True, although I feel like in the case of Skiff it was. The main attraction for me is that as a Google non-user, I don't really have a great Google Docs/Sheets

True, although I feel like in the case of Skiff it was. The main attraction for me is that as a Google non-user, I don't really have a great Google Docs/Sheets alternative. FastMail works great for mail, but doesn't have these other services. Skiff seemed to be the happy marriage of those two.