app-legal-docs

Privacy Policy — GrepTag

Effective Date: 2026-09-18 Developer: MLOGICTECH Contact: support@mlogictech.com App Website: https://mlt-solutions.github.io/app-legal-docs/greptag

Summary

GrepTag is a privacy-first app for keyword-scanning and tagging your local TXT and EPUB book files. All scanning, tagging, and file management happens entirely on your device. No files, tags, or personal data are ever transmitted to our servers.

1. Data We Do NOT Collect

We do not collect, store, or transmit:

Personal information of any kind (name, email, location, etc.)
The contents of any book or document files you scan
Your tags, ratings, keyword profiles, or search terms
Usage analytics, crash reports, or telemetry
Device identifiers, IP addresses, or network information

2. Data Stored on Your Device

The app stores the following data for its own operation.

Data	Storage Location	Purpose
Book records (filename, file size, folder path, tags, rating)	SwiftData database in app container	Library management
Keyword profiles and keywords	SwiftData database	Grep scan configuration
Scan results	SwiftData database (cleared each session)	Display matched books
Lifetime scan count	UserDefaults (`NSUserDefaults`)	Free-tier usage tracking
Purchase entitlement	Apple StoreKit	Pro access status

iCloud Sync (Mac ↔ iOS)

If you use the Sync or Backup features, the app writes library snapshots, library backups, and copies of book files to your personal iCloud container (iCloud.com.mlogictech.bibliofusegreptagreader). This data is:

Stored in your own iCloud account — we have no access to it
Governed by Apple’s iCloud Terms of Service
Encrypted by Apple both in transit and at rest
Used only to transfer your files and metadata between your own devices

The SwiftData library database remains local to each device. Only sync snapshots (JSON), backup files, and book files are written to iCloud.

iCloud Backup (optional, Pro)

If you turn on Automatic iCloud Backup, the app writes a daily copy of your library’s metadata — file names, folder locations, tags, ratings, reading positions and bookmarks, and your grep profiles — to the same personal iCloud container. Cover images are included only if you switch that option on separately. Backups are stored per device and never leave your iCloud account. You can turn the feature off at any time in Settings, and delete existing backups from iCloud Drive yourself.

Apple StoreKit

The app uses Apple StoreKit 2 to validate Pro purchases and restore entitlements.

We do not receive your payment details
Purchase entitlement is managed by Apple and subject to Apple’s Privacy Policy
Restoration is handled through your Apple ID

3. File Access

GrepTag reads TXT and EPUB files you explicitly add to the library.

macOS: Files are accessed at the paths you select. The app stores absolute file paths locally and does not copy files unless you use the “Send to iCloud Sync” or “Move to Folder” feature.
iOS: Files are imported into the app’s local Documents folder. You retain full control; the app does not upload them to any server.
File content is read on-device solely to perform keyword scanning. Content is never cached beyond the scan session.

4. Third-Party Libraries

The app uses the following open-source libraries. Neither makes any network connections or collects any data.

Library	Purpose
ZIPFoundation	Unpacking EPUB files (ZIP-based) for text extraction
SDWebImageWebPCoder	Decoding WebP cover images

5. Network Access

GrepTag makes no automatic network connections to our servers. The only network activity is:

Apple StoreKit: Purchase validation and entitlement restoration. Handled entirely by Apple.
iCloud (if Sync is used): File transfers and snapshot sync via your personal iCloud account. We have no access to this data.
Help links: Tapping “Privacy Policy” or “Terms” opens your browser to this page.

6. Data Deletion

All data is stored locally or in your own iCloud account. You can remove it by deleting the app.

iOS: Settings → General → iPhone Storage → GrepTag → Delete App

macOS: Delete the app from Applications. SwiftData is stored in ~/Library/Containers/com.mlogictech.bibliofusegreptagreader/.

iCloud data (if Sync or Backup was used): Delete the GrepTag folder from iCloud Drive in the Files app, or at iCloud.com.

7. Children’s Privacy

This app does not collect any information from any users, including children. It is not directed at children under 13.

8. Changes to This Policy

We may update this Privacy Policy to reflect changes in the app. The effective date at the top of this document will be updated accordingly. Continued use of the app after changes constitutes acceptance of the updated policy.

9. Contact

If you have any questions about this Privacy Policy, please contact us:

Email: support@mlogictech.com Developer: MLOGICTECH

Privacy Policy URL: https://mlt-solutions.github.io/app-legal-docs/greptag/PRIVACY