Backtest by hand.
Or the agent builds it.
Tick-by-tick replay you drive yourself, or a strategy the agent writes and runs, on the same data and in the same order list.


Tick-by-tick replay you drive yourself, or a strategy the agent writes and runs, on the same data and in the same order list.


Forex, stocks, crypto, commodities, indices, ETFs and bonds, from tick history to monthly charts.
Tick history with L1 bid and ask, so entries and exits fill at the price that actually existed at that moment.


Upload an OHLCV or tick CSV and backtest it like any listed symbol. Files are parsed in your browser.
Built for the way a replay actually moves.
Name a market and a rule in plain language. The agent writes the strategy or the custom indicator, runs the backtest and explains what it did.
Strategies and indicators export as scripts, so the idea does not stay locked in the browser.
An AI backtest arrives as an order list. Open it on the chart and keep going by hand while the replay runs: add entries, close early, let one run.
AI runs the session
Orders land in the list
You take over on the chart
Every session closes with a full report: trade statistics, a performance calendar, Monte Carlo simulation and an AI read of what the numbers say.

Tomorrow's trades,
today.
Start Tradebreath for free with access to core features and limited usage quotas, perfect for exploring what's on offer. Or, unlock more power with a paid plan.
I test strategies for many different assets. Tradebreath does grouped backtests better and faster than anything else I've tried.
Frank Cole
Portfolio manager
Love the calendar on dashboard, I can clearly see my progress. Confidence builds up one day at a time.
A viewer from chat recommended Tradebreath to me, and I must say, it’s a game-changer! The platform is incredibly user-friendly, and the backtesting results are impressively accurate. I’m thrilled to have discovered this tool!
Hugo García
Full-time trader
Tradebreath is solid, and they have a decent range of currency pairs.
A decade ago, when I was actively trading, I often wished for a reliable backtesting platform but none existed. Then this year, Tradebreath came to my attention through several recommendations. After putting it to use, I immediately knew this was the tool I had been waiting for all along. Excellent work.
Marco Esposito
Financial writer
Finally! the results are in. I hereby declare Tradebreath the KING of backtesting tools. Try it yourself and see if I'm right. And the best part? No registration just log in. Love it.
I really like Tradebreath's clean interface. I also appreciate that spreads and commissions are applied at the same time, it shows they pay attention to details. Overall, this is the best manual backtesting software I have ever used.
Alex
Quantitative trader
For a beginner, Tradebreath is exactly the kind of trading simulator you need. Without it, I can’t imagine how many mistakes I’d have made.
Brandon Jaffe
Freelancer
Tradebreath saved me from so many costly mistakes, this is my best bet before live trading. Thanks!
Tradebreath is a web-based manual backtesting platform designed to help traders improve their trading sense and skills by simulating trading across different markets. No registration required, no credit card needed, it's freemium. The core product is free forever, and you only pay if you want extra features.
We cover forex, stocks, crypto, commodities, ETFs, indices, and bonds. That's over 800 tradable assets and growing. On the timeframe side, we go from tick data right up to monthly charts. Whatever you trade, Tradebreath keeps growing to support it
To get started with Tradebreath, easily log in with your email or Google account on our website. Then you can start exploring the platform and its features. We also recommend checking out our tutorials to help you get the most out of Tradebreath. We will keep updating tutorial videos and are currently preparing a user manual for you.
We update Tradebreath's data daily to keep your backtests relevant and accurate. Asset prices, historical data, and market feeds are refreshed each day for users, New assets and indicators are added regularly based on user feedback and market trends, ensuring you've got the latest tools to trade confidently.
You might already know TradingView's Bar Replay feature. There's also FXReplay, Forex Tester, and TradeZella. They all offer similar replay or backtesting tools. We think Tradebreath brings something fresh to the table, but those are the main names people compare us to.
We'd love to hear your thoughts! Share your feedback, suggestions, or feature requests via email at support@tradebreath.com. your input helps us keep Tradebreath growing and improving.