OpenCalc - Calculator is a tools app developed by Darkempire.
Download Statistics
OpenCalc - Calculator has been downloaded 270 thousand times. In the last 30 days, the app was downloaded 5.9 thousand times.
User Ratings
OpenCalc - Calculator is rated 4.14 out of 5 stars. The rating is based on 1 thousand 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.
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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.
★★★★☆Jason· Feb 12, 2025
Hello Dark empire, App doesn't close with lock screen. i.e. when the lock screen button is pushed screen turns off but when it's pushed again the calc app is open and usable without unlocking the phone. I actually like that it does this, but it needs a setting to enable or disable this function. Keep up the good work.
★★★★★Denis Mattos· Jan 10, 2026
Opencast is awesome, free and independently developed. That, alone, is worth 5⭐️ in my book. But feedback is important, all the same. So: the history is still being randomly erased. For long-term history, this is almost irrelevant, but can be quiet bad when you're doing several calculations and short-term vanishes suddenly. I know the latest update addressed this, but I have it up-to-date, and it's still happening.
★★★★★Govind· Mar 8, 2026
Really great app, appreciate it simplicity and also to mention that is material you implement is better than default google calc app. I download it at the first place because I wanted the amoled theme and current I'm enjoying that
★☆☆☆☆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.
★★☆☆☆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.
★☆☆☆☆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!!!
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 0 libraries.
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.
