An option analytics app for NSE F&O: what TBTflow shows, what it costs, and what it refuses to do

People search for the best option analytics app in India and get a list of ten apps described in the same adjectives. This page answers a narrower question honestly: what TBTflow shows for NSE F&O, at what resolution, what it costs, what it deliberately does not do, and who should not buy it. Every claim links to a page where the data is visible.

What it shows

The tape, not a summary of it. Every trade print and the top five levels of the order book, live, for 213 NSE F&O stocks, their stock futures, and the NIFTY and SENSEX futures. From that: futures order flow in rupees, cash flow with block prints attributed and removed, sweeps through the asks and bids, and a per-stock card that says what the book and the flow did today. The data spec lists every source and retention period.

The option structure, rebuilt every 30 seconds. Option Walls / Gamma Blast: the pin, the walls, the craters, the resting depth on each side of the pin, and every large option print with its aggressor side. The guide explains each reading; the detector page publishes the machine's full record including its misses.

Open interest as flow, not as a snapshot. Long and short build-ups per stock from the day's own open, OI walls and zones on the index, futures basis, and a BTST read graded against what happened next.

Breadth and movers at real one-minute resolution. Day, 15-minute, 5-minute, 3-minute and 1-minute gainers and losers from the live feed, not from a delayed scanner.

Free, without a card: 17 price and volume scans, live, behind an email sign-in. And the expiry recaps, free to everyone: what the at-the-money option did in the last 30 minutes of every NIFTY and SENSEX expiry, written from tick data the same evening.

What it costs

₹499 for a week, ₹999 for a month, or ₹2,399 for three months, each paid once with GST included. No autopay, no broker tie-in, no execution, no commission on anything. The price page is at /subscribe.

What it deliberately does not do

It does not give buy or sell calls, targets or stop losses. It is not registered with SEBI as an adviser or research analyst and does not pretend to be one; the vocabulary on every panel is "data shows". It has no strategy builder and no payoff diagrams, which the option-strategy apps do well. It does not place orders. It does not backtest your idea; it publishes its own studies, pre-registered with a decision date, and lists the ones that failed so they are not rebuilt. It does not show a reading it cannot grade: a new measure runs in shadow for about 46 sessions before it is called anything.

Who should not buy it

Anyone who wants a strategy builder, anyone who wants to be told what to do, and anyone who trades from a five-minute chart and does not look at the book. TBTflow is for the trader who wants to see who is doing what on the tape, right now, and decide alone. That is a smaller group than "everyone who trades options", and the product is built for them.

How to judge any option analytics app, including this one

Ask four questions and expect numbers. At what resolution is the option chain refreshed, and is the gap shown when the exchange rate-limits it? Does the app show order-book depth, and for how many instruments? Does it publish the record of its own readings, including the misses? And does it use the word "signal"? TBTflow's answers: every ten seconds with holes drawn as holes; five levels for about 420 instruments; yes, on the detector page and the recaps; and no.