Privacy Policy
1. Who we are
SWE Interactive Pocketbook ("Pocketbook") is an offline reference and learning app for software engineers on iOS, iPadOS and Android, published by Divided Bits ("we", "us"). This policy explains how the app handles information.
2. Data we collect
None. We do not collect your name, email, contacts, location, identifiers, advertising IDs, usage analytics or crash reports. The app has no user accounts and no server of ours. All book content is bundled in the app and works offline.
3. Information stored on your device
To remember where you are, the app stores the following locally on your device:
- Learning progress: chapters read, quiz scores, questions due for review, activity days and streak, the dates you committed chapters and finished quizzes (for your growth chart), today's daily question answer, and your reading position.
- Personal notes you create in the app: saved sections and your career self-assessment answers.
- Purchase state: whether the full book is unlocked. The app never syncs or exports it, and it confirms it with the App Store or Google Play on launch, so a restored copy can't unlock anything your account doesn't own.
4. Backup and syncing between your devices
iPhone and iPad: the app keeps your progress and notes in sync across devices signed in to the same Apple Account using Apple's iCloud key-value storage. This data is stored by Apple in your iCloud account under Apple's privacy policy; we cannot access it. You can turn this off in Settings → [your name] → iCloud.
Android: the information in section 3 is included in Android's standard app backup to your Google account, and in device-to-device transfer, so a new phone can pick up where you left off. Google stores it under its privacy policy; we cannot access it. You control this in your phone's backup settings.
Apple and Google backups don't talk to each other. To move between iOS and Android, use export and import (section 6).
5. Read aloud
"Listen" reads chapters with your device's built-in text-to-speech engine (Apple's speech synthesis on iOS and iPadOS, the text-to-speech engine chosen in your settings on Android). The app hands the chapter text to that engine on your device and sends it nowhere else.
6. Export and import
"Export progress" creates a backup of the information in section 3 (excluding purchase state), including your reading theme. You can save it as a readable JSON file through your device's share sheet, or copy it as a backup code. Where it goes next is up to you; the app sends it nowhere. "Import progress" reads a backup file you choose or a code you paste in.
7. Purchases
The optional one-time unlock is processed by Apple (App Store) or Google (Google Play) as the merchant of record, under their privacy policies. We do not receive or store your payment details, only the stores' standard aggregated sales reporting.
8. No third-party SDKs
The app contains no third-party analytics, advertising, attribution or crash-reporting SDKs, and makes no network requests of its own.
9. Children
The app is a professional reference not directed at children and collects no data from anyone.
10. Your rights
Because we hold no personal data about you, there is nothing for us to access, correct, export or delete on our side. You can remove all locally stored data by uninstalling the app, and iCloud data from your iCloud settings. This posture is consistent with GDPR, CCPA/CPRA, LGPD, APPI, PIPA and KVKK.
11. Changes
If this policy changes, we will update the effective date above and post the new version at this URL.