I like that it is easy to use for customers, my team likes because we can access our clients' data from anywhere as long as there's an internet connection! You would be losing out if you are not able connect via any of these devices with no wifi or 3G/4g network available - It has been great so far but this may change depending on how they roll-out their services internationally when more countries become partaking of circleloop business tools such as call recording etc.
Currently only US users get all benefits offered by circle loop which i think should come into effect across world soonest possible before competition takes over since its already here since 2014ish.