A1 Calc app for iPhone and iPad

My App can perform all kind of functions in landscape mode and can do all basic operations in portrait mode. It is capable of performing multiple operations at single time and the typed equation as well as result are shown side by side.
It has the following features:
- It can do factorial of a given number from any number till 1000.
- It has the most accurate answers.
- It can calculate sin, cos, tan, cot, sec and csc functions of trigonometry.
- It can calculate log of any base and also exponential.
- It has pi and can return absolute value of answer.
- It can change question to the answer. ie it will add the answer to the question.
- It can round numbers to 2, 4, 6, 8 and 10 decimal points.
- It can give answer till 15 digits after decimal points.
- It is built in dark theme to protect your eyes and to save your mobile battery.
- It also has attractive and beautiful splash screen.

It will help people having to do work in any field, from engineering to commerce, from students to PhD.