple account.

11. Your choices

You can delete the content held in an app by deleting it in the app or by uninstalling the app. You can sign out of a platform game account and delete its cloud save as described in section 4. You can turn permissions off in your device settings. You can ask us what correspondence we hold about you, and ask us to correct or delete it, by writing to the address in section 13.

12. Changes to this policy

When this policy changes we update the version number and the date shown at the top of this page. For changes that materially affect how information is handled, we will also give notice in the affected app or its store listing.

13. Contact us

For privacy questions, data requests or deletion requests, contact support@zhenxudev.com. The data controller is Hangzhou Zhenxu Technology Co., Ltd..