No code
ever required
Nebula · genetic strategy engine for MT4 / MT5
Stop hunting for the perfect EA. Breed it.
Nebula evolves trading systems against real market data, proves the survivors on data they have never seen, and runs them in MetaTrader with your rules compiled in.
Free tier runs the full engine
Windows & macOS
Your broker, your machine
Real screenshot: the end-of-run board. Every figure on it was earned in testing, not typed in.
Out-of-sample
proof standard
One click
to MetaTrader
Breed→
Prove→
Grade→
Portfolio→
Deploy→
Manage
Act 01 - Breed
A genetic engine, not a strategy template.
Most EAs are one frozen idea. Nebula starts from a gene pool of proven building blocks - momentum, breakout, Wyckoff, smart-money, order-flow and more - and evolves whole populations of candidate systems against your chosen market and timeframe.
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Each generation, weak candidates die and strong traits recombine. You watch the population improve in real time; the engine does in hours what manual strategy building does in months.
On Ultimate, DNA Selection lets you choose exactly which families the gene pool may draw from - your thesis, evolved.
Real screenshot: DNA Selection - pick the building-block families the engine may breed from.
Real screenshot: the same system, replayed in MetaTrader's own Strategy Tester. What you test is what deploys.
Act 02 - Prove
Only survivors leave the lab.
A backtest that only looks backwards is a story, not evidence. Every Nebula candidate is retested on held-out data it never trained on - out-of-sample windows and a blind window the search cannot touch - and pushed through anti-overfit gates designed to kill lucky curves.
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Survivors carry a confidence grade and their full test record: trade sample, drawdown profile, out-of-sample behaviour. You see the evidence before a system ever touches your money.
And because the strategy compiles to native MQL, Nebula cross-checks its own simulation against MetaTrader's tester - the EA you deploy is the one that was tested.
Act 03 - Grade & collect
Every system carries its evidence with it.
Survivors land in your Vault - a personal library where every system keeps its grade, lineage and full test history. The Confidence Lab digs deeper on demand: stress tests, stability checks, and an honest verdict on how much trust a system has earned.
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Grades never quietly disappear, and nothing is ranked on a backtest alone. When a system's evidence weakens, you see that too.
Real screenshot: the Vault - collections, grades and the evidence behind each one.
Real screenshot: the portfolio engine mixing systems into one book.
Act 04 - Portfolio
A book of systems - not ten bets on one idea.
Single systems have single points of failure. The portfolio engine combines your survivors into one balanced book, weighting for diversification rather than raw backtest numbers - up to 8 legs on Pro, 12 on Ultimate, with automatic formulation on Ultimate.
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The caps aren't marketing tiers - they're where the maths stops being honest. Past ~12 legs, correlation estimates drown in noise, so Nebula refuses to pretend otherwise.
Act 05 - Deploy
One click. A compiled EA on your chart.
Deploy compiles your chosen system to a native MT4 / MT5 Expert Advisor and installs it into your terminal - no copying files, no code editor, no third-party bridge. Your risk settings travel with it: position caps, drawdown limits and news-avoidance windows are compiled into the EA itself.
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Every deploy is recorded with its full lineage - which run bred it, what it scored, what changed - so your live book always traces back to its evidence.
Even the free tier includes one real deploy, forever. The pipeline you learn is the real one, end to end.
Real screenshot: deploy - from graded system to a running EA in your terminal.
Real screenshot: Mission Control - your deployed systems, tracked live against their tested profiles.
Act 06 - Manage
Then it manages the book with you.
Markets drift, and every strategy eventually decays. Mission Control watches each deployed system against the profile it was tested to, and flags the moment live behaviour slips out of band - before the damage compounds.
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Pause, resume or flatten any live system from the app, and set one drawdown ceiling for the whole account - breach it and every system pulls to safety at once. From Starter you can review a like-for-like replacement from your vault - with a fresh micro-retest as proof - and swap it in by hand. On Ultimate, Auto-Refresh Evolution does the whole loop hands-free: detect decay, source a candidate, hot-swap it over the running EA.
