For students. For self-learners.
I'm self-taught. I know what it's like to learn without a guide — to have questions you can't quite articulate, to sense something is off but not know where to look.
These tools are for people in that position. Students in classrooms. Self-learners working alone. Anyone trying to make sense of their own work without someone standing over their shoulder.
The tools don't teach. They don't judge. They surface what's already there — so you can see more clearly what you already sense.
Why free for students?
Because the hardest part of learning isn't access to information. It's knowing whether you're on the right track. That uncertainty compounds — you second-guess yourself, lose momentum, or charge ahead in the wrong direction.
A tool that shows you the shape of your own thinking costs almost nothing to run. Keeping it behind a paywall would solve the wrong problem.
What "free for students" means
Email verification gets you 10 free analyses on any hosted tool. No account setup, no credit card, no trial that expires. If you need more, you can support the practice — but using the tools is free, and always will be.
For self-learners especially
Students in classrooms have teachers. They might not always get feedback when they need it, but there's someone in the room who has seen a hundred versions of the problem they're facing.
Self-learners don't have that. They're working from tutorials, books, scattered advice online. They can't tell whether their confusion is normal or a sign they're missing something fundamental.
I built these tools with self-learners in mind. Not because classroom students don't matter — I teach in a classroom — but because I remember what it was like before I had access to teachers. The isolation. The not-knowing-what-you-don't-know.
If you're learning on your own, these tools are for you.
Who makes this
I'm Prayas Abhinav. I teach in the Interaction Design department at Anant National University in Ahmedabad. I started self-taught — years of learning by doing, failing, and occasionally getting it right. Then a practice-based master's programme at Srishti, Bangalore (2007–9), then back to practice, then a BA in History by correspondence (2021–4) because I wanted to understand how we got here.
The tools here come from teaching. Watching students struggle with the same questions year after year. Struggling myself to articulate what distinguishes work that holds together from work that doesn't.
Koher is a ten-year practice. One tool every three months. If nothing ships, that's fine. The practice continues.
What these tools are (and aren't)
Each tool encodes approximately 40% of what a teacher does — the portion that is pattern-based and repeatable. Surfacing what's clear, what's vague, what's missing. Being available at 2am when the deadline is tomorrow.
The other 60% requires human presence: reading context that language cannot capture, knowing when to break the rules, responding to the individual. That 60% is irreplaceable. Koher doesn't pretend otherwise.
Every tool explicitly states what it is and what it isn't — which 40% it encodes and which 60% requires a human.
- Tools are free for students, always
- Source code is open under MIT licence
- Hosted demos run while community funding lasts
- When funds run out, clone the repo and run locally