| Recipient or Service | When Used and Information Involved |
|---|---|
| Apple CloudKit / iCloud | After you accept the Privacy Policy and iCloud is available, personal learning data, settings, and materials you choose sync to your private iCloud database. Apple manages the account and cloud storage. |
| Apple App Store / StoreKit | When you view products, buy membership, or restore purchases, Apple processes product, transaction, and payment information. The app reads verified transactions to calculate membership access. |
| Apple system features | When you authorize Screen Time or use the photo picker, Add Photos Only, notifications, widgets, audio, or Picture in Picture, iOS processes information within the scope of those features. System app selection tokens are not sent to business services. |
| Business APIs and content services used by the app | These services support app features provided by the operator; they are not sharing with an independent third party. Requests for the public study room directory, membership catalog, or online materials send the app version, platform, device and system versions, first launch time, launch count, and necessary API parameters. Network connections also generate IP addresses and access logs. Personal learning records primarily sync through private iCloud and are not uploaded to this API merely by browsing the public directory. |
| External services you choose | When you open QQ or WeCom communities, support links, or email, or use system sharing, the service receives content you choose to provide or share and handles it under its own privacy rules. |
The current version does not include WeChat or QQ login SDKs, provide app account login, or include an ad tracking SDK. Lottie and ZIPFoundation are used for on-device animation display and file processing; they do not themselves receive user data.
Privacy contact: chenai@skyingidea.com.