Latest update · 9 September 2026
New in Nebula 0.4.47
0.4.47 adds Autonomous mode (beta, Ultimate): set a goal and a time budget and Nebula searches, tests and grades on its own. Also new: The Nebula, one page showing which of your systems cover each other's bad days; alerts that stop repeating once dismissed; a risk stop that confirms it really froze entries; faster forward-data updates; and high-frequency runs returning results again. Nebula updates itself on launch.
Also new since 0.4.45 · all live now
Set the risk before you deploy
A risk-per-trade slider on Deploy, with the best-chance mark taken from your system's real replay.
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Every deploy now starts from the risk the system was actually tested at. Slide it and Nebula restates the outcome from the recorded curve, and marks where the odds were best. A 5% per-trade wall stays in place whatever you pick.
The portfolio risk lever calculates itself
Pick a target and a horizon; reach and breach odds recompute per setting, on one bar each.
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The risk-to-goal ladder on the Portfolio tab reads your book's real ledger and shows, for each risk setting, the chance of reaching the target against the chance of breaching your drawdown limit first. Change either input and the ladder rebuilds.
Forward proof says when legs were missing
A proof that ran on part of a book now reads "N of M legs" instead of a bare survivor count.
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If a portfolio's forward proof could only replay some of its legs, the badge now says so up front, so a partial book is never mistaken for a full one.
Where the edge has been
Your most profitable pair, timeframe and crossover from forward tests, plus the network view.
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Forward analytics now roll up what your own forward tests have proved, side by side with the anonymised Polaris network. Use it to point the next run at the ground that has held up, not the ground that looked good in a backtest.
News protection on every deploy
Each deployed EA stands aside for high-impact news, and the rule sticks when you re-deploy.
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Your current news rule is compiled into every EA at deploy time, including copies Nebula cannot reach, and Mission Control stops asking you to re-deploy a system that already carries it. MT4 EAs now run trade management once per bar, matching MT5 and the simulation.
Faster start, switch accounts in-app
Locks on while MetaTrader is still opening. Point Nebula at another account without a restart.
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Also in this release: Breed From works again, the post-update "Bridge connecting" hang is gone, and automatic swaps only fire where the EA is confirmed on your terminal. Since 0.4.43: 19 languages, an unlimited passed-system archive, the Inspector size lens and your own acceptance rules.
Swipe for more
Telegram remote desk
Run it from your pocket.
Link Telegram in settings and your desk becomes a contact in your phone. Ask in plain English - portfolio status, open positions, risk exposure, run progress, system health, even "how are we doing" - and Nebula replies with the real numbers from your machine.
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Alerts come to you the same way: deploys confirmed, drift flagged, runs finished. Optional machine controls stay locked behind an explicit opt-in and a confirmation step, so a lost phone is never a lost desk.
You - 09:12run status
NebulaOvernight run finished. 412 candidates tested, 9 survivors above your grade floor. Best is queued in the Vault for review.
You - 09:13any open positions?
NebulaOne: XAUUSD long, 0.5% risk, opened 07:41 by "Aurora". All other systems flat.
Illustration of the channel. Replies are generated from your own installation's live data.
Polaris - the hive mind
One engine per member. One memory for all of them.
Opt in to Polaris and your installation joins a shared machine-learning pool: every member's engine contributes anonymised strategy outcomes - what survived live conditions, what decayed - and every member's engine learns from the combined record. It is experience your single account could never accumulate alone.
Strictly opt-in
Off by default. You choose to join, you can see exactly what your machine has contributed, and you can stop any time.
Anonymised outcomes only
The pool carries strategy outcome data - never your account details, broker, balance or identity.
Compounds with the community
Every new member widens what every engine has seen. The Polaris tab shows the network learning in real time.
Prop-firm mode
Designed around the rulebook.
Funded accounts are lost to rule breaches as often as to bad trades. From Pro, Nebula loads firm-style rule sets - daily loss limits, max drawdown, position caps - simulates your candidate against them to find breaches before they happen, and compiles the limits into the deployed EA. News-avoidance windows are baked in on every deploying tier.
HONEST NOTE
These are tools for operating inside a firm's published rules. No software can promise a passed challenge, and we don't. Check your firm's terms permit EA use.
Runs on what you already own.
Your machine
Windows and macOS desktop app. All searching, testing and grading runs locally - your strategies never leave your computer unless you opt in to sharing.
