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.
The app allows you to do simple and quick calculations with many basic functions, including multiplication, division, root, powers, factorials and even trigonometry functions. OpenCalc is customizable to meet all your needs.
Contains no unnecessary ads or permissions. It is fully open source.
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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.
Show details
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
