I just found out about the Aotearoa Species Classifier via this post.
It's made by members of the TAIAO project at Waikato and Canterbury universities using AI trained on photos from iNaturalist.
Then someone told me in that thread that the iNaturalist app already had its own auto ID feature.
The Aotearoa Species Classifier works offline, and seems to be better at IDing than iNaturalist, but they're both good. The Aotearoa Species Classifier also has an online web classifier that has more powerful models and tools than the app.
Aotearoa Species Classifier
iNaturalist