I recently purchased this application and nearly gave it a one star review. After putting on my detective hat I found that all of my troubles were primarily caused by iOS 8 iCloud bugs that were also harming many other app developers.
I decided to put a hold on my use of the application and not review. Now that iOS 8.1.1 has been pushed out, I finally get to use this application. It is fantastic! I decided to come review this app because I figured the developer has probably taken a lot of flak for things out of their control. Sync is now working great for me. Id say others can purchase without hesitation.
Disclaimer: I am currently on iCloud Drive. Your mileage my vary if you start using this app on the iOS 7 iCloud then make the transition to iCloud Drive with iOS 8
Brady Rosino about Quotebook — Notebook for Quotes