FX Calculus Problem Solver

It struggles to find solutions to some problems and just comes up with input error and doesn't offer any methods or instructions to fix the problem. Would overall recommend it

thought it goes well in the beginning. But after purchase seem that only equation is cld solve is by "giving crashing apps or cld not solve"......

Nonsense app. ! can't even solve class 12 calculus! What is the use if it solves the questions we can orally solve!!

If I send the Report of crashing, is there anyone who will look at it and fix it? So far my $4.99 are gone down the drain.

App solves a lot of the problems manually entered. Works great but complicated equations can cause the app to freeze

It's not free at all! I love this app it's amazing...I thought that it's free until I opened it another time and I found you need to buy premium pack... Bad!

I can do absolutely nothing without premium pack! And crushes a lot..

Since the entire app is internet operated!! Why app is requesting for premium purchase and hence forth not applicable to use. Please make changes in the app.

Many times it shows the input problem. Especially, after I pay the premium.

The app always stops and won't let me use it after I purchased it.

just invert the color of your phone then you see the answers.you dont need the premium pack

I pay for it and it is not responding. No sirve. Es un fraude. Una falta d respeto.

can't solve many integral equation. such as, ∫(x⁻²+x⁴)⁻¹ dx etc....

I try many apps for solve but every time have faced some problem like app crashed etc but this is a Great apps. Thank you

Useless, could not balance equations or do stoichiometry

When I'm solving problems it show up of errors !

After a continuous use, it crashes down instead of solving the problem...

Mostly fake solution of limit questions

Integral(xARCSIN(x)dx) causes it to freeze. Fail

Works amazingly for most problems, but when trying to enter cos^2 x on integrals the app locks up and has to be restarted. Also cannot find integrals of cubed root or higher. Other than that this app has been great in actually teaching me calculus. Love the video solutions.

No doubt one of the best apps. However, the crashing problem is still there. Whenever you come out of a calculation and press back, the app crashes. Also when it plots the graph, the animation is very intermittent

First it was great.. But a few minutes it was say TO CONTINUE TO ACCESS THE PROBLEM SOLVING SERVER, NEED A PREMIUN PACK

I love its design.It is beautiful and easy to type.The answer is also good, means correct. Great work, but the problem is that it usually said unfortunately the app has stop all time

Worked fine before I bought premium. Now crashes every time I try to use it. Worst app ever

It was very helpful while using the free trial, however I really need the app so I bought the premium pack, ever since I bought it I can't edit any equation, cos² calculations aren't being displayed either, please fix.

It worked nice for some time .after it is asking premium pack

It restarts every time I try to compute higher derivatives. Other than that, it's great!

Why the hell would I pay 5.99 just to see how you solve a problem

There are great video tutorials in the free version of this app. I enjoy reviewing the math problems in this app. The videos are all saved to your phone with the app.

Very great but it says I have to purchase to keep using it? I downloaded it because it was free? I don't get it.

Worst math app ever crashed on my first try

This is the best app for solving every kind hard or easy questions of calculus . It is very helpful in exams not for cheating lolz

its awesome but i need to purchase before i can fully use it. :(

It has the makings of a great app if it wouldn't crash every few minutes.

No way to use it , fix it please

Ok but manually some problems can't do it

Have only used it for a while, but so far so good, i would recommend it to other user's, so as apps go keep up the great work !!!

It's the best I ever tried, I love it

Excellent solver hopefully will be upgraded to show in more details the steps of solution, but still impressive.

You've really done a great job and a big effort.However,it would be better if it was completely free. THANX !