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Trading journalStocks & optionsCanada & the US

The trading journal that reads you back.

Your fills sync on their own. Iris, the AI inside, reads what you wrote and tells you what you keep doing.

Size for zero — size every position so the worst case costs you nothing you can’t afford to lose. The name is the first rule. The journal is the rest.

  • Syncs with Wealthsimple, Questrade, Interactive Brokers and 10 more
  • Unlimited trades and accounts, free forever
  • Built in Canada. PIPEDA and CCPA. Your notes are never sold.
The sizeforzero Today page: net realized profit and loss, the equity curve, core metrics, and this month’s calendar.
The product

The whole journal, in real screens.

Captured from the app. Everything here is on the free plan. Iris always on is the only thing behind Pro.

The Today page: net realized profit and loss, the equity curve, win rate, profit factor, expectancy and max drawdown, with the month and a note from Iris below.
The Today page: net realized profit and loss, the equity curve, win rate, profit factor, expectancy and max drawdown, with the month and a note from Iris below.
The History page: a month calendar with each trading day shaded green or red by its closed profit and loss.
The History page: a month calendar with each trading day shaded green or red by its closed profit and loss.
The Trades page: open and closed positions in one list, with symbol, account, rounds, profit and loss and win rate on each.
The Trades page: open and closed positions in one list, with symbol, account, rounds, profit and loss and win rate on each.
A position page: daily candles with the entry and exit marked, the realized result, the thesis and each fill, and Trade replay.
A position page: daily candles with the entry and exit marked, the realized result, the thesis and each fill, and Trade replay.
The Reflect page: the Sunday letter from Iris, written from the trader’s own notes, with back issues kept below.
The Reflect page: the Sunday letter from Iris, written from the trader’s own notes, with back issues kept below.
The Connections page: a connected Wealthsimple account with its last sync time, and the directory of brokers to add.
The Connections page: a connected Wealthsimple account with its last sync time, and the directory of brokers to add.

Where you stand, on one page.

Net realized, the equity curve, win rate, profit factor, expectancy and drawdown. Below it, how your setups, moods and conviction grades pay, and this month day by day.

How it works

How it works.

  1. Connect your broker, or drop a CSV.

    Sign in on your broker’s own page and the connection stays read-only. Or drag in the file your broker already gives you. Every fill lands once.

  2. Trade, and write one honest sentence.

    Setup, mood, conviction and the note, captured on the trade itself. No separate ritual to keep up.

  3. Read yourself back.

    The numbers stay honest on Today. On Sunday, Iris reads the week in your own words and tells you what you keep doing.

Meet Iris

Hear a letter before you sign up.

Pick a trader and read the kind of letter Iris writes. A sample. Yours is written from your own trades and your own words.

Pick a trader, hear their letter
Sunday letter — sample

The losses this week share a tell — each one came right after a red morning, sized up while the first trade was still stinging. The note you wrote on the worst of them said it plainly: “want it back.”

A sample letter — not generated from real data. Yours is written from your own trades.

Reflections, not advice — a description of your own patterns, never a recommendation to buy or sell.

Want one written from your own trades?

Start free — no card
  • Free

    Reflections

    Two a month on Free, written from your trades. Daily on Pro.

  • Free

    The Sunday letter

    Your week, read back in prose. Once a month on Free, every Sunday on Pro.

  • Pro

    A read on every position

    One short note on each holding you open.

  • Pro

    Patterns noticed

    Revenge trades, scaling into losers, lotto sizing. Ranked by what they cost you.

  • Pro

    Standing order

    The one rule you set yourself, kept in view and checked against what you did.

  • Pro

    Lessons rulebook

    One line per close, so the lesson outlives the trade.

Brokers

Your fills arrive on their own.

13 brokers connect read-only through SnapTrade. You sign in on the broker’s own page, we never see a password, and your fills refresh every day.

  • Wealthsimple
  • Questrade
  • Interactive Brokers
  • Webull
  • Webull Canada
  • Robinhood
  • Schwab
  • E*Trade
  • Fidelity
  • tastytrade
  • Moomoo
  • Public
  • Chase
  • Any broker, by CSV

Any other broker, by CSV.

Drag the file your broker already gives you onto Import & Export. 16 presets map the columns for you, and any CSV with a date, symbol, side, quantity and price works. Every upload is fingerprinted, so a file imported twice adds nothing. Your whole book exports back out whenever you want it.

WealthsimpleQuestradeRBC Direct InvestingWebullInteractive Brokers (Flex)Interactive Brokers (Activity statement)Charles SchwabTD Ameritrade (legacy export)RobinhoodFidelityE*TRADEtastytradeVanguardFirstradeTradeStationTD Direct Investing

North America

Built for Canada. Ready for the US.

Registered accounts as separate books, two currencies in one account, Canadian privacy law, and Pro billed in Canadian dollars. From day one.

The journal for Canadian traders
  • TFSA, RRSP, margin. Separate books.

    One journal account per real account. Every screen reads per book or across all of them.

  • CAD and USD, side by side.

    A US-dollar position inside a Canadian account keeps its own currency. Blended totals show the rate they used.

  • PIPEDA and CCPA. Magic-link sign-in.

    No password to leak. Your notes are never sold and never train a model. They are read only to write your letters.

Just as calm on your phone.

The whole journal, in your pocket. Every screen, every letter, every number.

  • Adds to your home screen and opens like an app
  • Light and dark, matched to your phone
  • Native apps for iPhone and Android are next
The sizeforzero History page on a phone: a month calendar shaded by each day’s closed profit and loss.
On the horizon

Already in the workshop.

Everything above is live today. These four are being built now.

  • The chart you saw, attached to the trade.

    Drop a screenshot on any position, so the setup you were looking at survives next to the note you wrote.

    In the works
  • Spreads as one position.

    Verticals, condors and calendars, tracked as the single trade you meant them to be. The engine already recognises them on import.

    In the works
  • A letter that remembers.

    Iris carrying last month into this one, and telling you, in your own words, how your trading has actually changed.

    In the works
  • Native on iPhone and Android.

    The journal in the App Store and on Google Play, for the fills you close on the move.

    In the works
The difference

What sets it apart.

Other journals point their AI at your numbers. We point ours at your words. And the free plan is the whole journal.

Feature
Other journals
sizeforzero
Unlimited trades on the free plan
No
Yes
A hundred-metric dashboard
Yes
No
The metrics that matter, in the order they matter
No
Yes
AI that reads the notes you wrote, not just the score
No
Yes
AI always on, never metered by credits
No
Yes
Letters kept forever
No
Yes
FAQ

Questions, answered.

Pricing

The journal is free. You pay only to make it talk back every day.

Free — the whole journal

Freeforever

Unlimited trades, every account, broker sync, the full analytics with the equity curve, calendar P&L, CSV in and out. Two Iris reflections and a monthly letter, on the house.

No credit card. Forever.

Pro

US$15/ month

Iris always on. A daily reflection, the Sunday letter every week, a read on every position, patterns noticed, the standing order, the rulebook and the monthly digest. Never metered.

US$150 a year works out to US$12.50 a month. 30-day free trial, cancel anytime.

In Canada, Pro is CA$20 a month or CA$200 a year, billed in Canadian dollars.

Cancel in one click. No retention maze. Read the sample letter Compare every feature