Rewind looks great, but lacks the option to store the data on another drive or store "blocks" in the cloud. One needs a large drive for all that recording. Adding $20/month is on the edge here.

Napkin looks promising. I like the concept. They pulled everything on from Readwise, which is nice. However, it makes me wonder what is the difference to Readwise then? Writing a note and showing me relations? ls interesting indeed. However, for $40/month it better be the absolute killer app and worth every penny. As they call in "personal" I tend to think that $40 is too expensive.