I guess it's technically not "public" but then again it's shipping your most private thoughts to WhatsApp and an unknown person and "privacy" isn't mentioned on the landing page once.
Personally I can recommend DayOne which is built by a trusted entity Automattic (Wordpress etc.) and they do have a big focus on privacy: https://dayoneapp.com/privacy-pledge/
I guess it's technically not "public" but then again it's shipping your most private thoughts to WhatsApp and an unknown person and "privacy" isn't mentioned on the landing page once.
Personally I can recommend DayOne which is built by a trusted entity Automattic (Wordpress etc.) and they do have a big focus on privacy: https://dayoneapp.com/privacy-pledge/