I've been using Rewind for a while and find quite a bit of value for it. Because it uses GPT-4 for Ask Rewind it's not local-only for that feature, but I find myself just using the local search most of the time and it works fairly well (and have it firewalled off, so I know they're at least not lying about the data staying local except for updates, analytics [if you opt in], and Ask Rewind usage).