MalMath is a math problem solver with step by step description and graph view. It’s free and works offline. 
Solve:
  • Integrals
  • Derivatives
  • Limits
  • Trigonometry
  • Logarithms
  • Equations
  • Algebra 
It helps students to understand the solving process and others who have problems on their homework. It is helpful for high school and college students, teachers and parents.