Comparison
Forex Tester Alternative for Browser-Based Manual Backtesting
Forex Tester is the established manual-backtesting platform, and on data it is comprehensively ahead — roughly 23 years of history, tick-level granularity on its paid tier, and up to 860 symbols. BacktestFlow is newer and narrower. It differs on two things: it measures execution discipline, and it will not let you skip journaling.
Checked against Forex Tester's own documentation, August 2026.Sources.
Side by side
| Feature | Forex Tester | BacktestFlow |
|---|---|---|
| Historical data depth | Roughly 23 years — from May 2003 through July 2026 | Per-instrument history from a declared start date, shorter than that |
| Data granularity | 1-minute data free (Forexite source, Bid, GMT without DST); paid Super Data adds "tick-by-tick data with floating spread" | OHLC candles. No tick data, and no spread modelling at any tier |
| Instrument coverage | Free covers major pairs plus gold and silver; paid Super Data reaches "as many as 860 different symbols" across stocks, indexes, commodities, futures and crypto | Forex only |
| Offline use | The desktop application "works 24/7, no internet connection needed" | Browser-based, so it needs a connection |
| Maturity | A long-established product with a large body of documentation and tutorials | New. Far less written about it, and no track record to point at |
| Rewind during replay | Supported | Not supported. Sessions save your position so you can leave and resume, which is not the same |
| Cost | Free desktop application with free data; paid tiers for deeper data and symbols | Free plan available |
| Installation & platform | Desktop install. Their own blog documents running it on a Mac via Parallels Desktop — i.e. installing Windows first. Forex Tester Online is the browser-based alternative | Browser only. Identical on macOS, Windows and Linux, nothing to install |
| Discipline & behaviour metrics | Not documented in their materials | Checklist adherence, planned vs realized R:R, position-sizing consistency, and the cost of setups you passed on |
| Journaling enforcement | Trades are recorded within the simulation | Replay will not advance past an unjournaled close — the record is complete by construction |
7 of 10 rows go to Forex Tester, marked in the third column. A comparison page that claims total victory is marketing — you should discount it, and this one tells you where to look elsewhere.
Where Forex Tester is genuinely the better tool
- You want the deepest data. Roughly 23 years from May 2003, with tick-by-tick and floating spread on the paid package. We replay OHLC candles over a shorter history and model no spread.
- You trade beyond forex. Their paid data reaches as many as 860 symbols across stocks, indexes, commodities, futures and crypto. We are forex-only.
- You need to work offline. Their desktop application runs without an internet connection. We are browser-based, so we do not.
- You need rewind. Forex Tester supports it. We do not, and that is a straightforward loss on our side.
- You want a proven, mature tool. They have years of documentation, tutorials and users behind them. We are new, and you should weigh that.
Where BacktestFlow is the better tool
It measures execution, not only outcomes
Forex Tester reports what your trades did. What is not in its documented feature set is whether you followed your own process: checklist adherence, planned versus realized risk-to-reward, position-sizing consistency, and what the setups you skipped cost you. Those are the numbers that separate a broken strategy from a broken execution of a good one — seewhy your backtest doesn't match your live trading.
Journaling you cannot skip
Replay will not advance while a close is unjournaled. A session physically cannot end with half its trades unrecorded — which is the usual route toa sample too thin to conclude anything from, no matter how good the underlying data was.
Nothing to install, on any operating system
Forex Tester's desktop application is Windows software, and their own guide for Mac users describes running it through Parallels — installing Windows to run a trading simulator. BacktestFlow opens in a browser tab and behaves the same everywhere.
Analysis that reports its own uncertainty
Deeper data does not make a small sample conclusive. Flow Coach runs significance tests before making any claim, and can only narrate numbers the deterministic engine actually computed — so it will not tell you a pattern is real on the strength of a dozen trades. See the full metric list.
Which should you use?
Choose Forex Tester
You want maximum data fidelity, coverage beyond forex, offline operation, rewind, or the reassurance of an established product.
Choose BacktestFlow
You want zero installation on any operating system, and you care about measuring whether you followed your own process — not just what the equity curve did.
If you already own Forex Tester, nothing here is an argument to abandon it. The honest pitch is narrower: a different set of questions about your own execution, answered in a browser tab.
Frequently asked questions
What is Forex Tester?
Forex Tester is a long-established manual backtesting platform for forex. You replay historical markets and place trades by hand. It offers roughly 23 years of history from May 2003 onward, with 1-minute data free and a paid Super Data package adding tick-by-tick data with floating spread across as many as 860 symbols. There is a desktop application that works offline, and a browser-based version called Forex Tester Online.
Is BacktestFlow better than Forex Tester?
Not on most measures, and it would be dishonest to suggest otherwise. Forex Tester has far deeper data, tick-level granularity, vastly more instruments, offline operation, rewind, and years of maturity. BacktestFlow is newer and narrower. The case for it rests on two things Forex Tester does not document: metrics that measure execution discipline rather than only results, and journaling that cannot be skipped.
Which has better historical data?
Forex Tester, clearly. Roughly 23 years of history, 1-minute bars on the free tier, and tick-by-tick data with floating spread on the paid Super Data package. BacktestFlow replays OHLC candles over a shorter history and does not model spread at all. If data fidelity is your deciding factor, this comparison is already settled.
Does Forex Tester work on Mac?
Their desktop application is Windows software; Forex Tester publishes a guide describing how to run it on a Mac using Parallels Desktop, which means installing Windows first. They also offer Forex Tester Online, a browser-based version. BacktestFlow is browser-only and behaves identically on macOS, Windows and Linux, with nothing to install.
What does BacktestFlow do that Forex Tester does not?
It measures how you executed, not only what you made. Checklist adherence, planned versus realized risk-to-reward, position-sizing consistency, and the cost of setups you chose not to take — none of which appear in Forex Tester's documented feature set. It also refuses to advance the replay past an unjournaled close, so a session cannot end with half its trades unrecorded.
Sources
Every claim about Forex Tester on this page was checked against its own published material in August 2026. We deliberately quote no prices — they change often enough that any figure here would mislead. Check current pricing at the source.
Software changes. If something here is out of date, it is an error rather than a position — tell us and it gets corrected.
BacktestFlow is not affiliated with, endorsed by, or sponsored by Forex Tester. Forex Tester is a trademark of its respective owner. forextester.com blocks automated access, so claims here were verified against their data subdomain and their own blog; check current details at the source.