In an era where AI-generated content is increasingly common, educators, content creators, and professionals needed a reliable tool to detect and transform AI-written text into more natural, human-like content. I developed Undetectable AI Text Humanizer as a comprehensive macOS application that addresses this challenge head-on.

Users required a seamless, native macOS experience that could:

Accurately detect AI-generated content in various document formats

Transform AI text into natural, human-written content

Maintain document formatting and export capabilities

Provide a history of processed documents for reference

Work entirely offline once content is processed

Built entirely from scratch using SwiftUI and the MVVM architecture, the application leverages modern iOS/macOS development practices to deliver a polished, performant experience.

SwiftUI: For building an intuitive, native macOS interface

CoreData: Persistent storage of processed documents and user history

API Integration: Dual-API system for AI detection and humanization

SwiftyStoreKit: Seamless in-app purchase implementation

Document Processing: Support for PDF, DOCX, and TXT file formats

1. Flexible Input Methods Users can paste text directly, type into the editor, or upload documents in multiple formats (PDF, DOCX, TXT). This flexibility ensures the app fits naturally into any workflow.

2. AI Detection Engine The app analyzes submitted content and provides a detailed percentage breakdown of AI-generated vs. human-written content, giving users clear insights into their text.

3. Intelligent Humanization With a single tap, users can transform flagged AI content into natural, human-like text that maintains the original meaning while eliminating AI detection markers.

4. Comprehensive History Management Every processed document is stored locally using CoreData, allowing users to revisit, compare, or export previous work at any time.

5. Multi-Format Export Results can be exported as PDF, DOCX, or TXT files, ensuring compatibility with any downstream workflow or requirement.

Full Localization: Built with internationalization in mind, making the app accessible to global users

Minimum OS Target: macOS 13.0+, balancing modern features with broad device compatibility

MVVM Architecture: Clean separation of concerns ensures maintainable, testable code

Native Performance: SwiftUI delivers smooth animations and responsive interactions

The app successfully bridges the gap between AI-generated content and human writing, providing users with a powerful tool for content refinement. By combining advanced AI detection with seamless humanization, it serves professionals, students, and content creators who need reliable content transformation.

Platform: macOS 13.0+

Framework: SwiftUI

Architecture: MVVM

Storage: CoreData

Languages: Fully localized

Monetization: In-app purchases via SwiftyStoreKit