Your trading journal.
Nowhere but your machine.
TradingBook is a trading journal that runs entirely in your browser. No sign-up, no server, no subscription — your trades live in one JSON file, under your control, forever.
Your data. Your device. Nobody else.
Most trading journals are SaaS products with an account and someone else's server. TradingBook takes the opposite approach.
Private by Design
There's no server for your data to go to — TradingBook has no backend at all. Everything happens in your browser, on your device.
No Install
It's a static web page. Just open it — no npm install, no build step, no account to create.
Your File, Your Rules
A portable .json you fully own — back it up, version it, or open it in a text editor. Your call.
Bilingual
A full German/English interface — as its own crawlable language version at / (German), including number and date formatting.
A trading journal, not another Excel template
Plenty of traders start with an Excel or Google Sheets template for their trading journal. It works — until a formula breaks, a cell gets overwritten by accident, or you need a stat the template was never built for.
Excel / Google Sheets
- Build and maintain your own formulas for win rate, profit factor, and more
- One mistyped cell and the whole sheet's stats are wrong
- An equity curve or calendar view means extra charting work
- No automatic leverage or liquidation-price check
- Gets slow and unwieldy after a few thousand trades
TradingBook
- Win rate, profit factor, drawdown, R-multiple — calculated automatically
- Equity curve & P&L calendar built right in, no chart-building
- Automatic warnings for high leverage and risky stop-loss distances
- Stays fast and readable even at tens of thousands of trades
- Just as private & local as your spreadsheet — only already built
Everything a trading journal needs
No feature bloat — just what actually moves the needle for your review.
Dashboard & Statistics
P&L, win rate, profit factor, expectancy, drawdown, an equity curve, and breakdowns by symbol, tag, and weekday.
Risk & Leverage Tools
Track leverage or manual margin per trade, with an approximate liquidation price and automatic warnings when risk runs high.
Monthly Goals
Set a target return per month and track progress with a 24-month history at a glance.
P&L Calendar
A GitHub-style contribution heatmap of your daily results, at a glance.
Fees, Tracked Everywhere
Every number — dashboard, equity curve, drawdown, goals — is net of fees, not just the raw price move.
Undo, Not Confirm Dialogs
Deleting a trade shows a quick undo toast instead of interrupting you with a confirmation dialog.
Looks like a real trading tool
A dark neo-broker design, built for long review sessions.
Fully usable on your phone too
The same app, tuned for your thumb: no pinch-zoom, no sideways scrolling, no compromise on features.
Tab bar & “+” button
Switch between Dashboard, Trades, Statistics and Settings at the bottom — add a trade with one tap.
Trade cards, not a table
Symbol, result, liquidation price and tags at a glance; filters and sorting in a bottom sheet.
Full-screen trade form
Numeric keypad for prices and quantities, tags via Enter or comma, big touch targets.
Your file, on your phone too
Save through the share sheet, e.g. “Save to Files”, plus automatic backup in the browser. Writing straight to the file only works in desktop Chrome/Edge.
From zero to reviewed, in under a minute
No setup, no onboarding flow — three steps, done.
Open it in your browser
Visit trading-book.de — nothing to install, nothing to configure.
Pick or create a file
Choose an existing .json trade file, or start a new one — right from the file picker.
Your data stays put
Every change is written straight back to that file, on your disk. Nothing is ever sent anywhere else.
Ready to journal your trades — privately?
No account, no catch. Open the app or grab the source.