Your MetaTrader
Works with MT4 and MT5 from any broker that offers them. Nebula compiles and installs EAs into your own terminal - no bridge accounts, no copy-trading middleman.
Your data
Tests run on your broker's own price history, pulled through your terminal - so the data you test on is the data you'll trade on.
Real screenshot: Nebula-built EAs sitting in a real MetaTrader terminal's Experts folder.
Plans
Start free. Scale when you're ready.
Every tier runs the identical search engine - same depth, same windows, same gates. Paid tiers unlock what you can do with what it finds.
Nebula reviews on TrustpilotPrivate mentoring reviews on Trustpilot3+ years runningRead every review
Free
The whole engine. One real deploy, forever free.
£0 forever
No card. No trial clock.
Start free - no card
- Full-depth search - identical engine to Ultimate
- One real deploy to MT5 - yours to keep
- Grade & collect systems in the Vault
- Browse the community Genome Bank
- Discord community support
Starter
Your first live EA. Build, validate, deploy.
25% off first month£21.75£29.00
renews at £29.00/mo · cancel anytime
Subscribe monthlyPay once from £79.00
- Everything in Free, plus:
- Real deploys - 1 per day, MT4 & MT5
- Mission Control live monitoring + drift alerts
- Manual swap-out of decayed systems
- Unlimited .mq4/.mq5 source export
Pro
The working tier. Portfolios, prop-firm mode, no caps.
25% off first month£44.25£59.00
renews at £59.00/mo · cancel anytime
Subscribe monthlyPay once from £159.00
- Everything in Starter, plus:
- Unlimited deploys + portfolio books up to 8 systems
- Prop-firm mode - rule templates + breach simulation
- Genome Bank import & publish
- Multi-symbol runs, blacklist tools, Excel reports
Ultimate
Every instrument. Hands-free evolution of your live book.
25% off first month£89.25£119.00
renews at £119.00/mo · cancel anytime
Subscribe monthlyPay once from £329.00
- Everything in Pro, plus:
- Every instrument - unlimited pairs per run
- Auto-Refresh Evolution - decayed systems replaced hands-free
- DNA Selection + 12-leg auto-formulated portfolios
- Unlimited vault, PDF reports, full parity verification
Nebula reviews · verbatim from Trustpilot
“Nebula is unlike anything I’ve ever used or seen. It’s not just a producer of EAs. It builds every one with your input and parameters.”
Finn · on Trustpilot · Aug 2026
“I have certain requirements for my trading strategy and pre-programmed trading robots did not fit me. Nebula allows you to create a custom EA based on your requirements for MetaTrader 4 and 5.”
Johnathan · on Trustpilot · Aug 2026
RISK WARNING
Trading foreign exchange and CFDs carries a high level of risk and can result in losses exceeding your deposit with some brokers. Simulated and past performance are not reliable indicators of future results. Nebula is software - a tool, not financial advice - and no result is guaranteed.
The honest answers
Questions people actually ask.
Will Nebula make me money?
Nobody can promise that, and anyone who does is lying to you. What Nebula does is refuse to show you systems that failed honest testing - out-of-sample windows, blind data, anti-overfit gates - and then watch what you deploy so decay gets flagged early. The risk of trading is always yours.
Do I need to know how to code?
No. You never see or write code. You choose markets, styles and risk in plain controls; Nebula writes, compiles and installs the Expert Advisor itself.
What actually runs on my computer?
Everything. The engine, your strategies, your test data and your vault live on your own machine. Nebula talks to your MetaTrader terminal locally. Only the opt-in Polaris pool and licence checks touch the network.
What's genuinely free?
The full search engine at full depth, grading, the vault, Genome Bank browsing - and one real deploy to MT5, forever. Not a trial: the free tier never expires. Paid tiers add ongoing deploys, monitoring, portfolios and automation.
Can I use it on a prop-firm account?
Many members do, where their firm permits EAs - always check your firm's terms. Pro's prop-firm mode exists to keep a strategy inside firm-style rules, and the breach simulator shows you problems before a live account ever sees them. No tool can promise a pass.
What happens if I cancel?
Monthly plans cancel anytime and simply lapse to the free tier - your vault and your already-exported EAs are yours. One-off licences run to the end of their term.