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I didn't like this app at all. It was attractive at first -- cute enough that I paid and upgraded to have the numerous ads removed -- but it wasn't as good as I thought. My biggest pet peeve is how everytime you enter a number, it does this highlight thing where it shows you all the other locations of the number you just entered. There's no setting to remove it and it's incredibly distracting and time-wasting. There’s also no way to see which ones are the answers and which ones are the pre-populated ones. It loads fairly slowly, too, and all that unnecessary effects get in the way of the game. The numbers are not that bad responsive and if you accidentally put it a number as an answer instead of a note — and if that number happens to be correct, it won’t let you delete it. Which is frustrating because I don’t want to win easily. Overall, it's for casual, infrequent players. For those who play more frequently, I recommend other sudoku apps that's less frills and more sustance.

I used to recommend this app as the best visual experience for playing Sudoku. I paid for the full version 2 years ago because I loved the color palette and minimal aesthetic that allowed me to focus on the puzzle itself. However, with the the latest update, I no longer feel comfortable recommending it and may even uninstall it. I understand incentivizing people to pay for the full version, and paid to remove ads years ago when they were full screen 30-second spots. Now there is an obnoxious remix of Futurama and Rick & Morty clips that cannot be muted or stopped the moment you open the app. If this were April 1st that would be one thing, but surprising the user in this way seems like an exploitative way to push them to the ad-less version. I'm glad I paid before this update because I would hate to support this marketing tactic.

I’ve had this app on my phone for years and loved it. It’s a beautiful game, simple design and I love the colors. I had even paid for the full version. After a new update a few months ago the ads are back and I’ve tried to hit “restore purchases” but nothing worked. I have no desire to pay for it again, so have been playing with adds. They are more annoying than before. My real issue is that today an “ad” that was a very graphic porn clip popped up in the middle of playing. I canceled out of it and deleted the game. This happened once before a week or so ago.. I laughed it off and forgot about it until today. Obviously it’s something to be concerned about. I noticed a couple other commenters have had this problem. Developers (possibly Apple as well) need to address this before a child sees it.