The Devil's Calculator

Name: The Devil's Calculator
Rating: 4.8 (243 reviews)
Author: Cinq-Mars Media

By: Cinq-Mars Media App

A Math Puzzle Game

Overview

Version:

6.0

Last updated: 2021-08-25

Ranking

#105,612 ▼ 112

Overall

Features & Capabilities

The Devil's Calculator is a math puzzle game that has been praised as one of the PAX 10 best indie games. It is open-source, nonprofit, and designed to educate as well as entertain, with new levels contributed by famous mathematicians such as Alex Bellos and James Grime. Players reverse-engineer obscured arithmetic functions to purge the demon from the evil calculator, using logic and algebra to interpolate the operators and advance.

The game features hand-drawn artwork, a charming story, and depth through advanced graphing mechanics and a level-editor that lets users create and share challenges. The first 20+ levels are free, with additional DLC levels crafted by educators and mathematicians like Bellos, Grant Sanderson, Tony Padilla, and James Tanton. The title has been celebrated at events like the MOVES conference by the National Museum of Mathematics and was recognized by GDWC and PAX for its innovation and educational value.

User Growth & Download Statistics

App Games Education Open Source Entertainment

By:

Cinq-Mars Media

Rating:

4.80

(243) 1 new ratings

Version:

6.0 Last updated: 2021-08-25

Version code:

843755102

Creation date:

2019-01-11

Compatible devices:

Size:

77.08MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-25

Compare stats and ranking:

Ranking

# 105,612 ▼ 112

Other platforms

The Devil's Calculator: A Math (v3.5.0)

57,377 4.54

(792)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Cinq-Mars Media

Apple Apps Store

https://apps.apple.com/us/app/the-devils-calculator/id1447599858

Website:

http://www.cinqmarsmedia.com/devilscalculator

User Reviews

Users praise The Devil's Calculator for clever, challenging math puzzles that feel educational and addictive, plus helpful built-in tools like graphing and a calculator. Many like the option of an ad-free, one-time-purchase experience. Common criticisms focus on intrusive ads in some versions, progress resets and unclear progression tracking, a Wolfram graphing feature that sometimes fails, and occasional puzzles that rely on tedious trial-and-error. Overall, a strong concept with polish needed for consistency and reliability.

Pros

Clever, challenging math puzzles that feel educational and mentally stimulating.
Strong educational value; players learn concepts like factorials and base conversions while solving.
Helpful built-in tools (graphing and calculator) that aid puzzle solving and immersion.
Ad-free experience or a paid no-ads option (no intrusive ads in at least some versions).

Cons

Ads can be intrusive or frustrating in some versions.
Progress resets and progression tracking can be unreliable or unclear.
Wolfram graphing feature sometimes doesn’t work.
Some late-game puzzles can be tedious or rely on trial-and-error.

Recent reviews

Ads Completely frustrating operations Me having to skip levels

by Un*****, 2026-03-27

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