RCalc is a calculator for rational numbers.
Its dual numeric keypads enable you to enter rational numbers almost effortlessly.
You can add, subtract, multiply, divide, and even factorise rational numbers.
You can also explore the prime factors of numbers with prime factors not exceeding a certain (large) limit.
You can save your calculations as programs and open them later.
Its zoomable output display allows you to magnify its contents for easy viewing experience.
Once installed, RCalc does not need any any internet connection.
With Family Sharing set up, up to six family members can use this app.