There are many software programs for solving maths problems, and directly for solving equations, simply by entering data and seeing the results instantly, often in graphic form.
Eular Solver is this type of application, but specifically for Eular equations. In addition to solving these equations, with Eular Solver you can also draw and study the graphs it produces.
The program interface is just a window with the following parts: equation, initial conditions, Delta values, desired result, known solution (optional), result, and graph. The last two are those that Eular Solver shows you after the calculations. The others are fields you must fill in.
Eular Solver is completely free and only needs a little more than one megabyte of space. Light, manageable and simple (there are no other options etc to make things complicated). It does exactly what it says it will do.