OpenCalc - Calculator

Darkempire

About this app

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.

Ratings and reviews

Finally, no more using the annoying default Google Calculator which has tons of Google data collection draining my battery sending my data back to Google servers. This calculator is very lightweight at only 2MB and it has a lot of options in the settings. I love the AMOLED dark theme which helps save battery. My only suggestion would to add a "floating window" option like on LG's old apps (known as QSlide).

A FANTASTIC alternative to Google Calculator!!! OpenCalc can do everything Google Calculator can do, and more. The Material You theme is plain eye candy, and I appreciate the automatic switching of themes based on time. The history feature is valuable, letting me access calculations made months or years ago. The app collects no data. And of course, it can do a plethora of operations, from basic addition and subtraction to trigonometry to logarithms. I'm officially in love with OpenCalc!

Whoa! An calculator without spying and constantly updated privacy terms! 😆 And it can calculate too! I hope it also is without constant updates and updated privacy violations too as math is quite stable. Think about the density of the dystopia we are living in, you dont natively have a unspying calculator (or keyboard or etc..) on your superphone and at the same time such option is made hard to find with dark patterns on app store.

What's new

New:
- Use BigDecimal instead of Double
- Setting to convert results to scientific notation
- Add an option to use modulo
- Add an option to select a value instead of copying it
- Add an option to split the parentheses button
- Add an option to disable history
- Add license to about section

Improvements:
- Optimize the calculator
- Replace not essential EditText by TextView
- Enable symbol before decimal
- Scale up the back button hitbox
- Update several translations

Fixes:
- Several fixes...