I actually had the same thought after I had installed it and noticed that the binary was over 600MB. Sure, it's probably just Electron, but still, it was just enough to get me to hold off on actually trying it for now.
It's actually not Electron, it appears to be Chromium Embedded Framework (CEF), which is what Spotify desktop app uses. I'm speaking completely separately from OP's product:
CEF was supposed to be more efficient than Electron, but I think that framework heavily missed the mark. I'd be interested to know why the dev chose CEF instead.
I actually use an Electron-like framework to make ClipBook, but it's not Electron and not CEF. It's Electron for C++ developers. It's called Molybden SDK. I'm one of the creators of this SDK. I decided to use it, because I know it really well and it allows me to write using C++ and closely work with the operating system. It's very important when you build a software like ClipBook.
There are three downloads: for Mac Apple Silicon, Intel, and Universal.
You see the 600MB binary, because it's probably Universal (Apple Silicon + Intel) DMG. To have a smaller size it's better to download DMG for your Mac CPU architecture. You can find all three versions at https://clipbook.app/download/
I should say that even Apple Silicon or Intel app will still be ~330MB. It's because of the SDK I use to build this app.
