The Devil's Calculator

レベル22までは無課金でできますが、それ以降は370円課金することで続きをプレイできます。 頭の体操にとてもよく、数学好きな人はハマると思います。 全て英語で書かれているのでルールは少し分かりにくいですが、｢devil calculator 攻略｣と調べると日本語でルールや攻略が載っているので、そこでルールを確認してください。

変な関数の中身を計算結果から当てるゲーム。結構楽しい。

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.