The Best Software for
Live Teaching on a
Digital Board.

The best software for live teaching on a digital board is, for most Indian educators, OpenBoard as the writing surface, shared live through your class platform, with every board exported as a PDF page afterwards — a stack that costs nothing. But the software choice is not what decides whether your class works, and treating it as the decision is why so many teachers buy hardware, install three applications, and still lose students in the second week. The variable that actually determines success is smaller and stranger than any feature list: how thick your pen strokes are.

The reason is that a digital board is not a board. It is a video feed, and the person receiving it is almost certainly on a phone. In India that is not a minor demographic detail — mobile is the dominant way students attend online classes, and a board designed on a twenty-four-inch monitor arrives on a six-inch screen at roughly a quarter of the size you were looking at. Everything you found comfortably readable becomes marginal, and everything marginal becomes invisible. The student does not complain about this. They simply stop being able to follow, decide the class is hard, and quietly disengage.

Across the educators onboarding on AllCoaching in 2026, board-teaching problems arrive described as software problems — "which app is best", "should I buy a bigger panel" — and resolve as calibration problems almost every time. This guide covers the software honestly, because the question deserves a real answer, but it puts the calibration first, because that is where the class is actually won or lost.

Your Student Is Watching on a Phone

Start here, because it reorders every other decision. When you teach on a digital board, you are looking at a large monitor at arm's length with your own handwriting at a comfortable size. Your student is holding a phone, often at a lower video resolution than you are producing, sometimes on a connection that is compressing the feed further. The board that reaches them is a shrunken, softened version of yours.

The practical fixes are unglamorous and cost nothing. Increase the pen thickness well beyond what looks right to you — on a large monitor a properly calibrated stroke will look slightly crude, and that is the correct setting. Write larger than feels natural. Cap yourself at roughly six to eight lines per board and turn the page rather than shrinking to fit, which is what an infinite canvas is for. Use dark, saturated colours only; light blue and yellow that read fine on your screen disappear entirely after compression.

The Three Jobs the Software Must Do

Once calibration is settled, the software question becomes tractable, because a digital-board setup only has to do three things. Most teachers evaluate tools on a jumble of features; evaluating on these three separates the choice cleanly.

Notice that no single application does all three well, which is why the honest answer to "what software should I use" is a small stack rather than a product name. Whiteboard applications are built for writing and are poor delivery platforms; class platforms are built for delivery and their built-in whiteboards are usually too thin for sustained teaching. Trying to force one tool to do both is the most common source of frustration in this category, and it is worth simply accepting the split.

The Options, Honestly Compared

Here are the realistic choices for the writing surface, judged on the three jobs above rather than on marketing. All of the ones worth recommending are free, which is worth saying plainly because this is a category where teachers routinely assume paid must be better.

For most Indian educators teaching a handwriting-heavy subject — mathematics, physics, chemistry, accountancy — OpenBoard is the right default. It is free and open source, it was built for teaching rather than adapted to it, it handles unlimited pages, and critically it lets you import a question paper or textbook page and write over it, which is what solving actually looks like. Its interface is unfashionable and takes an evening to get used to; that is the entire cost.

The row worth pausing on is the last one. Google discontinued Jamboard — both the application and the hardware — and yet it still appears in guides and in teachers' search histories, which means people are building setups on a tool that no longer exists. The broader lesson generalises well beyond this one product: prefer software you can export from. A tool you can export PDFs out of costs you a migration when it shuts down; a tool that locks your boards inside itself costs you your back catalogue. The free recording and whiteboard landscape more broadly is mapped in best free tools for teachers to record lectures.

What Hardware You Actually Need

Hardware deserves a short section rather than a long one, because for online teaching it matters far less than the category's marketing suggests. The full equipment question — camera, microphone, lighting, the whole kit — is worked through in our budget home studio setup for online teaching; here the only question is what you write on.

There are three tiers, and the gap between them is smaller than the price gap implies. A pen tablet — a pad you write on while looking at your monitor — is the entry point, with entry-level options such as the XP-Pen Star G640 and Wacom CTL-472 in the ₹2,500–₹4,500 range. A pen display, where you write directly on a screen, removes the hand-eye separation and costs several times more. An interactive flat panel is a classroom device at classroom prices, and for online teaching it is, as covered above, almost entirely beside the point.

One caution about touchscreen laptops and tablets used with a finger or a cheap stylus. Without proper palm rejection, resting your hand on the surface produces stray marks, and the constant correction is more disruptive to a class than writing slightly awkwardly on a pad. If you are teaching from a tablet, use its purpose-built stylus. If you do not have one, a ₹2,500 pen tablet attached to a laptop will produce cleaner boards than a finger on a touchscreen, every time.

Wiring It for Live — the Delivery Half

You have a board and something to write with; now it has to reach students while you teach. There are two approaches, and the right one is almost always the less impressive of the two.

Direct window sharing means running your whiteboard application and sharing that window through whatever platform hosts your live class. It is simple, it has the lowest latency, there is nothing extra to configure, and it fails rarely. Compositing means running OBS Studio, arranging board and camera and titles into a designed layout, and sending that single feed. It looks more professional and gives you control that sharing cannot — a camera inset so students see your face while you write, for instance — at the cost of setup effort, CPU load, and one more component that can break at 6:58 pm.

