Model the trade. Then take it.

Rolling out to serious multi‑leg traders first

Build, stress-test and replay multi-leg options strategies before you risk real capital; Carry the same model through the life of the trade.

DeltaForm options modeler showing a multi-leg P/L curve and Greeks
P/L curve Live Greeks Volatility scenarios Time decay

The problem

A payoff diagram only shows one moment.

A multi-leg position changes with price, volatility and time. Understanding the trade means seeing how those forces interact — before entry, as the market moves and after adjustments are made. DeltaForm keeps that complete picture together.

Features

Practice the trade before you risk the capital.

Build

Build the strategy

Choose your strikes, expiries and quantities directly from the options chain. Keep the complete multi-leg position together as you build.

Calendar · SPX · T+0
DEBIT$1,010 MAX PROFIT$2,138
Buy · 7490P · Jul 23 Sell · 7490P · Jul 20 NowAt expiry

Test

Test the assumptions

Move the underlying price, advance time and change implied volatility. See the P/L curve and position Greeks respond together.

IV ScenarioReset
Average IV 0.0%
Leg 2 · 7,565P 0.0%
Leg 3 · 7,680P 0.0%
Time · T+ 0d

Practice

Practice with market history

Return to an earlier market session and step forward through recorded data. Observe how the position changes as market conditions unfold, without putting capital at risk.

Calendar · SPX
EXPIRY13d P/L$0

Manage & Review

Manage and review the full lifecycle

Carry the original model into the live trade, record adjustments and review the complete outcome after closing it.

Why it exists

“I wanted one place where I could build a position, test how it might behave, follow it after entry and replay my decisions afterward. So I built DeltaForm around the complete lifecycle of the trade.”

Aaron · Founder and options trader

Pricing

Start free. Go live when you’re ready.

Free is every symbol on delayed data, with one portfolio and two workspaces. Live adds live market data and unlimited workspaces; Pro adds five years of history and unlimited portfolios.

Yearly billing saves up to 20%

Free

$0

No card · no time limit

Every symbol, on delayed data.

  • Multi-leg strategy builder
  • P/L curves, Greeks & IV scenarios
  • Position tracking & trade history
  • Delayed data, updates every 15 min
  • 2 trading days of history
  • Two workspaces
  • Unlimited portfolios
  • Historical practice, replay and intraday paths
Start free

Pro

$99/mo

Billed yearly · save $240/yr

Everything in Live, plus five years of history.

  • Multi-leg strategy builder
  • P/L curves, Greeks & IV scenarios
  • Position tracking & trade history
  • Live market data
  • Five years of history at 15-minute resolution on 1,000 symbols, and 5-minute resolution from January 2026
  • Unlimited workspaces
  • Unlimited portfolios
  • Historical practice, replay and intraday paths
Get started

The launch video

A word from the founder

FAQ

Questions, answered

How do I get started?

DeltaForm is available now. Create an account in the app and the Free plan opens straight away: every symbol on delayed data, one portfolio and two workspaces. Move to Live when you want live market data, or Pro when you want five years of history.

Can I try it before I pay?

Yes. The Free plan is the Live plan with two differences: market data is delayed, updating every 15 minutes, and you get two workspaces instead of unlimited. Everything else is included — every symbol, the multi-leg builder, P/L curves, Greeks and IV scenarios, one portfolio and 2 trading days of history. No card, no time limit.

DeltaForm runs on licensed financial market data, and every account carries a real per-user cost, so live data is where the paid plans start. Live adds live market data and unlimited workspaces; Pro adds up to five years of 15-minute history on 1,000 symbols, with 5-minute resolution from January 2026, unlimited portfolios and backtesting.

What is the difference between Live and Pro?

Live is designed for understanding and managing active trades. It includes live market data, one portfolio, unlimited workspaces and 2 trading days of history.

Pro is designed for practicing and testing across market history. It includes everything in Live, plus unlimited portfolios, intraday-path analysis and backtesting — currently up to five years of history at 15-minute resolution across 1,000 symbols, with 5-minute resolution from January 2026, expanding over time.

What is historical replay?

Historical replay lets you return to an earlier market session and step through recorded market data. You can observe how the position’s P/L, Greeks and underlying price change as the session develops.

Free and Live include 2 trading days of history. Pro provides access to deeper market history.

How is historical replay different from backtesting?

Historical replay lets you examine or practice a trade through a specific recorded market session.

Backtesting lets Pro users test strategies against longer historical market periods. Replay is about understanding an individual session; backtesting is about evaluating a strategy across a longer history.

Backtesting covers up to five years of 15-minute data on 1,000 symbols — will there be more?

Yes. The archive grows over time — deeper history, finer resolutions, and more symbols.

Every symbol’s history is fetched from the exchange and quality-checked before it ships, and processing that volume of data takes time. We add symbols as they clear that bar rather than publishing data we haven’t verified. Depth and resolution keep growing. Some symbols listed options part-way into the window, so their history is shorter than the full five years.

Why isn’t the previous session’s data available right after the close?

The exchange releases each session’s consolidated options record the following day. As soon as it is published, we load it into DeltaForm — usually before the next US market open.

Does DeltaForm connect to my brokerage or place trades?

No. DeltaForm is an analysis, modeling and trade-management tool. It does not connect to your brokerage or send orders to the market.

You can record entries, adjustments and exits inside DeltaForm while keeping your brokerage account separate.

Which strategies can I model?

DeltaForm is built for multi-leg options strategies, including verticals, iron condors, calendars, ratios and custom combinations with individual control over each leg.

How is my information protected?

DeltaForm does not request or store brokerage credentials because it does not connect to your brokerage account. Your saved strategies, portfolios and trade records remain associated with your DeltaForm account.

Model your next trade.

Start free on every symbol, then go live when you’re ready.

Start free