The app is good but the differences between the premium and free version aren't mentioned at the beginning. It is also not possible to start using the app without the "free trial period" as far as I have seen. After the forced free trial period I now realize that the sync function which enables you to use pc and and. app simultaneously is indeed a premium function. This seems awful lot like the way Evernote took, I want to buy my apps because I appreciate the work, not because I'm forced into.