Backtesting.py vs Forex Tester (2026)
Backtesting.py (lightweight open-source python library for backtesting single-instrument strategies) and Forex Tester (windows bar-replay simulator for manual forex backtesting, sold as a one-time license) solve backtesting differently. The table below compares them on verified specs and pricing; full details are in each review.
Side by side
| Backtesting.py | Forex Tester | |
|---|---|---|
| Overall score | 7.1 / 10 | 6.8 / 10 |
| Engine type | hybrid | bar-replay |
| Pricing model | open-source | one-time |
| Free tier | Yes | Yes |
| Entry price | $0 | $149 one-time |
| Languages | Python | C++, Delphi, no-code (manual replay) |
| Asset classes | stocks, forex, crypto, futures, any instrument with OHLC(V) candlestick data | forex, crypto, stocks, indices, commodities, metals, ETFs, futures (Online version) |
| Bundled data | None beyond bundled sample datasets (GOOG daily, EURUSD intraday) used in tutorials. You bring your own OHLCV data as pandas DataFrames from yfinance, ccxt, broker APIs, or paid vendors | Free Basic Data covers 18 symbols with medium-quality 1-minute bars and monthly updates. The paid Super Data subscription covers 860+ symbols (131 forex pairs, 569 stocks, 111 indices, 22 commodities, 20 metals, crypto) with real tick data, floating spreads, up to 25 years of history, and daily updates. |
| Finest resolution | Any OHLC bar interval you supply, including sub-minute bars; raw tick or order-book data must be resampled to candles first | tick |
| Live trading | No | No |
| Options support | No | No |
| Open source | Yes | No |
Backtesting.py
Lightweight open-source Python library for backtesting single-instrument strategies
Forex Tester
Windows bar-replay simulator for manual forex backtesting, sold as a one-time license
Frequently asked questions
Is Backtesting.py better than Forex Tester?+
They target different users. Backtesting.py: beginner-to-intermediate python traders who want the fastest path from strategy idea to a credible single-instrument backtest with interactive charts, without paying anything or learning a heavyweight framework. Forex Tester: discretionary forex (and cfd/futures) traders on windows who want realistic manual bar-replay practice and journaling rather than code-driven quantitative research. Our scores: Backtesting.py 7.1/10, Forex Tester 6.8/10.
Which is cheaper, Backtesting.py or Forex Tester?+
Backtesting.py entry pricing: $0 (open-source). Forex Tester: $149 one-time (one-time). See each review for full verified pricing tables.
Educational content only, not investment advice. Specs and prices come from each platform's official pages; see the individual reviews for sources and last-verified dates.