I need a diary that works as an Android app and a web app. Ideally when I type something it automatically gets a time stamp.

Asking here because I want something private.

Does such a thing exist?

edit - Thank you for all the responses!! I did not expect so many replies.

The reason I said web app is because I’m looking for something I can use on my desktop and my phone. I use my desktop much more than my phone. While I currently use Windowz, I’m slowly migrating to Linux.