StrategyTune Review: Free Tick-Replay in the Browser

What It Is

A web app for manual backtesting: pick an instrument, pick a date, and the market replays tick by tick with the future hidden. You place market/limit/stop orders with stop-loss and take-profit; fills happen against the recorded bid/ask quotes; account stats accumulate as you trade. It runs in the browser with nothing to install and no registration required to begin.

What It Does Well

• Real bid/ask tick replay. Fills respect ask-side entries and bid-side stops, and spread is in the data — including its widening at news and rollover. That makes a StrategyTune backtest net-of-spread by construction, which most tools can’t claim.
• No setup friction. No download, no data pipeline, no account to start. The single lowest barrier from “I should backtest” to backtesting.
• 70+ instruments across forex, indices, metals, energy, US stocks and crypto — exact per-instrument data ranges in the live catalog.
• Speed range 1×–50,000× with timeline scrubbing, so reaching 100–200 trades takes sessions, not months.
• Built-in trade simulation & stats — P&L, win/loss, expectancy, streaks computed automatically; orders with TP/SL behave realistically.
• Jump backward to re-examine or undo a setup — useful for studying a moment closely.

What It Deliberately Doesn’t Do

In keeping with this site’s disclosure standard, the honest limits:

• No swap/overnight financing modeling. Multi-day backtests must add swap manually via a journal column.
• No commission modeling. Add commission per round trip if your account type charges it.
• No slippage beyond spread, no partial fills. Apply a pessimistic slippage buffer and gap-fill rules yourself.
• Saved sessions require sign-in. Anonymous use covers backtesting and trading; persistence across devices needs an account.
• One data source per instrument. For feed-sensitive scalping research, validate against your live broker’s data too.

None of these are unique failings — no mainstream replay tool models swap or commission — but they’re real, and your cost audit must fill the gaps.

Who It Fits

You are…	Fit
A discretionary CFD/forex trader wanting realistic, zero-setup practice	Excellent
Building a trade sample fast	Excellent (speed range)
Prepping for a prop-firm challenge	Strong (real fills; you enforce the rules)
Needing futures Level II / order-flow replay	Look at NinjaTrader instead
Wanting the tool to compute swap/commission for you	No tool does; budget for manual costs
Needing offline desktop software	It’s browser-only

Bottom Line

For the common case — a discretionary forex/CFD trader who wants honest, low-friction manual backtesting on real tick data without paying or installing anything — StrategyTune is among the strongest options available, and the spread-in-the-data design removes the single most-forgotten cost. Pair it with a cost-audit spreadsheet for swap and commission and you have a genuinely net-of-cost manual backtest for free. Start on EUR/USD, Gold, or Nasdaq 100. Compare against the alternatives in the full tools comparison.

Frequently Asked Questions

Is StrategyTune really free?

Yes for manual backtesting and trading — it runs in the browser with no signup required to start and no session cap. Signing in adds saved sessions and cross-device persistence. By the three-question free test, it qualifies as genuinely free rather than a trial funnel.

Does StrategyTune model trading costs?

Spread, yes — it replays real bid/ask ticks, so the spread (and its widening at news/rollover) is built into every fill. It does not model swap/overnight financing, commission, or slippage beyond spread; those you add manually using your broker's rates, exactly as with every other replay tool.

What instruments and timeframes does it cover?

70+ instruments across forex, indices, metals and energy, US stocks, and crypto, with multiple intraday timeframes. Exact historical depth varies by instrument and is listed in the live securities catalog — check it for the specific market you intend to test before relying on the range.

How does it compare to TradingView for backtesting?

Different tools: TradingView has superior charting but candle-only replay, no built-in trade simulation, and intraday replay behind paid plans. StrategyTune is purpose-built for backtesting — tick-level fills, trade simulation, auto-stats, free — but isn't a general charting platform. For testing specifically, StrategyTune; for charting, TradingView.