over the years Ive had this app on 3 different iPhones and the server software is still up on 2 macs in my home. not sure why it doesnt work for some people but Im happy with it (version 3.0.4) running on my current 5s and the server (version 3.0.2) running on both an old 32-bit Mac Pro (10.7.5) and a new iMac (10.9.1). whatevers not working for people might not be this apps fault. 5-13-15 update: now using Mobile Mouse on iPhone 6+ connecting exclusively to an old Mac Pro 2,1 with the EFI hacked (google Piker-Alpha if you’re interested) to run Yosemite and it works great like it always has. kudos to the team. 7-23-15 update: it seems that if I’ve already left a review here the app should stop bugging me to leave a review. same Apple ID, same computer.