Expert Advisors carry out operations in the forex and exchange markets while the trading mobile app runs unattended.
Expert Advisors are the applications behind algorithmic trading — robots that analyse quotes and trade to an algorithm.
An Expert Advisor is the working form of automation in a trading mobile app for operations in the Forex and exchange markets: an application that watches quotes, applies an algorithm and places orders, whether or not anyone is at the screen. In Trade Master 9 they can be bought, rented, ordered, downloaded free, or written from scratch.
Most traders arrive from the ready-made end. The Code Base offers thousands of free applications, the Market holds more than 2500 algorithmic products — every one with a free trial version — and Freelance connects you to programmers who will build to a specification. Trying two or three on a demo account is the quickest way to learn what a robot actually does to an account over a month, as opposed to what a description promises.
The second stage is usually modification rather than replacement. You discover that one parameter matters enormously to how the robot behaves, and one other does nothing at all. At that point you either learn enough MQL5 to adjust it or hand the change to someone who already knows the language, and the platform includes the full development environment for exactly that work.
Running two robots with different logic on one account is another common step, though it needs care: two systems can agree at exactly the wrong moment and double the exposure you intended. The discipline that separates success from expensive lessons is restraint in optimisation. A robot tuned to perfection against past data often performs worse in live markets than a simpler version with fewer moving parts, because the tuning fitted noise rather than behaviour. Test it, run it on demo, then size it small. The neighbouring pages cover algorithmic trading and MQL5 in more detail, while the home page covers the app.
Expert Advisors are the applications behind algorithmic trading — robots that analyse quotes and trade to an algorithm.





Trading robots for Trade Master 9: build your own or choose from thousands of ready-made applications.
The Trade Master 9 system provides the entire development environment to help you create and optimize your own trading robots.
With the high-performance MQL5 programming language, you can create Expert Advisors utilizing heavy calculations for accurate technical analysis and forecasting.
Three short notes on how this works day to day.
Most traders start with a ready-made robot, discover which parameter actually matters to them, and either have it modified through Freelance or learn enough MQL5 to adjust it themselves.
Optimization can be overdone. A robot tuned perfectly to past data often performs worse live than a simpler version, which is why the development environment includes testing rather than just an editor.
This page suits traders moving from manual to automated trading, and developers evaluating the platform before writing for it.
How automation sits inside the Trade Master 9 platform.
Algorithmic trading means automated trading through specialised applications — trading robots, or Expert Advisors — which analyse quotes and trade to an algorithm without the trader present. The platform supplies the full development environment and the MQL5 language for building and optimising them, alongside thousands of ready-made applications for traders who prefer not to code.
TM9 is a software development company and does not provide investment or brokerage services. The platform supplies the trading terminals, analysis tools and automation; your broker holds the funds, sets spreads and leverage, and executes the orders the platform sends. Trading carries a real risk of loss, and signals or robots are tools rather than financial advice.
Algorithmic Trading. MQL5 Programming. Multi-Asset Platform. Or open the Platform Guide for all 20 pages.