Hi beckie. I use ovia but downloaded pregnancy week by week by anila (or a similar name) i like it because they have keigel exercises (pelvic floor) section and it has exercises to do each day to strengthern muscles....it has a timer too so you know youre holding it for the right time. I agree ovia is easy to use and its good to get tips each day. Finally, i have sprout which has 3D images week by week. Theyre are so many, its hard to know which one to download x