VectorBT vs Forex Tester (2026)
VectorBT (high-speed vectorized python backtesting library with a free core and paid pro tier) 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
| VectorBT | Forex Tester | |
|---|---|---|
| Overall score | 7.8 / 10 | 6.8 / 10 |
| Engine type | vectorized | bar-replay |
| Pricing model | freemium | one-time |
| Free tier | Yes | Yes |
| Entry price | $0 | $149 one-time |
| Languages | Python | C++, Delphi, no-code (manual replay) |
| Asset classes | stocks, ETFs, crypto, forex, futures, any OHLCV/tick time series | forex, crypto, stocks, indices, commodities, metals, ETFs, futures (Online version) |
| Bundled data | None bundled. You bring your own data: the open-source version ships a yfinance wrapper, while PRO adds unified connectors for CCXT exchanges (Binance, Bybit, KuCoin, Bitfinex), Alpaca, Interactive Brokers, Polygon.io, TradingView, Databento, Alpha Vantage, Nasdaq Data Link, plus local CSV/HDF5/Parquet/Feather and ArcticDB/DuckDB/PostgreSQL storage. | 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 | tick | tick |
| Live trading | No | No |
| Options support | No | No |
| Open source | Yes | No |
VectorBT
High-speed vectorized Python backtesting library with a free core and paid PRO tier
Forex Tester
Windows bar-replay simulator for manual forex backtesting, sold as a one-time license
Frequently asked questions
Is VectorBT better than Forex Tester?+
They target different users. VectorBT: python-fluent retail quants who want to screen thousands of strategy variants fast, and who will trade a hard learning curve and diy execution for near-c research speed. 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: VectorBT 7.8/10, Forex Tester 6.8/10.
Which is cheaper, VectorBT or Forex Tester?+
VectorBT entry pricing: $0 (freemium). 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.