Really this is just an implementation of a basic oscillator, filter and envelope. No harm in that all and it's more than I could manage - it's fun and nice, but it's nothing like a 303. "Building an acid synth" would be fairer.
The accent and glide are core components of the sound, as is the really quite unique sequencer control - from the strange bendy growls to the classic acid bark the accent brings out. Would have been nice to see a deeper dive into why that is and why it's different from implementing a normal portamento-style glide as many other synths do, like the SH-101 - which cannot sound that close to a 303 due to that glide. Well it's also got a different oscillator and filter, with no accent either, but I don't want that to ruin the story ;-)
[0]: https://loopmaster.xyz/docs/generators/pwm