Aster turns visual learning into an accessible, audio-first experience for blind and low-vision students.
AsterAster understands the entire video and explains important visual information in a way a visually impaired learner can understand.
The creator keeps speaking and Aster pauses only when visual information needs explanation.
Aster narrates the entire lesson visually, describing what appears on screen.
Aster becomes a personal tutor that answers questions, re-explains difficult concepts, and guides students through what they are learning.
Upload notes, textbooks, or PDFs. Aster understands the material, explains it accessibly, and creates quizzes to help students learn.
How it works
YouTube videos, notes & PDFs
Aster understands text, visuals, diagrams, code and context.
Listen, ask questions, understand and practice.
The Aster difference
When a video reaches visual information that matters, Aster pauses and describes what sight alone would reveal — then the lesson continues.
AsterNarration
Visual gap detected
Aster explains
Video continues
“The diagram shows a binary search tree with 10 at the root, 5 on the left, and 15 on the right.”
Interactive AI tutor
Aster is a patient tutor that answers questions, re-explains difficult concepts, and guides students through what they are learning — by voice or text.
Of course. Think of the root as the starting point — 10 sits at the top. Everything smaller, like 5, branches to the left. Everything larger, like 15, branches to the right.
Physics — Chapter 4
This page introduces Newton’s second law. The diagram shows a mass being pushed by a force, producing acceleration proportional to the force and inversely proportional to the mass.
Ready for a quick quiz?
What happens to acceleration if the force doubles?
Where possible, Aster runs AI models locally on the learner’s device, reducing dependence on cloud APIs and per-request costs while keeping learning content private.