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Understudy Get the app

Learn to invest by rehearsing

Real decisions, practice money, nothing at risk. A practice brokerage where the mistakes are free and every concept is explained the moment it matters.

Download on the App Store Watch the 2-minute demo
Free to start · no sign-up · zero real money at risk
Swipe through the app → Every price simulated
Scared to invest? Rehearse it first. Practice money, your own numbers, real decisions.
Your first trade, before real money. A real order ticket with practice money — and a hint when you need one.
Live through the 2008 crash. Time pauses when the market drops. You decide — with practice money.
Jargon, explained with your numbers. Bid and ask, settlement, slippage — the moment you meet them.
See what each choice actually cost. A plain-English receipt for every practice order.
Start free with Stocks. Real estate, bonds and business when you're ready. Every run is practice money.
How a rehearsal goes

Same decisions, same mechanics, practice money.

1

Open a practice account

An account type, starting cash, a monthly contribution, and a market to learn in: calm, volatile, Replay 2007 or Replay 2020.

Settled · ready $1,000 — the rest settles in three trading days.
2

Place a real-style order

Market, limit, stop, stop-limit. The ticket asks in plain English and grows one field at a time as you learn.

“Buy 1 share of VOO at the market price, good for today only.”
3

Advance time

Nothing happens until you move the clock. A day, a week, a month. Orders fill, cash settles, dividends land.

Filled at the ask. The spread was the only cost.
4

Decide when it matters

An event pauses the clock and says what it means for you. Place an order, sit tight, or find out why. No quiz buttons.

The market just dropped 12%. Nothing was sold, and no loss is real until you sell.
The one rule

Nothing here is real.

And nothing here is advice. Understudy is an educational simulator. It says so on every screen that matters.

  • —No brokerage integration, no bank connection, no real securities.
  • —No money moves. Not one dollar, ever.
  • —No recommendations. It explains; it never tells you what to buy.
  • —Every price is simulated. Bond funds follow the shape of public Treasury history; everything else is generated or fictional.
  • —Your income, savings, and expenses are self-reported and never verified or linked to anything.
Cue is a ghost light: the lamp a theater leaves burning on an empty stage so nobody falls in the dark. It’s here for the same reason.
Free and Premium

Stocks is free. The rest is one plan.

Free

Always
  • The Stocks path, in calm and volatile markets
  • Market and limit orders
  • One practice session at a time
  • Every Stocks concept, explained with your numbers
  • Your Activity dashboard and session history

Premium

7-day free trial on Annual
  • Real estate, business, and bond paths
  • Historical replays: Replay 2007 and Replay 2020
  • Stop and stop-limit orders
  • Advance straight to a date
  • Several sessions running at once
  • The full Outcome Dashboard: key decisions, alternative timelines
$7.99
A WEEK
$49.99
A YEAR
7-day free trial
$99.99
ONCE, LIFETIME

Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period, and are managed in your Apple Account settings. Prices in USD; local prices are shown in the app.

Free to start, on iPhone

Rehearse your first trade tonight.

Download on the App Store Watch the demo