Question: I'm looking for a homework assistant that can help with math, chemistry, physics, and biology problems.

If you're looking for a more general-purpose homework help tool, UpStudy could be a good option. It uses AI to help with math, chemistry, physics and biology problems with explanations of each step. It covers a broad range of math subjects from basic arithmetic to advanced calculus, and you can get 24/7 access to live tutors and a large library of worksheets. The premium subscription adds features like unlimited questions and expert help.

Another powerful option is Gauth, which combines AI with live tutoring for an immediate answer to math and science questions. It covers subjects like calculus, physics, chemistry and biology, and premium options like unlimited answers and professional tutoring are available with its PLUS membership. Gauth is available on multiple platforms, so students can get both AI-powered answers and human help.

If you're looking for a free, broad-coverage learning platform, Khan Academy is a good option. The nonprofit service has a rich library of lessons for math, science and other subjects. It's geared for students from Pre-K to college, with personalized learning paths and resources for students and teachers. Khan Academy is a good way to get caught up on material and to get a better understanding of subjects.

Last, Wolfram|Alpha is a powerful computational knowledge engine that can be used for a wide range of math, science and cultural questions. It can give step-by-step answers, plot functions and perform statistical calculations, among other abilities. It's useful for students doing homework, and its breadth of knowledge means it can be useful for personal projects, too.