Alpha Charts runs Pine Script, TradingView's language, and checks every backtest on data it never saw. TrendSpider covers more markets, with JavaScript scripting and no-code tools. Here is how to choose.
TrendSpider's column is what trendspider.com says, checked on 16 October 2026.
| ALPHA CHARTS | TRENDSPIDER | |
|---|---|---|
| Strategy language | Pine Script v6, TradingView's language | JavaScript, plus no-code strategy building |
| AI that writes strategies | The Pine Copilot writes Pine v6 from plain words, checks it and backtests it | An AI coding assistant that writes TrendSpider scripts |
| Markets | US stocks and ETFs; NQ, MNQ, ES and MES futures for signed-in accounts | US stocks and ETFs, futures, options, forex, crypto and indexes |
| Every backtest | Runs the script itself, fills at the next bar's open, costs in, and an out-of-sample verdict | A no-code Strategy Tester with built-in or saved scripts and your own entry and exit conditions |
| Also included | Screener for your script, alerts, AI chart analysis, order flow, calendars, the Alpha indicators on TradingView (Pro, Max) | 300+ indicators, pattern recognition, scanning, alerts, trading bots, machine learning (Quant Lab) |
| Free start | Unlimited free backtests on a free account; free tools with no account | A 14-day trial for $1 on the Standard and Premium plans |
| Plans from | $49.99 a month, 30 days money back | Several plans; current prices on trendspider.com/pricing |
The Strategy Tester runs the Pine script itself on real data, not a rewrite of it. Orders fill at the next bar's open, the script never sees future data, and every fill pays 5 bps commission and 2.5 bps slippage per side by default.
Each run is split into an in-sample and an out-of-sample period, stated as dates. The held-out part gets a verdict: survived, decayed, did not survive, or too few trades to judge. Drawdown analytics and the full list of trades come with every run.
The optimiser fits a script's inputs on the past, judges them on data it never saw, and compares the winner against the best of the same number of random tries.
The data and its adjustments, the universe and its survivorship bias, the fill rules and the verdict's thresholds are written out in Data and methodology.
Yes. Paste the Pine Script v6 strategy as TradingView has it and the Strategy Tester runs that script on real market data. Alpha Charts uses its own Pine runtime, so a script can occasionally behave differently than on TradingView.
No. On a plan, the Pine Copilot writes the script from a description in plain words, checks it and backtests it. A free account can paste an existing script and backtest it as often as it likes.
No. It shows whether the strategy held up on data it was not tuned on, which is a better test than the fitted period alone. Live results still depend on the market, the number of trades, the costs you really pay and how often the strategy was re-tuned.
TrendSpider for options, forex and crypto, and for futures beyond NQ and ES. Alpha Charts backtests US stocks and ETFs, plus NQ, MNQ, ES and MES futures for signed-in accounts.
Alpha Charts plans start at $49.99 a month, with 30 days money back, and a free account backtests without limit. TrendSpider lists several plans and a 14-day trial for $1 on its Standard and Premium plans; its current prices are on trendspider.com/pricing.
Sources for TrendSpider: trendspider.com/pricing, trendspider.com/developers and help.trendspider.com, read on 16 October 2026. If anything here has changed, tell us and we will correct it. TrendSpider is a trademark of its owner; Alpha Charts is not affiliated with or endorsed by TrendSpider. Every tool side by side: AI Pine Script tools compared.