FX Calculus Problem Solver

Though this application has topics and concepts that are seemingly helpful, there are parts that don’t function as expected. I purchased the premium package sometime ago with an older iPhone... it worked. I have had my iPhone X since they were first released, and the above referenced feature crashes when I attempt to launch it. I sent an email several days ago, but have not heard back from the support team. Hopefully, the app is still supported and is not one of those the developer allows to die on the vine!! On a scale of 1-5 with 5 being highest: Reliability - 1 Quality performance - 1 Customer Service - (-1) off the range Information - 1 Value/Price - 1 Overall, one star until, and if it’s corrected!!

Great for simplex problems, but needs a lot of organization. A lot of problems I have I can't input because the sustem doesn't allow it.

I love how it works like mathway in the way it shows all of the steps but you only need to pay once instead of monthly. I wouldn't mind if there were ads so they could get a little money towards improving the app though. For example, it fails when I don't have a really really good connection and it does crash a lot when I try more complicated integrals. Sometimes, the menus won't unexpand and I don't have great eyes which makes it harder for me to see. Plus, I keep on having to add extra inputs into the keyboard. I can't save the layout or anything like that. Other than that, it's a pretty well put together app.