There are some, I've seen Periodical on F-Droid before, but I saw now there's another one called drip. Probably more out there, but both of those are also available on Google Play for people who aren't FOSS nerds like me. Source: about 2 years ago

Do you really need it hosted? Is a private app enough? For example, on Android, there's Periodical and I think it doesn't even have the internet access permission. Source: about 2 years ago

If you have an Android device, Periodical is a simple tracking app that does not have Internet permission so it literally cannot share your data. You can back up its data to a text file to restore if need be, and keep that backup off your device. However, if your phone backs itself up to "the cloud" you could still incriminate yourself. Source: about 2 years ago

Can anyone give me their opinion on https://www.ka-writing.com/ and https://scribemedia.com/? Source: over 2 years ago

Https://scribemedia.com/ <--- this place used to be called Book in a Box and at least back then was charging $10k to basically take all of your ideas and organize them for you in a publishable format. I'm sure there are other outfits that also provide that same service. Source: about 3 years ago