This app was mentioned in 2 comments, with an average of 1.50 upvotes
7Days is a better option in my opinion, since it allows to:
A) Print your diary/journal entries if you want to.
B) Sync with Dropbox
Without having to pay for them as in-app purchases, and it's as stylish as the other ones are.
Flava is a bit more sophisticated and lets you add voice recordings to your journals, songs as well, and has a neat lockscreen feature (as a separated app) that gives you quick access to the various methods it has to input data in the app.
Edit: formatting/spelling.
i could be wrong but 7 Days looks like it fits that description :)
https://play.google.com/store/apps/details?id=kr.co.mz.sevendays