So many great things about this app. Some of my favorites - not only can you set alerts for individual prayers but you can also schedule to have prayers and/or categories display only on specific days; this gives you a single view of everything youve set to pray about for that day. So if you have lots of prayer requests and its a challenge to pray about every single one of them every single day, this feature is of tremendous value. I also really appreciate being able to designate a prayer as answered rather than simply deleting it, which gives you an opportunity to occasionally look back at all the Lord has done and be encouraged. Clearly a lot of thought went into the interface and it paid off. The iCloud synchronization is fantastic, too. Why did I only give it 4 stars then? (I would give it 4.5 stars if I could.) As much as I appreciate how well the interface functions, Im not so crazy about its design graphically; its certainly polished but it doesnt flow visually very well with iOS 7 in my opinion. Its better suited for the skeuomorphic days of iOS 6 and earlier. I suppose it should be no surprise then that this app supports iOS 5 and later. So to sum up, I dont think youll find a better iOS prayer app than Prayer Notebook. Enjoy!