Most OI analysis tools in India start from the same option chain. What separates them is what they build on top, how fresh the numbers are and what they charge. This guide compares seven OI analysis tools: OIData, Sensibull, Opstra, Quantsapp, NiftyTrader, OI Pulse and NSE’s own option chain, with each one’s price, its strengths and who it suits.

We make OIData, which is first on the list, so read this as an informed but interested view. Every other tool’s price and features come from its own website, read on 23 October 2026, and each one is linked so you can check.

How we compared the OI analysis tools

  • Price, monthly and yearly, as each site listed it.
  • A tier that costs nothing, and what it leaves out.
  • Depth beyond the chain: dealer gamma, the auctions, volatility and expiry-day analytics.
  • Delivery: alerts and daily briefs that reach you.
  • Trading features: strategy builders, backtesting and placing orders. Useful, but a different job from reading open interest.

OI analysis tools at a glance

Tool Monthly Yearly Costs nothing? Best for
OIData ₹1189 ₹10,701 No Reading positioning: dealer gamma, both auctions, alerts
Sensibull ₹800 (Pro); no charge for Zerodha users ₹392 a month, paid yearly Yes, 8 features Building and placing option strategies
Opstra ₹1300 + GST ₹11,000 + GST Yes, 15-minute data Strategy building and backtesting
Quantsapp ₹4000 (PRO) ₹19,999 (PRO) Yes, 30 tools The largest toolkit, with order placing
NiftyTrader ₹899 (NT Prime) ₹5390 (NT Prime) Yes, many tools Option chain data at a low price
OI Pulse ₹1599 + GST (Go Pro) ₹1167 a month + GST (Go Annual) Not listed Scalping with trade picks and mentoring
NSE option chain Nothing Nothing Yes The official chain, nothing on top

What only OIData has among these OI analysis tools

On 23 October 2026, none of the other six OI analysis tools listed any of these:

  • Dealer gamma exposure (GEX). Dealer Positioning for NIFTY, SENSEX and stock options, and the GEX Screener for every F&O stock: the call and put walls, the gamma flip, pin conviction and the hedge ladder, every minute.
  • A closing auction tracker. Closing Auction follows the 15:15 index freeze, the auction print, the futures fair close and the expiry settlement risk. Opening Auction follows the pre-open phase by phase and checks the 09:30 gap fill; NiftyTrader and OI Pulse show pre-open prices, not the auction itself.
  • Dealer levels drawn on price. The Session Chart puts the call and put walls, the pin, the gamma flip and the expected move on minute candles.
  • Expiry-day analytics. Expiry Day shows where the index may pin, how fast the at-the-money straddle decays against its model and the expected-move band.
  • An AI news read. The Dashboard pairs the GIFT NIFTY-implied open with a plain-English AI read of what is moving the market.

Some OIData tools have relatives among the other OI analysis tools: Quantsapp also lists seasonality, unusual option activity, a Market Mood view and alerts; Opstra has a volatility surface and skew; NiftyTrader and OI Pulse have Trending OI. Those are listed under each tool below.

The seven OI analysis tools, one by one

1. OIData

OIData is an open interest analytics terminal sold as one plan, Ultimate: ₹1189 a month, or ₹10,701 a year, which is 12 months for the price of 9. It never tells you what to buy or sell and never places orders. Every tool is in the one plan:

