Windows users can download Note Splitter by clicking Note.Splitter-1.0.0.msi below and running the installer. When running the installer, you may see a blue window warning about the app being unrecognized; that's normal for new apps. If you trust me, you can click "more info" and then "run anyways".
The source code runs on Mac, Linux, and Windows.
Note.Splitter-1.0.0.msi SHA256: 6d9c81473b208a0408716634adcf6275bfc53e5a0b87b788583d2962f710e655