No one makes apps for it because it sucks. From what I understand, trying to develop apps for it is a bad experience.
Not to mention major developers want to focus on the oses that host the most users.
Microsoft doesnt come close to touching android and ios.
Retardation contained
._.
Windows phones aren't terrible, but they haven't been around for very long and only like 1.5% of phone users own one. It's straight up not worth it to develop an app for them.