I really love this app. There are many puzzles to choose from, and you can even pick what size board you would like to play! I also really like how the “notes” feature works—put in numbers into a cell, and if it’s more than one number, the app knows that you want to take “notes” on possible solutions. The only downside—which isn’t too big of a deal—is that you can’t turn off the “hints” or the advertisements. As for the hints, if you place an incorrect number in a cell when you have already solved the cells around said cell, it automatically highlights the error. My play style is to throw in numbers first and then reduce the amount of numbers in a cell, so it’s a bit annoying that I can’t turn off the hints; it would be great to have an “options” menu with the choices to remove hints and to remove ads (for a paid fee, of course). But, other than those two points, I love everything else about the game! It’s really fun. :)

I really like this style of logical puzzle. No guessing necessary. But it always loses the save! I'm tired of losing my progress. There doesn't seem to ever be updates so I guess this is as good as it will ever get. Which is a shame because there's real potential here.

I do like how there are lots of puzzles, but the app is quite sluggish when it comes to putting in numbers. There’s also no way to turn off the hints, and if you accidentally hit the wrong number, it will show that you’re wrong. It’s also rather annoying that there is no control difference in pencil marks vs placing digits, so you have to deselect numbers opposite of what number you want in the box. The main thing that really turns me off is how sluggish it is to put in numbers. Deleted app almost immediately.

Great challenge for the mind. So many games at each difficulty level. Maybe add some warm contrasting colors. Took awhile to get skilled at 9x9 but now that I recognize some useful patterns it’s so satisfying.