Software recommendations

Can anyone suggest to me:

A text editor / word processor that runs under Linux and handles Hebrew and bidirectional text?

A period and menstrual cycle tracking app where all the data is local only and never transmitted to the cloud?

( more detailed spec )

I don't mind social bonding by chatting generally about related software, but I am mainly looking for actual suggestions that meet my requirements. Please don't bother telling me I should use a different operating system though. I'm not really interested in opinions about Ubuntu, Linux or Android.