# The Devil's Calculator — user reviews > 39 indexed App Store user reviews of The Devil's Calculator by Cinq-Mars Media, rated 4.80/5 from 228 ratings. - Source: https://appshunter.io/ios/app/the-devils-calculator/id1447599858/reviews - App overview in markdown: https://appshunter.io/ios/app/the-devils-calculator/id1447599858.md - Rating breakdown: 5★ 211 · 4★ 9 · 3★ 1 · 2★ 2 · 1★ 5 ## What do users think of The Devil's Calculator? Overall sentiment: positive **Pros** - 💡 Most creative idea ever - 🧠 Genius puzzle design - 👍 Fun and educational - 🚀 Brilliant game concept - 🤓 Great for math lovers - ✨ Unorthodox math thinking - 💯 Infinitely clever - ✅ No ads (mostly) - 🎮 Great for passing time - 💡 Replaces school math - 🧠 Brain busting challenges - 💯 Very clever and fun - 🏆 Top puzzle game - 🤩 Awesome game - 📚 Compels learning new concepts - 🌟 Well-designed puzzles - 💡 Innovative math puzzles - 👍 Great for logic games - 🎮 Highly addictive - 💯 Groundbreaking for users - ✅ Affordable app - ✨ Creative and intelligent - 👍 Good for no wifi - 💯 Best game for math - 🤩 Absolutely fun - 💡 Unique puzzle mechanics - 🧠 Strains the brain - 💯 Great concept - 👍 Enjoyable puzzles - ✅ Good for mental exercise - 🎮 Highly recommended - ✨ Fun and challenging - 👍 Good for problem solving - 💯 Well made - 💡 Brilliant mix of code-breaking and math - ✅ Good DLC content - 👍 Fun with family - 💯 Very good game **Cons** - 😠 Tedious late puzzles - 🐛 Calculator responsiveness issues - 🐛 Wolfram graphing feature doesn't work - 🐛 Progress saving issues - 🐛 Calculator malfunction - 🐛 Exploit allows bypassing levels - 🐛 Graph to Wolfram Alpha function doesn't work - 🐛 DLC Level 6 problem - 🐛 Lost progress - 🐛 Confusing progress saving - 🐛 Very dull and tiresome - 🐛 Arbitrary and unsatisfying puzzles - 🐛 Trial and error heavy - 🐛 Basic and bland calculator interface - 🐛 Loading screen issue - 🐛 Third operator puzzles tedious **Commonly reported bugs** - Some late puzzles with the third operator get too tedious with too much trial and error - The built-in calculator needs some work and button responsiveness isn’t always the best. - The graph to wolfram alpha function doesn’t seem to work. - There’s unfortunately an exploit I accidentally discovered that allows you to bypass any level. - The “real” calculator malfunctions when you want to use the answer you got previously, like if I input “330 * 2”, getting 660, then pressed “+6” on the next row, instead of showing 660 + 6 = 666, it’d show 2+6 = 8 - Lost progress again from 38 to 33. iPhone XS Max, iOS 12.4.1. - My progress seems to be undone somewhat arbitrarily. I was working through the 50s, and when I booted up the game today, my progress had reset to level 35. - The wolfram graphing feature doesn’t work. - There’s a problem with DLC LEVEL 6 however. **Most requested features** - Update the app - Fix DLC Level 6 - More levels ## Newest reviews (13 of 39) ### 5/5 — Great game *2023-06-11, version 6.0* Enjoying it, but the graph to wolfram alpha function doesn’t seem to work. I love the puzzles though. ### 5/5 — Very clever *2023-05-30, version 6.0* 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. ### 5/5 — Great concept and awesome game *2023-04-21, version 6.0* It’s really good for passing time and rarely has adds. ### 5/5 — This can basically replace school tbh *2023-02-10, version 6.0* 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. ### 5/5 — Great game but… *2023-01-26, version 6.0* 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. ### 5/5 — Brain Busting! *2023-01-18, version 6.0* Use no hints and this puzzle game becomes awesomely challenging. Sometimes I need to stew on it for hours or return to it the next day. Can produce a lot of outside the box thinking while reviving your math skills Improves problem solving skills for those times when you just can’t “Google” it (Well you can but then what have you achieved) Well made game in a simple format! Challenge yourself!!! ### 5/5 — Extremely clever and fun *2023-01-04, version 6.0* This game is a brilliant mix of code-breaking and practicing your mental math. The levels are very creative and well designed, and rarely do you feel lost and without direction in a given level with many of the built in tools that can help you(the graph is a life saver). Can’t recommend it enough, try it and see how far you can get! You’re sure to be challenged. ### 5/5 — top 10 puzzle games in my life *2022-12-08, version 6.0* this game, like other games (witnes) is one of the best puzzlegames i have ever played in my life. i have the full game on steam and its very good. very nice owo ### 5/5 — Awesome Game *2022-11-26, version 6.0* I’ve never played a math game that is this fun ### 5/5 — Awesome game! *2022-11-24, version 6.0* I discovered this game through the YouTuber aliensrock (who makes it seem far easier than it