Fx Calculator 350es 84+ calculator sin cos tan 4.4.1-05-11-2019-19-release

Reviews

4 ★, on 2019-08-17
This app deserves an 'A' for ambition, but it still has a few deficiencies. For example, if you input the basic problem : ( 1+(1÷100000) )^100000 the app will fail to give an answer. This problem should output Euler's number (approximately), and even the Android standard calculator can quickly solve it. (Update June 28, 2019 ...Just installed the latest version. The app still fails to solve the above problem, even after nine months since my initial review.)

4 ★, on 2019-07-21
i haven't used it a lot, but it's a great calculator. My main cricitcim is that it doesn't rationalize radicals. For example, if you do sqrt (3/2), it just returns the same rather than (sqrt 6) / 2. Likewise for complex numbers. Also, when expressing complex mumbers, instead of a + bi, it displays a + i x b. Same with fractions: instead of a/c + b/d i, it displays a/c + (b x i)/d. Unlike rationalizing radicals, this is merely cosmetic, so not a big deal.

5 ★, on 2019-08-10
Well thought out, good interface . The features that puts this app ahead of the others for me :- Good tactile response. No need to press twice. I cant overemphasise this enough !!! Algebraic entry and familiarity with calculators I've used . Yes, the official HP RPN calculators are really good but when you're in a hurry you will key in what comes naturally , which for me is not RPN. Graphic and programming capability and separate screens to make full use of the phone . And Photo Math too!

5 ★, on 2019-06-25
Very convenient when you forget your actual Casio calculator. It actually has a few extra features as well which is nice. Shame you can't take this into an exam though being on a phone! Would recommend this app for sure.

2 ★, on 2019-07-29
garbage. everything is divided into another fraction. 246÷9 gives me 83/2 for the answer. I can divide that out to 41.5 but I use a calculator so I dont have to think at the moment.

4 ★, on 2019-08-12
Great app, however you should let user to have control on closing bracket for some function, for example if I have an existing equation an I want to find it's derivate, when I press the derivative button the argument is already scoped, so I have to copy the existing equation inside the argument.