PhotoStudy - Stuck on a Math or Science Problem? Get Help From an Expert Tutor in Seconds!
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Delta: Math helper - With Delta: Math helper, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free!
Texmaker - Texmaker, free cross-platform latex editor