This is a complete tutorial, discussing how to build a simple calculator app for Android. Check it out, and implement some of the recommended improvements.

How hard can it be to write a simple four-function calculator program? After all, computers are good at math, and making a calculator isn’t exactly blazing a new trail, right? But [Chad Nause… ...

Digits Calculator by Shift looks like a simple calculator app for iPad, with very large numbers and a surprising attention to typographic details. There’s a tape on the left side to retrieve all your ...

Where things get interesting is when you realize that Chrome OS’s Calculator is now just a normal web app. And like any good Progressive Web App, it can be used and even installed on just about ...

Apple did not bundle a calculator app with the iPad, but Shift Apps is ready to fill the void. The company’s new iPad app, Digits Calculator, is a minimalistic and simple calculator app that ...