This app still hasnt reached the level of polish that its predecessor Crosswords Classic had. It has some new functionality (like syncing), but other than that its an inferior experience. Mostly thats due to occasional bugs that you will encounter. They are not bad enough to make the app unusable, but do provide minor annoyance at times.
A major quirk is that on the iPhone 5S at least, you dont see the full crossword in view when viewing upright. Even when zoomed out fully, the bottom is hidden and you have to pan up or down. This is true even for small ones like the NYtimes mini crossword. The old app doesnt have this behavior. This might be due to the fact that Crosswords Classic uses its own keyboard which is optimized for real estate. This new app uses the default size of iOS keyboard and this hides much of the crossword. Please bring back the custom keyboard from Crosswords Classic.
Some bugs -
1. On the iPad, the app behaves very buggy when using a Bluetooth keyboard. Turning off Bluetooth sometimes doesnt bring back the keyboard like it should. You have to kill the app and re-open.
2. Deleting and re-downloading puzzles (via long press on the date) can be buggy. Sometimes puzzles dont appear to have been deleted, when you actually have.
3. Sometimes when you view info there is no way to get back to the puzzle. You have to kill the app and re-open.
In general, the app needs some work. It is one of the best crossword apps out there, but the same developers Crossword Classic is still better. That apps layout it more intuitive and most importantly the keyboard allows you to visually see the entire crossword. Most importantly, the new app needs some major bug fixing. Hope the developer gets round to it soon.