On the platform that actually hosts the live session, the practical requirement for a board teacher is narrow: students should be able to join on a phone without friction, attendance should be recorded, and the session should be capturable. The mobile-delivery side of that is covered in how to conduct live classes on mobile apps, and it matters more than the board software does — because a student who cannot join reliably never sees your beautifully calibrated strokes at all.

Turn Every Board Into Sellable Notes

This is the section that most digital-board guides omit entirely, and it is the one with money in it. Consider what happens to your boards today: you write them during class, and then they are erased, closed or forgotten. A teacher taking four classes a week produces something like four hundred boards across an academic session, and almost all of them are thrown away.

Those boards are, materially, the thing students most want after class. Not the recording — recordings are long, and a student looking for one step in one derivation will not scrub through ninety minutes to find it. What they want is the page. The chapter, written in your hand, in the order you taught it, in a form they can scroll on the phone they are already holding. That artifact costs you nothing additional to produce, because you already produced it while teaching. It costs only the discipline of exporting it.

Mechanically this is simple. Set your whiteboard software to export the session — OpenBoard can save a whole session as a PDF document — and make it automatic rather than a thing you remember. Then upload the day's pages into your studio, attached to the batch, so enrolled students get them as part of what they paid for. Over a session this accumulates into a complete chapter-wise handwritten notes set which is genuinely saleable to the next cohort, to students who could not attend, and as a standalone product. How to price and position that is in the best platform for selling PDF notes and test series.

One practical caution, since notes travel further than recordings do. A PDF forwards in one tap, so if these become a paid product, deliver them inside your studio behind a login rather than as files sent on WhatsApp, and consider a watermark carrying the student's name. This does not make sharing impossible — nothing does — but it removes the effortless leak, which is the one that actually costs you. The full picture is in how to protect study material PDFs from sharing.

Five Mistakes That Make a Board Worse Than a Notebook

A digital board is not automatically an upgrade. Used carelessly it is genuinely worse than a teacher writing in a notebook under a phone camera, and the failure modes are consistent enough to list.

Read that list and notice that four of the five are habits, not purchases. This is the pattern across the whole category: educators arrive believing they have an equipment problem and leave having fixed a practice problem. The digital board is a genuinely good tool for teaching mathematics and science online — it is faster than a physical board, it never runs out of space, it produces a saveable artifact, and it lets you write over a question paper. All of those advantages are available at the entry price, and all of them are forfeited by the habits above.

If being on camera is the part you are avoiding rather than the writing, that is worth naming separately, because a digital board is the standard solution to it. A board-only class with your voice over it is a completely legitimate format, and for many subjects students prefer it — the approach is set out in how to teach online without showing your face.

AllCoaching for Board Teachers

The writing surface is yours to choose and free either way. What AllCoaching provides is the third job — the one most teachers skip — plus the business layer around it: the place where the live class is scheduled, the boards are published, the recordings live, and the fees are collected.

The economics matter for a category where teachers have usually just spent money on hardware. Setting up costs nothing and the free base plan does not expire; the platform charges a flat 10% only on what you actually sell through it. A teacher running live batches and giving board notes to enrolled students is using the system free; the share applies only when notes, courses or test series are sold. The optional Pro tier (roughly ₹999–4,999/month) adds a custom domain, advanced analytics and priority support, and nothing described here requires it.

The compounding argument is the one about the four hundred boards. A teacher who publishes them ends a session with a complete handwritten chapter-wise set for their subject — an asset that sells to every cohort afterwards without being taught again. A teacher who erases them starts each September from nothing, having done identical work. Over three years the difference between those two teachers is not effort or skill; it is a single habit and somewhere to put the output.

The Strategic Conclusion

We opened by saying the software matters less than the calibration, and with the full picture in view that holds. The best digital-board stack for an Indian educator is free — OpenBoard to write, direct window sharing to deliver, PDF export to capture — and the money that teachers spend in this category is almost always spent on the wrong layer, buying hardware to fix a problem that lives in pen thickness and lines per screen.

The board teachers whose classes actually work share a short list of habits. They have:

• Calibrated once on a phone, and never touched the stroke settings again.
• Capped themselves at six to eight lines and turned the page instead of erasing.
• Kept live delivery boringly simple, and saved the composited setups for recordings.
• Chosen tools they can export from, so no shutdown takes their back catalogue with it.
• Published every board, ending each session with a chapter-wise notes set instead of an empty folder.

That last habit is the one worth pressing, because it is where a teaching practice becomes a business. India's edtech market is projected to reach ₹2,50,850 crore (US$ 29 billion) by 2030^[1], with the online segment compounding at close to 20% a year^[2] — and the educators who benefit will be the ones whose work accumulates. A class taught and erased is labour; a class taught and published is inventory.

So the next action is two things, both small. Before your next class, join your own session on your phone and fix your stroke weight — four minutes. Then turn on session export, so tonight's board is saved without you thinking about it. Open studio.allcoaching.in, create your batch, and upload the first day's pages. By the end of this session you will have a notes set you did not have to write, made entirely out of teaching you were doing anyway.