  • Dashboard: the next open implied by GIFT NIFTY and what is moving the market right now, each with an AI news read.
  • Pre-open brief and end-of-day digest: by email or Telegram, at 08:45 before the bell and at 16:15 after the close.
  • Session Chart: minute candles for NIFTY, BANKNIFTY, SENSEX and F&O stocks with the call wall, put wall, pin, gamma flip and expected move drawn on them.
  • Market Mood Index: a transparent 0–100 fear and greed gauge built from FII positioning, India VIX, skew, momentum, breadth and gold demand.
  • Opening Auction: the 09:00–09:15 pre-open for NIFTY and SENSEX, the opening print against the auction, GIFT NIFTY and the 09:30 gap fill.
  • Closing Auction: the 15:15 index freeze, the auction print, the futures fair close and expiry settlement risk.
  • Dealer Positioning: dealer gamma exposure (GEX) by strike for NIFTY, SENSEX and stock options, with the call and put walls, the gamma flip, pin conviction and the hedge ladder, every minute.
  • GEX Screener: every NSE F&O stock ranked by net dealer gamma, with short-gamma names, walls, pin conviction and each name’s intraday gamma trend.
  • Expiry Day: where the index may pin, how fast the at-the-money straddle decays against its model, the expected-move band and max pain drift.
  • Volatility: India VIX against realized volatility, the IV surface, term structure and skew, and the range option prices imply.
  • Option Chain: strike-level call and put open interest, prices and changes for index and stock options, with replay that rewinds any recorded session.
  • Trending OI: open interest momentum across strikes, with OI changes, direction and day high and low breaks.
  • Trending OI Screener: Day Strength and 15-minute Flow for every NSE F&O stock, refreshed every 30 seconds.
  • OI Stats: call and put open interest at every strike side by side, with a time slider that replays the session.
  • Strike History: one strike day by day from listing to expiry, with its premium, open interest and build-up.
  • Futures OI: intraday futures open interest and price, session build-up in lots, basis and cost of carry.
  • Straddles & Strangles: a premium tracker with automatic at-the-money and custom strikes.
  • Options Activity: index option strikes whose 5-minute volume bursts above their run-rate, tagged fresh opening flow or churn.
  • Buildup Screener: long buildup, short buildup, unwinding and short covering across the F&O list, ranked by OI change.
  • FII / DII Activity: FII, DII, Pro and Client positions in the cash market and F&O, daily to yearly.
  • Seasonals: each year’s path from January to December for NIFTY, SENSEX, BANKNIFTY, India VIX and every F&O stock, with up to 10 years of history.
  • Holidays: NSE, BSE and MCX holidays on one calendar.
  • Alerts: up to 20 rules on PCR crosses, OI spikes, max pain shifts, OI walls, gamma flips and GIFT pre-open gaps, sent to Telegram.
  • Tutorials: a short video for every page.

OIData covers NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, SENSEX, BANKEX and about 200 F&O stocks. It runs live through market hours through your own broker connection, and outside market hours every recorded session replays, so the tools are useful on a Sunday too. Several pages also export to CSV.

Best for: traders who read the market themselves and want dealer gamma, both auctions, every F&O stock’s trending OI, mood and volatility, with alerts and briefs delivered.

OIData Session Chart for NIFTY 50 on 3-minute bars: candles with the call wall at 23,200, VWAP at 23,161, the pin at 23,100 and the gamma flip at 23,040 drawn across the session, open-interest bars per strike on the right, shaded opening and closing auction bands, and the read line at the top left
One session, every level on the price. NIFTY 50 on 3-minute bars on a day that closed at 23,063.10, down 1.64%. The call wall (red) sat at 23,200 all afternoon, VWAP (blue) drifted down to 23,161, the pin (amber) moved to 23,100 and the gamma flip (purple dots) walked down to 23,040.60. The bars on the right are open interest per strike for the 29 September expiry. The shaded band on the left is the opening auction (previous close 23,446.80, implied open 23,259.15, opened at 23,221.80, a gap of 225 points); the band on the right is the closing auction, where the index froze at 23,085.60 and the auction printed 23,063.10. The read line says Leans up, agreement 0, and lists why.

2. Sensibull

Sensibull is a trading platform first: a strategy builder with more than 25 ready-made strategies, basket orders, draft portfolios, position analysis and Mindful Trading, plus an option chain, open interest charts, FII DII data, an options screener and an IV chart. Pro was ₹800 a month on a one-month plan, ₹640 a month on six months and ₹392 a month on a year, and Zerodha users pay nothing for Pro. A tier that costs nothing covers 8 features. It does not list dealer gamma, auction trackers, a mood gauge, alerts or seasonals. Best for: building and placing option strategies. Read OIData vs Sensibull.

3. Opstra

Opstra, from Definedge, is strong on strategies and testing: a strategy builder, backtesting on five years of end-of-day data since 2014, an options simulator, a volatility surface and skew, and IV percentiles. Its premium data is one-minute data with open interest every 3 minutes; the Basic tier updates every 15 minutes, and BSE contracts sit on a separate site. Premium was ₹1300 a month + GST, ₹6000 for six months + GST or ₹11,000 a year + GST. Best for: strategy building and backtesting. Read OIData vs Opstra.

