Journal

Log a trade in under a minute. Everything else calculates itself.

Dashboard

Where your edge comes from, and where it leaks.

Monthly review

Twenty minutes, once a month. Read the numbers, then answer honestly.

Help

Everything you need to get value from the Error Log, in about five minutes of reading.

Quick start

Set up once. In Settings, choose your account currency and starting balance, set your risk-per-trade rule, and replace the example setups with the plays you actually trade.
Log every trade right after you close it. Search the market, enter entry, stop, exit and size, then tag the one error (or None). It takes under a minute.
Look at the dashboard once a week. Check expectancy, your costliest error and the process-vs-outcome grid.
Do the monthly review. Twenty minutes: read the month's numbers and answer the five questions. Fix one error at a time.
Save a backup every week with File → Save backup, and keep the file somewhere safe such as a cloud folder.

New here? Use File → Open the demo account to explore 60 example trades, or File → Take the guided tour. The demo account is completely separate from your own journal; switch back with File → Back to my journal.

Logging a trade

Market: Type a ticker or company name: over 11,000 US stocks and ETFs, the main futures, forex pairs, crypto and Bucharest-listed stocks are built in. Any other symbol works too; just type it. Markets you trade are remembered with their size, fees and point value.
Entry, stop, exit: Prices as you traded them. The stop is the price where your plan said you were wrong. It defines your risk, so enter the planned stop even if you exited elsewhere.
Size: Shares, contracts, units or coins.
Point value: What one full point of price is worth per unit. Stocks, ETFs, forex and crypto: 1. Futures are filled in automatically (ES 50, NQ 20, CL 1000). For other futures, check your broker's contract specification.
Fees: Total commissions and fees for the round trip, as a positive number.
Followed plan?: Yes only if the trade was a playbook setup, entered and sized as planned, with the planned stop.
Mental state: How you felt when you entered. Over time the dashboard shows which states cost you money.
Note: One sentence: what happened and what you will do next time.

The line under the form previews risk, P&L, R and the verdict before you save, and warns you if the stop is on the wrong side or the trade risks more than your rule. Click any trade in the table to open its details, then Edit trade to change it.

Errors and honesty

Each trade gets one error: the mistake that mattered most, or None for a clean trade. The fourteen built-in errors are grouped into Plan, Risk, Execution and Mindset; rename them or add your own in Settings.

The dashboard is only as useful as this column. A win can still have an error (that is a lucky win), and a loss can be perfectly clean (that is the normal cost of having an edge).

Reading the dashboard

R: Profit or loss divided by what you planned to risk. +2R means you made twice your risk; −1R means you lost exactly what you planned.
Expectancy: Your average R per trade. Above 0 means your way of trading makes money over many trades.
Profit factor: Total gains divided by total losses. Above 1 is profitable.
Max drawdown: The largest drop from a peak in your running P&L.
Equity curve: Your cumulative R. Click an error group (Plan, Risk, Execution, Mindset or All) to see the curve without those trades: the gap is what the errors cost you.
What each error cost: Money lost or made on trades with each error, worst first. Start fixing the top one.
Process vs outcome: Good process means plan followed and no error. Judge yourself on the rows (process), not the columns (luck).
P&L calendar: Daily results for the last three months, so streaks and bad days stand out.

Monthly review

Pick the month at the top right. You get the month's numbers, its costliest error, your best and worst trade with their charts, and five questions. Answers save as you type and appear in the PDF report.

Charts

Attach up to six screenshots per trade: copy a chart (for example with your platform's snapshot button or the Windows Snipping Tool) and press Ctrl+V in the journal, drag image files onto the form, or click Add chart. Click a thumbnail or the camera icon to view full screen; use the arrow keys to move between charts.

Your data and backups

Everything, including charts, is stored in this browser on this computer. Nothing is uploaded and there is no account. This keeps your trading private, but it means:

Clearing your browser data or using a private window deletes the journal.
Opening the file in a different browser or on another computer shows an empty journal.

So: File → Save backup once a week (the app reminds you). The backup is one file that includes your charts. To move computers or browsers, open the app there and use File → Open backup.

Keep the app file itself in a fixed place, for example Documents. Always open it from there: browsers store data per file location.

