This app was mentioned in 2 comments, with an average of 1.00 upvote
If you ever make conference calls, check out MobileDay on iOS and Android. It dials you into your meeting with one tap.. and works with any service.
iOS
Android
Full disclosure: I work there. We're a small startup but our app is awesome!
Totally!
https://play.google.com/store/apps/details?id=com.mobileday&referrer=af_tranid%3Dcom.mobileday_8e0554c5-28d1-4488-8e8e-b19c1d0e9491%26pid%3DWebsite