The Readme isn't explicit about this, but given how little functionality there is (notes only have a message and Boolean for "done"), and given that the Readme

The Readme isn't explicit about this, but given how little functionality there is (notes only have a message and Boolean for "done"), and given that the Readme briefly explains the architecture, it does indeed look like it's meant for learning about these technologies. I get the impression it's meant to be readable by beginners, so it's perhaps intended as a demonstration for others' benefit rather than just for the author's own benefit.