Most "free" EA builders are demos: the strategy tester works, the export button doesn't. Nebula's free tier is the actual engine - and it includes one real deploy to MetaTrader.
What the free tier includes
- The full genetic engine. Breed trading strategies from proven building blocks - no code, no Pine Script, no MQL.
- Honest validation. Every candidate is retested on out-of-sample and blind data it never trained on, with anti-overfit gates and a confidence grade.
- One real deploy. Ship one system to MT4 or MT5 as a compiled Expert Advisor with per-trade risk limits built in. Not a watermarked demo - a running EA on your account.
- No card required. Download, build, test and deploy without entering payment details.
Free vs paid, plainly
Paid tiers add capacity and depth, not honesty: more concurrent deploys, the portfolio engine (Pro and above), prop-firm rule templates and breach simulation (Pro and above), and Mission Control live monitoring at scale. The validation pipeline is identical on every tier - a free-tier system passes the same tests as an Ultimate one. Current tiers and pricing are on the pricing page.
How it compares
We keep written comparisons against the tools people usually shortlist: StrategyQuant, EA Studio and fxDreema - and an honest survey of what free EA builders actually give you.
Start in three steps
- Download Nebula for Windows or macOS.
- Point the engine at a market and let it breed, test and grade candidates.
- Deploy your pick to MT4/MT5 and watch it in Mission Control.
Download free - no card, one real deploy included
Learn the method first
If you want to understand what separates a robust system from a curve-fit one before you build: walk-forward analysis, out-of-sample testing and how to tell if a backtest is lying.