Know what can go wrong —
before you trade.
Model any Nifty or Bank Nifty options strategy in 60 seconds. See your max loss, breakevens, Greeks, and 49-scenario stress test before you risk a single rupee.
of Indian retail F&O traders lose money — most had no idea what their max loss was before entering the trade.
Source: SEBI study, FY25
Features
Everything you need
before placing a trade.
Four core modules. Each one answers a different question you should be asking before committing capital.
Payoff Chart + Time Slider
See your P&L at every possible spot price. Drag the slider from today to expiry and watch theta work for you — or against you — in real time.
Full Greeks Dashboard
Portfolio-level Delta, Gamma, Theta, and Vega — calculated analytically using Black-Scholes, not approximated. Plus a per-leg breakdown with plain-English explanations.
49-Scenario IV Matrix
A 7×7 stress-test showing P&L across 7 spot moves (−4% to +4%) and 7 IV shifts (−10% to +10%) simultaneously. Essential before trading through RBI policy days or Budget.
Save & Load Trades
Name and save any strategy setup. Reload in one click. Build a personal library of your Iron Condor parameters, strangle widths, and weekly expiry templates.
Custom Multi-Leg Builder
Build any combination of calls and puts with any strikes, premiums, IVs, and lot counts. Not limited to named strategies — model any trade idea you can think of.
Works Completely Offline
One 44KB HTML file. No internet after download. No login, no subscription, no server. Open in any browser on Windows, Mac, or Linux. Loads in under a second.
Strategies
14 strategies, every
type of trade covered.
From basic directional bets to advanced income strategies — all pre-loaded with sensible Nifty defaults.
Bullish · unlimited upside · limited risk
Bearish · profit from falling markets
Mildly bullish · lower cost · capped profit
Mildly bearish · defined risk and reward
Sell put spread for income · bullish bias
Sell call spread for income · bearish bias
Big move either way · buy ATM call + put
Flat market income · sell ATM call + put
Cheaper straddle · needs bigger move
Wide income range · high probability
Range-bound income · fully defined risk · most popular NSE weekly trade
ATM sell with OTM hedges · max income
Sell call against holding · sideways income
Build any multi-leg strategy from scratch
Early Access
Be one of the first traders to use it.
Convexity Pro is newly launched. There are no manufactured reviews here — just a calculator built specifically for NSE traders, priced at ₹999 one-time, with a direct line to the founder if anything isn’t working.
Pricing
Less than the cost of
one bad trade.
One-time purchase. Own it forever. No subscription, no renewal, no login required.
Convexity Pro
- 14 strategies including Iron Condor
- Full Greeks (Δ Θ V Γ) per leg and portfolio
- Payoff chart + time slider (pre-expiry P&L)
- 49-scenario IV stress test matrix
- Save & load trades
- Works offline — one HTML file
- Quick Start Guide (PDF) included
- Free updates for 12 months
Instant download · Windows, Mac & Linux · Any browser · No login required
FAQ
Common questions.
Does it work offline?
Yes, completely. After downloading, everything — the calculator, charts, and Greeks engine — runs locally in your browser. No internet connection needed at all.
What browser do I need?
Any modern browser: Chrome, Safari, Firefox, or Edge. Works on Windows, Mac, and Linux. No plugins or extensions required.
Is the maths accurate?
Yes. All pricing uses the Black-Scholes model — the same formula used by professional traders and institutions worldwide. Greeks are calculated analytically, not approximated. The India repo rate (6.5%) is built into the engine.
What’s the difference from the free calculator?
The free calculator at getconvexity.com has 4 basic strategies and shows payoff at expiry only. Pro has 14 strategies, the time slider (pre-expiry P&L day by day), full Greeks dashboard, 49-scenario IV matrix, and save/load trades.
Does it have live NSE data?
No — it’s a pre-trade modelling tool, not a live data platform. You enter the current spot price and your own premiums. This is what allows it to work offline with no broker account needed.
Can I get a refund?
Due to the digital download nature, all sales are final. But if you have any issue opening or using the file, email getconvexity@gmail.com and it’ll be resolved within a few hours — typically much faster.
Ready to trade with clarity?
Model your next Nifty or Bank Nifty trade before you risk a rupee.
Get Convexity Pro — ₹999 →Or try the free calculator first