4. Quantsapp

Quantsapp is the largest toolkit here, with 107 tools and order placing built in. Its tier that costs nothing has 30 analytics tools. PRO, with seasonality, unusual option activity, a Market Mood view, alerts and backtesting, was ₹4000 a month or ₹19,999 a year; PRO+ was ₹8000 a month or ₹39,999 a year, taxes included. It does not list dealer gamma, auction trackers or an expected-move band. Best for: full-time traders who want everything in one place and can pay for it.

5. NiftyTrader

NiftyTrader is a popular option chain site with many tools that cost nothing: option chains, PCR, live max pain, GIFT Nifty, India VIX, Opening Price Clues and a trending OI scanner. NT Prime was ₹899 a month or ₹5390 a year, and the Combo with its Option Simulator ₹1190 a month or ₹6590 a year, with alerts by app, email and WhatsApp. It does not list dealer gamma, a closing auction tracker, a mood gauge, an IV surface or seasonals. Best for: option chain data at a low price. Read OIData vs NiftyTrader.

6. OI Pulse

OI Pulse, from Options Scalping Private Limited, is built around scalping: Trending OI, OI spurts, Active Strikes OI and IV, straddle charts and TradingView charts, with trade picks, a strategy builder and a simulator on the yearly plans and 1Cliq order placing in the Combo. Go Pro was ₹1599 a month + GST, Go Annual ₹1167 a month + GST for 12 months and Go Annual Combo ₹2167 a month + GST for 12 months. It does not list dealer gamma, auction trackers, a mood gauge, alerts or seasonals. Best for: scalping with trade picks and mentoring. Read OIData vs OI Pulse.

7. NSE’s option chain

The option chain on nseindia.com is the official one and costs nothing. It shows strike-wise open interest, the change in open interest, volume, IV and prices for NSE contracts, and nothing on top: no screeners, no dealer gamma, no alerts. Best for: checking a number at its source, the baseline all the other OI analysis tools build on.

Which of the OI analysis tools should you choose?

  • To build and place strategies: Sensibull, which costs Zerodha users nothing, or Opstra.
  • To backtest: Opstra, Quantsapp or NiftyTrader’s simulator.
  • For the biggest toolkit, at the highest price: Quantsapp.
  • For option chain data at little or no cost: NSE’s chain or NiftyTrader.
  • For trade picks and mentoring: OI Pulse.
  • To read positioning yourself, with dealer gamma, both auctions, the mood gauge, volatility and seasonals, plus alerts and daily briefs, in one plan at ₹1189 a month: OIData.

Frequently asked questions

What is the best OI analysis tool in India?

It depends on the job. For building trades, Sensibull and Opstra; for the widest toolkit, Quantsapp; for low-cost chain data, NiftyTrader and NSE. Among these OI analysis tools, OIData is the one that reads dealer gamma, both auctions and expiry-day decay, in one plan.

Which OI analysis tools cost nothing?

NSE’s option chain costs nothing, and Sensibull, Opstra, Quantsapp and NiftyTrader each have a tier that costs nothing, with fewer tools or slower data. OIData is paid: ₹1189 a month, or ₹10,701 a year.

Do any OI analysis tools in India track the closing auction?

Of the seven OI analysis tools here, only OIData lists a closing auction tracker: Closing Auction follows the 15:15 freeze, the auction print and the expiry settlement risk. The closing auction guide explains why it matters on expiry days.

Which tool shows dealer gamma exposure (GEX) for NIFTY?

Of the seven, only OIData lists it: Dealer Positioning for NIFTY, SENSEX and stock options, and the GEX Screener for every F&O stock. The GEX guide explains what it measures.

Do these tools tell you what to buy or sell?

Sensibull is a SEBI-registered research analyst and offers Easy Options and Expiry Trades, and OI Pulse’s yearly plans include trade picks. OIData never does: it shows data and indicators, never tips, and never places orders.

Where does OIData’s data come from?

Through your own broker connection, live through market hours. Outside market hours, every recorded session replays.

Each head-to-head has its own page: OIData vs OI Pulse, OIData vs Sensibull, OIData vs Opstra and OIData vs NiftyTrader.

Try the OI analysis tool that reads beneath the chain

OIData’s one plan, Ultimate, includes every tool above: ₹1189 a month, or ₹10,701 a year, which is 12 months for the price of 9. That is about ₹57 a trading day. Cancel anytime from your account page; a cancelled plan stays active until the end of the period you paid for. See the plan, or watch the video tutorials to see every page first.