Calc 991 Scientific Calculator

Name: Calc 991 Scientific Calculator
Rating: 4.75 (1229 reviews)
Author: Scientific Calculator 36

By: Scientific Calculator 36

Math calculator plus 991 & calculator pro to solve basic to advanced calculator.

Features & Capabilities

Calc 991 Scientific Calculator is a versatile math tool designed to handle everything from simple arithmetic to complex scientific calculations. Modeled after the 991 calculator, it provides a modern interface and advanced features including derivatives, integrals, probability, and unit conversions. Whether you need to calculate fractions, logarithms, or perform coordinate conversions, Calc 991 ensures accuracy and speed.

With features like calculation history, input editing, and multiple result formats (decimal, hexadecimal, cyclic decimals), this app caters to students, professionals, and enthusiasts alike. Its user-friendly design, comprehensive math functions, and zero fees make it an essential calculator companion for diverse mathematical needs.

User Growth & Download Statistics

App Education

By:

Scientific Calculator 36

Downloads:

244,584 2.54K

Rating:

4.75

(1,229) 11 new ratings

Version:

7.2.5.253 Last updated: 2025-07-13

Version code:

20241201

Creation date:

2022-11-21

Publisher country:

Permissions:

com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_ADSERVICES_TOPICS Low risk
android.permission.FOREGROUND_SERVICE Low risk
android.permission.INTERNET Low risk
android.permission.POST_NOTIFICATIONS Low risk
android.permission.WAKE_LOCK Low risk
com.android.launcher.permission.INSTALL_SHORTCUT Low risk
com.android.vending.BILLING Low risk

Size:

43.46MB

Email:

me*****@gmail.com

URLs:

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-12

Compare stats and ranking:

Ranking

# 139,539 ▲ 1,835

For Developers

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Contact the developer

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

Developed by:

Scientific Calculator 36

Google Play Store

https://play.google.com/store/apps/details?id=scientific.calculator.c880

Email:

me*****@gmail.com

Publisher Change History

2026-01-21: ex*****@gmail.com to me*****@gmail.com

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User Reviews

Users praise the app for accurate emulation of the Casio fx-991CW, ease of use, rich scientific features, and absence of ads, making it a great free alternative to physical calculators. However, multiple reviews highlight areas needing improvement such as the catalog's visual design, usability of certain functions like percentage and equation solving, lack of customization options, and non-working constants and unit conversion features. Overall, it is highly valued especially by students but could benefit from interface and functionality refinements.

Pros