Export and import

Excel: File → Export to Excel: trades, summary, error costs and the monthly sheet with your review answers.
CSV: Plain trade list for any other tool.
PDF report: File → PDF report opens the print window. Choose "Save as PDF". It contains the dashboard and the selected month's review.
From your broker: File → Import trades from your broker. Choose a CSV or Excel export of your trade history (executions or closed positions). The app matches the columns, shows a preview with the P&L of every trade, and remembers your choices for next time. Buys and sells are paired into complete trades automatically, including partial exits; positions that are still open are left out, and trades you already have are skipped.
After importing: Imported trades are marked To review. Brokers don't know your planned stop, your error or whether you followed your plan, so open each trade and add them. Until then the trades count in your P&L but not in the process statistics.
Spreadsheet: Trades logged in the Error Log spreadsheet (.xlsx) can be imported with File → Import from the Error Log spreadsheet.

Shortcuts

Enter: Save the trade from any field in the form.
↑ ↓ Enter: Choose a market from the search list.
Ctrl+V: Paste a chart into the current trade.
← → Esc: Browse and close the chart viewer.

FAQ

My journal is empty after I opened the app again.

You probably opened it in a different browser, from a different folder, or in a private window. Open it the same way as before. If the data is gone, use File → Open backup.

The P&L of my futures trade looks far too small.

Check the Point value. For ES it must be 50, for NQ 20. Edit the trade and correct it; the market preset updates for next time.

Which export should I use from my broker?

Interactive Brokers: an Activity Statement in CSV format (Reports → Statements → Activity), or a Flex Query with the Trades section. Not the PortfolioAnalyst report, which only has totals per instrument. MetaTrader 5: History tab → right-click → Report → Open XML (Excel). The positions table is read automatically. XTB: Account history → closed positions → export to Excel. Others: any CSV or Excel file with one row per fill or per closed trade works; you match the columns once.

Does it work offline? Is anything sent to the internet?

Yes, it works fully offline, and nothing is sent anywhere. Everything is inside the single file you bought and in your own browser.

Which browsers are supported?

Use a current version of Chrome, Edge or Brave: the app is built and tested for these. Other browsers may restrict storage for files opened from your computer, which can stop charts or data from being saved. In old browsers the market search list may not load; you can still type any symbol.

How do I record a trade I scaled into or out of?

Scaling out: use Partial exits in the journal form and enter each exit with its size. Scaling in: use your average entry with the total size. If the parts were very different decisions, log them as separate trades.

Why does a trade show R as "est."?

R needs a stop. Imported trades often have none, so the app estimates R with your usual risk per trade (1R in Settings): R = P&L ÷ 1R. Add the real stop in File → Quick review and the exact R replaces the estimate. You can switch estimates off in Settings, or show the equity curve in money instead.

How do I log an option trade?

Set Type to Option. Pick the underlying (for example AMD), the expiry (the quick picks give you this Friday, next Friday and the monthly), the strike and Call or Put. The contract name is built for you, for example AMD 20NOV26 250 C, the same format as an Interactive Brokers import. Enter entry, stop and exit as the option premium per share and the size in contracts: the point value of 100 is filled in. The app works offline, so it does not look up option prices.

How does the app suggest a position size?

Enter the entry and the stop. If your 1R is set in Settings (or your balance and risk rule are), the form shows the size that risks exactly 1R. Click it to use it. For futures and forex, check the point value first.

My account is in a different currency from the instrument.

Enter fees and read P&L in the instrument's currency, or convert the result yourself. The app does not convert currencies.

Can I use it on my phone?

Yes, the layout works on phones, but your data stays on the device where you enter it. Pick one main device and use backups to move data.

How do I get rid of the demo trades?

They live in a separate demo account, so they never mix with your journal. Switch back with File → Back to my journal. To start the demo fresh, use Reset demo in the dark bar at the top.

Is this investment advice?

No. The Error Log is an educational tool for reviewing your own decisions. It does not tell you what to buy or sell.

Something unclear or not working? Contact us through the page where you bought the Error Log. Updates to version 1 are free.

Suggest a feature

The next versions are built from what buyers ask for. Tell us what you are missing: this opens an email to us with your answers, and nothing is sent until you press send.

Settings

Your account details and the lists behind the dropdowns. Changes save automatically.