OpenCalc - Calculator

3.1.4

Darkempire

4.13

981 reviews

100,000+
Downloads

Free

Simple and beautiful calculator

About OpenCalc - Calculator

OpenCalc - Calculator is a tools app developed by Darkempire.

Download Statistics

OpenCalc - Calculator has been downloaded 260 thousand times. In the last 30 days, the app was downloaded 4.5 thousand times.

User Ratings

OpenCalc - Calculator is rated 4.13 out of 5 stars. The rating is based on 980 ratings.

App Information

OpenCalc - Calculator is FREE to download. The APK download size is 1.96 MB. The latest version available is 3.1.4. The last update was on January 22, 2025.

Technical Requirements

OpenCalc - Calculator requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play November 2022.

Description

This modern and beautiful scientific calculator will help you solve all your calculations. It is simple, effective and contains no advertising. It has different themes to suit your phone perfectly.

More data about OpenCalc - Calculator

Price	Free to download
Total downloads	260 thousand
Recent downloads	4.5 thousand
Rating	4.13 based on 980 ratings
Ranking	Not ranked
Version	3.1.4
APK size	1.96 MB
Number of libraries	21
Designed for Android	5.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the OpenCalc - Calculator app

OpenCalc - Calculator compared with similar apps

Common keywords of similar apps

Opencalc Beautiful Calculator Simple Calculations Functions

Keywords missing from this app

Scientific App Basic Math Advanced Features Calculation Operations Converter Unit Addition Arithmetic Calculate Easy Time Solve Currency Support Calculators Multiplication Division Supports Conversion History Calc Subtraction Fraction Problems Trigonometry Daily Everyday Tool Convert Free Users Square Trigonometric Key Results Perfect Recent Making Engineering Complex Perform Fast

Google Play Rating history and histogram

650

100

140

Downloads over time

OpenCalc - Calculator has been downloaded 260 thousand times. Over the past 30 days, it averaged 150 downloads per day.

Changelog of OpenCalc - Calculator

Show changelog

Developer information for Darkempire

Darkempire

darkempirepro@gmail.com

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Comments on OpenCalc - Calculator for Android

★★★★★ Chris51 · Mar 3, 2026

This is the best calculator on the play store. No ads, no in-app purchases. Simple, straightforward, does sums. One word of warning, go into settings and set the number of decimal places to e.g. 10, otherwise some calculations (dividing little numbers by big ones) will give 0 as the answer.

★★★★★ roger pupo · Mar 28, 2026

Great calculator, better than the one that comes with phone

★★★★☆ Alan Bruce · Jul 1, 2025

All good except one small point. The history doesn't work until you enter a new calculation. Open the app, try to access the history, it's blank. Enter 1+2 and hit return and the history is there.

★★★★☆ Cytrozer · Mar 21, 2025

Bug report: the dark theme in this app is displayed as "amoled" while amoled is displayed as "dark". Everything else is excellent, and... especially, open-source.

★☆☆☆☆ David Roberts · Aug 12, 2025

Where's the memory keys?!?! This app would be perfect otherwise. The memory keys could be turned on in the settings. Otherwise, this would be five stars perfection.

★☆☆☆☆ Gord Zaretzki · Aug 19, 2025

THIS IS A DESPICABLE SPY APP WITH HUNDREDS AND HUNDREDS OF APP TRACKING ATTEMPTS BLOCKED BY MY APP TRACKER/ BLOCKER EVERY DAY!!!

★★☆☆☆ B · Mar 20, 2025

Good start, my 2 issues: the dark theme buttons are egregious. The bright RGB UI looks amateur. E.g: Using the My Material design with my phones dark mode on looks amazing. There needs to be a My Material (dark) theme as an option, I'm not switching to dark mode on my. Phone specifically for this app. The drop arrow containing cos, sine, etc. doesn't stay down. I have to press it each time I open the app. For me, the button size and spacing is perfect when the drop down is. Please add these!

★☆☆☆☆ Tracie Green · Apr 9, 2025

I've had to delete this app because no matter what I do, it will not retain history. I've emptied cache and storage, and it's made no difference. I've uninstalled and reinstalled, and it's made no difference, the history is not retained.

Google Play Rankings for OpenCalc - Calculator

This app is not ranked

Technologies used by OpenCalc - Calculator

OpenCalc - Calculator is requesting 4 permissions and is using 21 libraries.

Permissions

Hardware controls

control vibration

System tools

draw over other apps

Extra

android.permission.USE_FULL_SCREEN_INTENT, com.darkempire78.opencalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library

Android Support Library collections Kotlin Android Library Icon

Kotlin

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager

Android Support Library Print

Android Support Library Document File AndroidX Widget ViewPager2 Android Library Icon

AndroidX Widget ViewPager2 JetBrains Annotations Android Library Icon

JetBrains Annotations IntelliJ IDEA Android Library Icon

IntelliJ IDEA

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