Privacy Policy

Overview

ConvertDocs ("we", "our", "the app") is a document format conversion app for Android, iOS, macOS, and Windows. This Privacy Policy explains what data the app processes, where it is stored, and your rights.

We are committed to minimising data collection. The core principle of this app is offline-first, device-local processing: your files are converted on your device and are never uploaded to any server operated by us.

Data We Do NOT Collect

ConvertDocs does not collect, transmit, or store any of the following:

  • The contents of your documents — files are read and written locally only.
  • Personally identifiable information (name, email, phone number).
  • Device identifiers (advertising ID, IMEI, Android ID).
  • Location data.
  • Usage analytics or telemetry.
  • Crash reports (no Crashlytics, Firebase, Sentry, or equivalent).
  • Contacts, calendar, or media library.

Data Stored Locally on Your Device

The following data is stored on your device only and never transmitted to us:

  • App settings — conversion defaults, UI preferences. Stored via MAUI Preferences API (Android SharedPreferences / iOS NSUserDefaults / Windows LocalSettings).
  • Conversion history — a list of past source/output filenames, formats, sizes and timestamps. Stored in the app's private data directory as a JSON file. Never shared.
  • Template definitions (user-created templates only) — stored in the app's private data directory.
  • Temporary upload files — when you pick a file, its bytes are streamed into a temp file in the device's system temp directory so our NPOI/OpenXML libraries can open it by path. These files are deleted immediately after conversion completes, or when the app clears them on next launch.

Internet Access

The app declares the INTERNET permission. This permission is used exclusively for:

  • In-app purchase flow — validating purchases with the platform store (Google Play Billing / Apple StoreKit / Microsoft Store). No financial data passes through our servers.
  • Downloading Bootstrap CSS at runtime when the "Responsive HTML" output option is enabled — this is a CDN request to jsdelivr.net for styling only, containing no user data.

In-App Purchases

ConvertDocs offers a one-time Pro upgrade ("pro_background_convert"). Purchases are processed entirely by your platform's store:

  • Android — Google Play Billing. Governed by Google's Privacy Policy.
  • iOS / macOS — Apple App Store / StoreKit. Governed by Apple's Privacy Policy.
  • Windows — Microsoft Store. Governed by Microsoft's Privacy Policy.
  • We receive a purchase token from the store to verify entitlement. We do not receive your name, payment method, or billing address.
  • Purchase tokens are stored locally via MAUI Preferences to restore your Pro status without contacting the store on every launch.

Android Foreground Service

On Android, the Pro edition uses a Foreground Service (type: dataSync) to continue conversions when the app is backgrounded. This service:

  • Displays a persistent notification showing conversion progress — required by Android OS.
  • Does not access the network, location, contacts, or any data beyond the files you explicitly selected for conversion.
  • Stops automatically when conversion completes.
  • Can be cancelled at any time via the notification's Cancel button.

Windows Background Task

On Windows, the Pro edition registers a MediaProcessingTrigger background task. This task:

  • Runs in backgroundtaskhost.exe when triggered by the app.
  • Has access only to the files passed to it by the foreground app.
  • Does not access the network or any other resources.
  • Displays a Windows toast notification on completion.

Children's Privacy

ConvertDocs is not directed at children under 13 (COPPA) or 16 (GDPR). We do not knowingly collect any personal data from children. If you believe a child has provided personal information, contact us and we will take steps to delete it.

GDPR / CCPA Rights

Because all data is stored locally on your device and we do not operate servers that process your personal data, most GDPR and CCPA rights (access, rectification, erasure, portability) can be exercised directly by you using the data controls in this app.

For any data held by platform stores (Google, Apple, Microsoft) in connection with your purchases, you must contact those companies directly.

For any other privacy requests, contact: privacy@docconvert.example.com . We will respond within 30 days.

Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be communicated via an in-app notice. The "Last updated" date at the top of this page reflects the most recent revision.

Continued use of the app after changes become effective constitutes acceptance of the revised policy.

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