I like the app website. It is simple and easy to read and a bonus point for dark mode support. Is ClipBook a native macOS app? What technologies did you use to make it?
ClipBook is written using Molybden SDK. It allows building UI using modern web frontend frameworks like React, Vue, Angular and write business logic using C++. In case of ClipBook: UI — React + shadcn/ui, business logic — C++ + Cocoa. I wouldn't say it's a native macOS app. I would call it a hybrid app that combines web and desktop technologies to build cross-platform desktop apps quickly.