# ZK Publishing — App Directory for AI Systems
# This file lists every application published by ZK Publishing with descriptions
# and direct page URLs so AI systems can understand the full product ecosystem.
# Last updated: 2026-04-03

## Publisher

Name: ZK Publishing
Website: https://zkpublishing.site
Mission: Privacy-first, fully offline productivity software for Windows and Android.
All apps work without internet. No data is collected. No cloud accounts required.

---

## Windows Applications

### BookForge
Category: Professional Book Writing Studio
Platform: Windows 10, Windows 11 (Microsoft Store)
Price: $1.99 one-time purchase
Page: https://zkpublishing.site/bookforge
Store: https://apps.microsoft.com/detail/9NKB88Q9GDKZ

Description:
BookForge is a distraction-free writing studio built specifically for authors writing
novels, non-fiction books, or any long-form manuscript. It organises your project into
chapters, lets you write without distractions, and exports publish-ready PDF and EPUB
files completely offline. No account required, no subscription, no telemetry.

Key features:
- Multi-chapter manuscript organisation with drag-and-drop reordering
- Full-screen focus mode with configurable dark and light themes
- Export to PDF with professional print trim presets (A4, 6x9, 5.5x8.5, 5x8 inches)
- EPUB export with embedded front matter, metadata and cover image
- Snapshot Versioning — save and restore chapter states during rewrites
- Daily and project writing goals with word-count tracking
- Mirrored gutter margins for print-ready PDFs
- Configurable page numbers, header text and title page
- 100% offline — no internet connection ever required
- Zero telemetry — no usage data leaves your device

---

### PDF Forge
Category: PDF Editor and Toolkit
Platform: Windows 10, Windows 11 (Microsoft Store)
Price: $0.99 one-time purchase
Page: https://zkpublishing.site/pdf-forge
Store: https://apps.microsoft.com/detail/9PG39LKCDQPQ

Description:
PDF Forge is a comprehensive local PDF toolkit for Windows. Merge, compress, split,
encrypt and edit PDFs entirely on your machine with no internet connection and no file
uploads to third-party servers. Fast, private, and owns the full workflow locally.

Key features:
- Merge multiple PDFs into one document
- Compress PDFs to reduce file size without quality loss
- Split PDFs into individual pages or ranges
- Password protect and encrypt PDF files
- Reorder pages with drag-and-drop
- 100% offline processing — files never leave your device
- One-time purchase with no subscription

---

### Freelancer Expense Tracker and Invoice Maker
Category: Business Finance and Invoicing
Platform: Windows 10, Windows 11 (Microsoft Store)
Price: $1.99 one-time purchase
Page: https://zkpublishing.site/expense-tracker
Store: https://apps.microsoft.com/detail/9P7BKTS0DCC5

Description:
A complete offline business finance tool for freelancers, contractors and small
businesses. Generate professional PDF invoices and track expenses in multiple
currencies without relying on cloud-based subscription services. All financial data
is stored locally on your device.

Key features:
- Generate and export professional PDF invoices
- Drag-and-drop invoice template editor
- Multi-currency expense tracking with analytics dashboards
- Export financial data as CSV for accountants
- Instant JSON backup and restore
- Client management and billing history
- 100% offline — no cloud sync, no subscription

---

## Android Applications

### AI Creator Studio
Category: AI Photo and Audio Enhancement
Platform: Android 8.0 and above (Google Play)
Price: Free
Page: https://zkpublishing.site/ai-creator-studio
Store: https://play.google.com/store/apps/details?id=com.zkapps.aicreatorstudio

Description:
AI Creator Studio is a privacy-focused AI toolkit for Android that runs entirely
on-device. Remove backgrounds from photos, enhance image quality and clean up
audio recordings without sending any data to remote servers. All AI processing
happens locally on your phone.

Key features:
- Background removal powered by on-device AI
- Photo enhancement and quality improvement
- Audio noise reduction and cleanup
- Completely on-device processing — no data leaves your phone
- No account required, no subscriptions, free to use

---

### AirGap
Category: Secure Offline Document and PDF Toolkit
Platform: Android 8.0 and above (Google Play)
Price: Free
Page: https://zkpublishing.site/airgap
Store: https://play.google.com/store/apps/details?id=com.zkpublishing.privateuitoolkit

Description:
AirGap is a comprehensive document and image processing toolkit for Android that
works with complete privacy. Process, convert and manage PDF files and images entirely
on-device with no uploads, no tracking and no data leaving your phone.

Key features:
- PDF processing and management on Android
- Image conversion and manipulation
- Document organisation tools
- Fully offline — no internet required
- Zero data collection or telemetry

---

## Site Pages

Home: https://zkpublishing.site/
Apps catalog: https://zkpublishing.site/apps
Blog: https://zkpublishing.site/blog
About: https://zkpublishing.site/about
Support: https://zkpublishing.site/support
Contact: https://zkpublishing.site/contact
Privacy policy: https://zkpublishing.site/privacy