Knowunity

AI learning companion atop a community homework-help platform.

Brainly is a global learning platform where students get homework help backed by a moderated base of community and expert answers. It layers AI on top of that knowledge base — an assistant named Ginny that simplifies, expands, and personalizes answers across school subjects and grades. The free Q&A community is supplemented by a paid Brainly Plus tier.

AI study companion — snap a photo of any homework problem for step-by-step help.

A photo-based AI homework helper from ByteDance covering math, science, and humanities. Students photograph a problem and get step-by-step explanations, voice-based tutoring via the AI Live Tutor, and whiteboard-style walkthroughs, with live human tutors available as an escalation. Free to use with limits; a Gauth Plus subscription unlocks unlimited solutions and faster answers.

Scan a math problem with your camera for step-by-step solutions.

A mobile math app that solves problems scanned with a smartphone camera, using OCR and AI to recognize handwritten and printed equations from arithmetic through calculus. It returns detailed step-by-step explanations to help students learn the method, not just the answer. The free app handles many problems, while Photomath Plus adds animated tutorials and textbook solutions.