4 stars: Great and simple to use app! The learning curve is not that high as everything is user friendly and natural to use, unlike when using different other calculators. Though my only comment is that, it doesn't have all the features of a fully fleged scientific calculator such as solving a linear or quadratic equation (or not that I am aware of). Other than that, I'm really happy with the product and I've been using it quite extensively during my studies. No more hogging around bulky calculators for me!
4 stars: The best calculator app. Totally recommend for scientific calculations. Doesn't stutter or lag even a bit. Just one thing - the "you" and "NSC+" tabs are just below the "zero" decimal and the "x10^" buttons. This results in opening of the tabs instead of tapping of buttons. This sometimes becomes a problem. Besides all this, the app is very good. Light and easy to use. I definitely recommend it.
4 stars: Great calculator with everything I need. A lot of work has been put into this. However I did not give it a full rating, because of the buttons. I frequently type the wrong things, because the numbers and symbols are not in the centre of the buttons, and the lines that distinguish the buttons are hard to see. I therefore tend to type the adjacent buttons. It reduces the quality experience of the app.
5 stars: I love the app, easier and faster than a real scientific calculator. Now my question is: Do you have some sort of account linked to the app? I...