The Devil's Calculator

Интересно занимает время, для тех кто любит математику сложно остановиться.

This is a very great game! ^_^

Cool puzzles, and I can yeet the default calculator app now.

Enjoying it, but the graph to wolfram alpha function doesn’t seem to work. I love the puzzles though.

I like math

Really fun to sleuth for the answers and some levels are quite tricky!!! The built in calculator (when you press and hold on the display area )needs some work and button responsiveness isn’t always the best.

This game is infinitely clever and perfectly scratches that itch if you are looking for challenging math riddles. Most games like this do not scale the difficulty well, but this one manages to give you more and more tricky situations without feeling unfair. I greatly enjoy it and would recommend to anyone who enjoys math riddles or puzzles.

It’s really good for passing time and rarely has adds.

Easily more fun, challenging, and educational than any math class I've been in. I'm getting ready to go back to school and this math game has been helping me a ton. The sheer joy of figuring out a pattern is just so good. And it forced me to look up math concepts I forgot about so now I remember factorials and base conversions...and some other stuff I may have never learned. Being able to buy a game outright with no ads or "energy" is also a real breath of fresh air. More games like this please.

Don’t get me wrong the game is great, it’s just that there’s unfortunately an exploit I accidentally discovered that allows you to bypass any level. It involves plugging in one attempt, then using the calculator function you get from holding the screen type in an equation that results in 666. Due to the game plugging the answer you get from the calculator function into the puzzle calculator and you had already previously typed out an attempt, the answer gets replaced with 666 allowing the player to click the equals sign and pass the level. Again this is a great game, and I wanted to bring this issue to the developer’s attention.