A live tutor that talks and draws
Porphy's live tutor is an AI, not a person — which is why it answers in seconds at 2am instead of next Thursday. Highlight any line you are stuck on and a real-time voice session opens: it explains that line out loud while drawing on a whiteboard beside it, in বাংলা or English, with 9 voices to choose from. It costs 20–60 credits a minute, and the 2,000 credits every new account starts with cover a real session before you pay anything.
The live tutor, in short
- What it is
- A real-time voice session with a shared whiteboard, opened from any line you highlight
- Human or AI
- AI. No human tutors are matched, booked or scheduled
- Languages
- English and বাংলা — spoken, not subtitled, with technical terms kept in English
- Voices
- 9, each with a Bangla sample you can play first
- Cost
- 20–60 credits per minute (1,000 credits = $1 ≈ ৳125)
- Free to start
- 2,000 credits on signup, no card, never expire
- Ends
- By itself, after about a minute of silence
- Can generate mid-call
- Flashcards, MCQ sets, and visualizations
- Works on
- A researched course, or your own uploaded PDF (must contain real text — no OCR step)
- Runs on
- Any modern browser, phone or laptop. Needs a microphone. Nothing to install
Two beams of light meet on the screen. Where the path difference is half a wavelength, the bright fringe you would expect turns dark.
The bright bands sit where the path difference is a whole number of wavelengths — there the waves arrive in step and reinforce.
Same light, same screen: the pattern is just the two paths agreeing or disagreeing, fringe by fringe.
Real capability, recreated here — the tutor speaks and draws in the app.
What happens on a call
Not a chatbot reading an answer aloud. A tutor with a pen, working on the line you pointed at.
It speaks, and you can interrupt it
A real-time voice session, not a chat box. 9 voices, each with a Bangla sample you can play before choosing. Cut in mid-sentence and ask again in your own words.
It draws while it explains
A shared whiteboard beside the text. Axes, a curve, the tangent, the step you missed — drawn as it is spoken, because some things are not explainable in prose.
It makes things mid-call
Ask for a flashcard deck on what you just fumbled, a quick MCQ set, or a visualization of the concept, and it generates them without ending the call.
It teaches in your language
Bangla natively, out loud — not subtitles over an English answer. Technical terms stay in English, so what you hear matches your textbook and your exam script.
It works on your own PDF
Upload your lecture sheet, a chapter or a past paper and highlight a line in your own document. The PDF needs real text — a photographed page needs OCR first.
It hangs up on itself
After about a minute of silence the call ends, deliberately. An open session left running would quietly meter credits while you read.
What a minute costs
20–60 credits per minute · 1,000 credits = $1 ≈ ৳125
Top up in taka with bKash or a local card — see how payment works from Bangladesh. Weighing this against a private tutor? That comparison is here.
About the live tutor
It is a real-time voice conversation, not a chat box. You highlight the line you are stuck on, a session opens in a few seconds, and the tutor explains it out loud while drawing on a shared whiteboard beside the text — arrows, axes, a curve, the step you missed. You can interrupt it and ask again in your own words, the way you would with a person at a table.
An AI, and the page says so everywhere on purpose. There is no human on the other end, no scheduling and no waiting list — which is the trade: you lose a person who knows you, and you gain one that is available at 2am, never tires of the same question, and has just read the research behind the chapter you are on.
Yes — natively, out loud, not as subtitles or a translation pass over an English answer. Technical terms stay in English while the explanation is in Bangla, so what you hear matches your textbook and your teacher. There are nine voices, each with a Bangla sample you can play before you pick one.
It draws on the whiteboard as it speaks, and it can generate things mid-call: a flashcard deck on what you just struggled with, a quick MCQ set, or a visualization of the concept. It can also ask you to explain the idea back in your own words and tell you what you left out — which is the part that actually shows whether you understood it.
20–60 credits a minute, metered while you are actually talking. At roughly ৳125 per 1,000 credits that is a few taka a minute, and the 2,000 free credits every new account starts with cover a real session before you have paid anything. Nothing recurs and there is no minimum session length — a ninety-second explanation costs ninety seconds.
It hangs up after about a minute of silence, deliberately. A voice session left open would quietly meter credits while you read, so the call ends itself rather than trusting you to remember. Reopening it is one click on the next line you get stuck on.
Yes. Upload the PDF — lecture slides, a chapter, a lab manual, a past paper — and the live tutor works on it exactly as it does on a researched course: highlight any line in your own document and ask. One limit: the PDF must contain real text, so a photographed or scanned page needs OCR first.
No. It runs in a browser on a phone or a laptop and needs a microphone and a working connection. There is nothing to install and nothing to book.
Ask it the line you're stuck on
2,000 credits free, no card and no booking. Open a chapter, highlight a sentence, and hear it.
Talk to the tutor See everything else it does