My wife and I are trying to get pregnant. Are there any apps you suggest to assist in timing and planning? Thanks.

Many options. There are many trackers out there. Selene fertility awareness allows you to track symptoms and temperature in what seems to be an easy to use format.
#1 see her familydoc. And her OB doc as she may need to get on a different BP med that is safe for pregnancy before she gets pregnant #2 she should be taking a multivitamin and extra 1mg extra Folic Acid #3 make sure she is ovulating , so get a kit at the drugstore and she need to check during the middle of her cycle is she ovulates it should be 14 days before her period, and see if her OB rec anything else.