The checklist
Hold any trading terminal — including ours — to these fourteen questions. A broker’s own app answers the first few; a terminal built for active trading should answer all of them.
| Question | Why it matters | QuantumCat |
|---|---|---|
| Works on your existing account? | No new demat, no moving money. | Yes — Zerodha, Dhan, Angel One and Groww, through each broker’s official API. |
| No middleman in the order path? | Fewer hops, fewer parties to trust. | Orders go from your machine to your broker. There is no QuantumCat server in the trade path. |
| Credentials stay with you? | Your keys are your account. | API keys in an AES-256-GCM vault on your own machine; broker passwords are typed only on the broker’s own page. |
| Shows the fill for your size? | The top of the book misleads on size, especially on illiquid strikes. | Fill preview walks the depth ladder for your exact quantity. |
| Sizes from risk? | Position size is the biggest risk decision you make. | Type the rupees at risk and the stop distance; the ticket computes the lots — one keystroke to place. |
| Stops survive your laptop? | App-only stops die with the app. | OCO, break-even and trailing stops as broker-side standing triggers where supported, verified by read-back. |
| One switch to get flat? | Panic is not a plan. | A kill switch that stops bots, cancels orders, sweeps GTTs and squares off across every logged-in broker — then confirms flat. |
| Option analytics you can trust? | Greeks that disagree with the premiums beside them are worse than none. | Chain greeks from the chain’s own IV with Black-76; a strategy lab with expiry and T+0 payoff and margin with hedge offsets. |
| An honest backtester? | Flattering backtests cost real money. | Closed candles, next-bar fills, stops first and Indian charges on every trade — and a refusal when the data can’t be reproduced. |
| Bots you can inspect? | “Why did it do that?” needs an answer. | Paper mode by default, reconciliation with the broker every cycle, and a per-bot X-ray of every decision. |
| Replay and your own data? | Practice and post-mortems need the real tape. | Every tick it streams recorded to your own disk; replay any recorded day at 1× to 300×. |
| Discipline enforced? | Rules you can override on a bad day aren’t rules. | Daily loss and order caps and your own circuit breakers, enforced in the order engine — never blocking an exit. |
| Research built in? | Fundamentals shouldn’t need a second subscription. | The Company Report from NSE’s own filings — scored pillars, red flags with evidence, a reverse DCF — and rule-based Investing lists. |
| An assistant that acts, safely? | Speed without giving up control. | JARVIS operates the terminal through audited tools, stages orders for your confirmation by default and has no path to your keys. |
What Indian traders stitch together today
Without a real terminal, an active trader juggles a broker’s app for orders, a charting site for analysis, an options-analytics site for payoffs, a cloud platform for automation and a spreadsheet for the journal — each with its own login and its own version of the truth.
QuantumCat puts those jobs in one desktop terminal on your own account: TradingView’s chart library on your broker’s own ticks, the option chain and strategy lab, the screener, bots and backtester, replay, research and the journal — all sharing one engine, so a number means the same thing everywhere.
Who QuantumCat is for
- Active intraday and F&O traders who want fill preview, risk-sized one-keystroke orders, broker-side stops and a kill switch.
- Options traders who want greeks they can trust, a strategy lab with margin, and a quote radar for option prices that stop adding up.
- Systematic traders who want to build, backtest, paper-trade and run bots without writing code or renting a cloud server.
- Swing traders and investors who want SwingPulse, the Company Report and rule-based Investing lists beside their charts.
- Traders with more than one broker account, each position pinned to the account that holds it.
When QuantumCat is not the right choice
- You trade only from your phone. QuantumCat is a desktop terminal for macOS and Windows.
- You want someone to tell you what to buy. QuantumCat gives you tools and evidence, never tips. For advice, use a SEBI-registered investment adviser.
- Your broker isn’t supported yet. Today: Zerodha, Dhan, Angel One and Groww. Upstox and Fyers are next.
- You trade markets outside India. QuantumCat is built for NSE, BSE and MCX.
Try it on your own account
- Download QuantumCat free for macOS or Windows — every feature, nothing gated.
- Connect your broker with the setup guide; it takes a few minutes.
- Start with paper-mode bots and replay — nothing touches real money until you decide it should.
Questions
What is the best trading terminal for Zerodha?
QuantumCat runs on your own Zerodha account through the official Kite Connect API and adds what Kite doesn’t: fill preview for your size, risk-sized one-keystroke orders, broker-side GTT protection verified by read-back, automated daily Kite login, bots, an honest backtester, replay and Pulse order-flow detection. See QuantumCat for Zerodha.
What is the best trading software for options traders in India?
Look for greeks computed from the chain’s own IV, OI change from the previous close, a strategy lab with payoff and margin, and fill preview on illiquid strikes. QuantumCat has all of them, plus a quote radar that flags option prices that cannot all be right at once, priced net of Indian charges.
Is there a desktop trading terminal for Dhan, Angel One or Groww?
Yes. QuantumCat is a desktop terminal for macOS and Windows that runs on Dhan, Angel One, Groww and Zerodha accounts through each broker’s official API — see the pages for Dhan, Angel One and Groww.
Is QuantumCat free?
Yes, today: every feature is free on the founder plan. A simple monthly plan will follow, and everyone who joins before it launches keeps founder pricing, forever.
Does QuantumCat work on Linux or on a phone?
No. QuantumCat is a desktop terminal for macOS (Apple Silicon and Intel) and Windows.
Education, not investment advice. QuantumCat is software, not a SEBI-registered investment adviser or research analyst, and nothing on this page is a recommendation to buy or sell any security. Figures from SEBI and the brokers are linked to their sources; broker prices and plans change, so check each broker's own page.