4 stars: Good app, would be nice if you could cross out clues once you've used. No obtrusive ads, happy to watch a few ads to unlock levels.
3 stars: There isn't much room on the screen to see the puzzle, and so few are available for free. The rest have to be purchased or watch an ad. There are other apps with similar puzzles that are free and better laid out.
5 stars: Great logic game, lots of choices and levels for all types of challenges from beginner's to pros
4 stars: I really appreciate the lack of ads, and the puzzles are mostly well written. The only problem: a few puzzles are definitely written by non-native English speakers. As a result, the clues are either impossible to discern with the info provided, or have actually been written incorrectly. It's only a very few though, otherwise definitely worth playing.
4 stars: Best grid puzzle game I've found. Very enjoyable, challenging and well put together. Not 5 stars because I would like a setting to mark errors as you make them. Easy to reach a wrong conclusion, so I'm constantly pumping erase errors. Which does not work 100% correctly. If you place a wrong dot, then erase errors will remove the dot, but not all of the crosses that came with it. Still very enjoyable
3 stars: Fairly reasonable price to unlock the extra puzzles and I like the layout, although those on small screens or without a stylus may struggle. Main problems are: awful English translations, leading to confusion over many of the cl...