is). I have been really enjoying the puzzle solving and variety this game offers compared to other games. It’s also pretty awesome to be able to get the full game through having a university email. ### 5/5 — This game is the equivalent of learning the hard way *2022-11-17, version 6.0* As someone whose never been very good at math, the puzzles in this game have forced me to learn a lot of new concepts. But the puzzles are designed in a way that compels you to learn. There is always a skip button, but I rarely feel inclined to use it, and instead, I try to learn the concept and beat the puzzles legitimately. It’s rare that I find a puzzle game related to math, that I really want to play and continue playing, but this is that puzzle game. With 70 levels in the base game, and plenty more in the dlc, there are plenty of opportunities to learn. 5 stars on all fronts. ### 5/5 — Awesome game, broken feature *2022-11-11, version 6.0* This game is like a much better version of calculator: the game. Only problem is the wolfram graphing feature doesn’t work. Not a huge problem so still 5 stars ### 5/5 — 面白い *2020-12-09, version 5.5* 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。 ## Most critical reviews (10 lowest-rated) ### 1/5 — This is HARD *2023-08-09, version 6.0* SOOO HARD but I won’t put low stars since It aint advertised to be easy ### 2/5 — Problems *2026-03-27, version 6.0* Ads Completely frustrating operations Me having to skip levels ### 2/5 — Why? *2025-09-07, version 6.0* Cant use devils calculator as a calculator instead you have a second basic and bland calculator. interesting concept, actual calculation interface ruins the immersion. ### 2/5 — Very dull *2019-02-17, version 1.2* Gets very tiresome, very quickly. The puzzles are arbitrary and unsatisfying, since the best strategy just seems to be repeated guessing. ### 3/5 — I like this *2023-06-09, version 6.0* I like math ### 4/5 — Truly an educational game *2026-01-28, version 6.0* Unlike most attempts, which can more accurately be described as “educational” game or educational “game”. I’m genuinely having fun while also brushing up on my math and logic. Who knew the number 666 could provide such a wide variety of puzzles. Update: knocking off a star because some of the late puzzles with the third operator get too tedious with too much trial and error ### 4/5 — Great for math lovers! *2023-06-03, version 6.0* 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. ### 4/5 — Finally, a good puzzle game! *2022-12-22, version 6.0* A real puzzle game with different problems to challenge you. One slight gripe, the “real” calculator malfunctions when you want to use the answer you got previously, like if I input “330 * 2”, getting 660, then pressed “+6” on the next row, instead of showing 660 + 6 = 666, it’d show 2+6 = 8 Still, awesome game! ### 5/5 — Insane *2025-12-31, version 6.0* Most creative idea ever No ads(besides ones that you can close immediately and self promote their other games) Fun Best game for no wifi(however if you don’t have wolfram downloaded you can’t use it) ### 5/5 — Truly an educational game *2025-12-15, version 6.0* Unlike most attempts, which can more accurately be described as “educational” game or educational “game”. I’m genuinely having fun while also brushing up on my math and logic. Who knew the number 666 could provide such a wide variety of puzzles. ## Most praised reviews (8 highest-rated) ### 5/5 — It’s bad just a loading screen σ_σ *2025-07-25, version 6.0* UPDATE NOWWWWWWWW ### 5/5 — Genius *2025-05-19, version 6.0* If you love puzzles & logic games, and are okay with basic maths, this game really is brilliant. You can use the calculator as much as you want in terms of guesses, and explore your possibilities. Algebra meets functions & you can skip a level you can't figure out. Some of them I still haven't solved, but that's probably the fun of it! Thank you for making such a creative intelligent and affordable app! ### 5/5 — Amazing *2025-02-13, version 6.0* This game is exactly how my brain works out formulas in math. Ive never been amazing at math but I’ve always tried to explain to people that my brain thinks math in an unorthodox way. The Devils calculator is how my brain works out math in a nutshell. This is groundbreaking for me. ### 5/5 — Great puzzle game *2024-11-17, version 6.0* I love this game I think I’m a little too addicted to this but amazing game ### 5/5 — Get this game right now *2024-11-12, version 6.0* very fun, had a blast playing ### 5/5 — This is cool *2024-04-12, version 6.0* Wow! This game cured my prostate cancer! Thank you developers! ### 5/5 — Johnny’s review *2024-04-06, version 6.0* This is a very great game! ^_^ ### 5/5 — Nice *2023-07-18, version 6.0* Cool puzzles, and I can yeet the default calculator app now. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*