This puzzle game gives you access to a large collection of nonograms which you can solve while you're on a break from work. Your objective is to mark the puzzle's cells based on the indications that are being displayed on each column and line of the board.
The app doesn't provide you with a built-in help guide. Instead, it redirects you to the homepage of the developer where you can find all the information you need to learn how to play this type of puzzle games.
NonogramZ brings you dozens of challenges which are nicely organized into groups based on the board's size (10x10, 10x15, 15x15, etc.). All challenges are unlocked so you don't need to complete previous missions in order to have access to the level you wish to start playing.
Another good aspect is that it provides you with hints that come in handy whenever you're unsure how to mark the grid's cells.
My only issue with this application is that it provides pretty difficult puzzles. So, a beginner player would have a hard time trying to solve any of the offered nonograms.
All in all, this puzzle game was designed for Mac users who are into solving difficult nonograms on their free time. I'd say it's worth installing this free app only if you're an experienced player.