I am using OS version 10.9.5 & iOS 7. To my biggest surprise, I am unable to access Pages, Numbers, Keynotes on my MacBook as well as iPhone 4s. After efforts, I have come to know that these software versions no longer support documents on iCloud. Whereas, I have to upgrade my softwares in order to do so. Why tis is so ? ? ?
Here 'Apple' could have done this upgrade with limited features on earlier version.