The Devil's Calculator: A Math

LiveChristopher Cinq-Mars Jarvis9 apps · 70.4K installsEducationalFreeIn-app purchases: $2.99 per itemcom.cinqmarsmedia.devilscalc

An Educational Indie Math Puzzler for Lovers of Logic and Brain Teasers

Alert me★ WatchOpen in Play ↗
Total installs
59,163
exact · Play shows 50,000+
Installs / day
0
7-day avg · last day 0
Rating
4.5★
798 ratings · 56 reviews
Released
11 Jan 2019
7.8y ago
Last update
23 Sept 2024
v3.5.0 · 2.1y ago
Countries
—
not checked yet

Installs per day

gain of the exact counter

No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play
58,75059,00059,25059,50010 Oct11 Oct
025K50K75K11 Jan 201910 Oct 202611 Oct 2026

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • No data shared with third parties
  • No data collected

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

2 in 1 group
0 Sensitive0 Notable2 Routine
OtherRoutine2

Access to miscellaneous device features that don't fit other categories

  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
An evil calculator has its normal arithmetic operators replaced with sadistically obscure functions. Using logic and a bit of algebra, you must work backwards to interpolate them and purge the calculator of its demons. This new, non-profit calculator game by the creator of Synonymy is sophisticated, and challenging. Non-profit and open-source, The Devil's Calculator is a highly original indie game that's as addicting as it is educational. Accessible to numberphiles and math novices alike, the first 20+ levels are 100% free to play and enjoy. Each level has you decipher the function of a mysterious operator and use it to calculate the number of the beast to progress. Advanced graphing mechanics, countless features and simple, yet innovative level design provide considerable depth to the gameplay. Players unlock the ability to create their own levels and play challenges others have created - including free DLC levels crafted by the game's creators, educators and mathematicians. With hand drawn artwork and a charming story, the Devil's Calculator is a genuinely fun and gratifying puzzle experience. Cinq-Mars Media is a 501(c)(3) non-profit organization developing technology to support scientific research related to human safety and education, and to make such technology and research available on a charitable basis.

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