What pregnancy app do you suggest?

Hello everyone
My friend is looking for a good app to track her pregnancy.
There are tons of apps. Which one do you prefer?
TIA

I have 4 apps, but no specific preference. Sprout Pregnancy+ has good images of development. The other ones I have are all similar with the info and data tracking they offer. I mainly just have different ones for the different images for suze each week. I have The Bump, What To Expect, and Ovia Pregnancy.

thank you so much