Any Microsoft product should have zero stars available. I cannot say strongly enough, if you love crashes, frustration and impossibly awful software. . . then get this app. Imports from Wunderlist do not stay put, they disappeared. Shared lists are now two different lists with the same name. One version shows only completed tasks, my fone shows incomplete. Thanks Bill for your 100% record of ruining everything you buy. Oh and 4.5 stars out of five?? I call BS. Look at the reviews.