What Is MT4 and MT5 Explained: Key Differences, Uses, and How They Work

If you've spent any time looking at online trading platforms, you've almost certainly come across MetaTrader 4 and MetaTrader 5. They're the two most widely used trading platforms in the world, but they're also frequently confused with one another. Walk into any trading forum or Reddit thread, and you'll see the same question asked over and over: Should I use MT4 or MT5? What's the actual difference? Isn't MT5 just a newer version of MT4?

The short answer is no—they're different platforms built for different purposes, though they share a common lineage. And understanding what each one does, and how they differ, is the first step toward using them effectively, whether you're a complete beginner or a seasoned trader. Let's break it down.

What Is MetaTrader 4 (MT4)?

MT4 was released in 2005 by MetaQuotes Software and quickly became the industry standard for forex trading. It was designed specifically for retail forex traders, and its simplicity, stability, and easy-to-use interface made it a massive success. Even today, after MT5's release, MT4 remains one of the most installed trading platforms globally.

At its core, MT4 is a trading terminal that connects you to a broker, allowing you to view live price charts, place trades, set stop-losses and take-profits, and analyse market movements. It uses its own proprietary programming language—MQL4—which lets traders build custom indicators, automated trading systems (Expert Advisors or EAs), and scripts.

Key features of MT4:

• Focus on forex: Built primarily for currency pair trading, though some brokers also offer CFDs on commodities and indices.
• 4 types of pending orders: Buy Limit, Sell Limit, Buy Stop, and Sell Stop.
• 9 timeframes: From 1 minute to 1 month.
• MQL4 language: Simple and effective for building EAs and indicators.
• Single-threaded strategy testing: Backtesting runs on one core, which is slower but adequate for forex-only strategies.
• Market Depth (Level 2): Not available—MT4 was built before depth-of-market data became common for retail traders.

MT4 is still widely supported by hundreds of brokers, and its ecosystem of custom tools and third-party EAs is enormous. Many traders stick with it simply because they've built years of custom work around it.

What Is MetaTrader 5 (MT5)?

MT5 was released in 2010 as the intended successor to MT4. However, it wasn't simply "MT4 with more features." MetaQuotes completely rebuilt the platform from the ground up, with a different architecture and a broader focus.

While MT4 was designed almost exclusively for forex, MT5 is a multi-asset platform. It supports not only forex but also stocks, commodities, futures, options, and cryptocurrencies—depending on what your broker offers. It's a more powerful, faster, and more modern platform, but it's also more complex.

Key features of MT5:

• Multi-asset support: Trade forex, stocks, commodities, futures, ETFs, and more.
• 6 types of pending orders: Adds Buy Stop Limit and Sell Stop Limit to MT4's 4 order types.
• 21 timeframes: More granular analysis with 1-minute up to 1-month charts, plus 2-minute, 3-minute, and others.
• MQL5 language: More powerful and object-oriented, but not backward-compatible with MQL4.
• Multi-threaded strategy testing: Backtesting uses all available CPU cores, making it significantly faster.
• Market Depth (Level 2): Native support for seeing bid/ask volumes at different price levels.
• Built-in economic calendar: Directly within the platform.
• Depth of Market and Time & Sales: Available for exchange-traded instruments.
• Hedging vs Netting: MT5 originally only supported netting (one position per symbol), but newer versions support both hedging and netting, depending on broker settings.

MT4 vs MT5: The Core Differences

The table below captures the most important differences at a glance:

The most common misunderstanding is that MT5 is just an upgrade. It's not—it's a different platform that requires new tools, new EAs, and often a new broker relationship. And because MQL4 code won't run on MT5, traders who have spent years building automated systems on MT4 face a significant migration effort.

Why Both Platforms Still Exist

Given that MT5 is objectively more powerful in many ways, why does MT4 still dominate? The answer comes down to two things: ecosystem inertia and simplicity.

MT4 has an enormous library of third-party indicators, EAs, and scripts. Many traders rely on these tools as the backbone of their trading strategies. They also know the interface inside out—it's familiar, stable, and does what they need. For pure forex trading, MT4 is still exceptionally good, and the extra features in MT5 aren't always necessary.

On the other side, MT5 is the choice for traders who want access to more markets, faster backtesting, deeper market analysis, and a more modern platform. Institutional traders, futures traders, and those who trade stocks or ETFs alongside forex naturally gravitate toward MT5.

How They Work in Practice

Both MT4 and MT5 are client-server platforms. You install the desktop application on your Windows computer, connect to your broker's server, and all your trading data—price feeds, order history, account balance—streams into the terminal. Trades are executed either on your broker's server or, for some advanced strategies, directly on the exchange (with MT5).

The platforms themselves don't hold your funds or take the other side of your trades. They're simply the interface that communicates with your broker. Your broker provides the liquidity, execution, and account management.

One critical thing both platforms have in common: all data is local. Your price feeds, positions, and account information live on your machine. The platform reads from your broker's server, but the data itself resides in your terminal's local files. This matters more than most traders realise—especially for privacy and speed.

The Real-World Frustration: Terminal Overload

Now, here's where the user experience can get frustrating. Both MT4 and MT5 are designed as full-featured desktop terminals. That's great when you're actively analysing charts or placing trades. But what about the rest of the time?

Many traders keep MT4 or MT5 open all day, parked in the background, just to check prices, monitor open positions, or occasionally close a trade. But because it's a full desktop application, it takes up screen space, clutters the taskbar, and appears in Alt+Tab switching. It's always there—visible, demanding attention.

This creates an odd scenario: you want the data, but you don't always want the terminal. You might be working on something else, sharing your screen in a meeting, or simply prefer a cleaner desktop environment. And yet, if you close the terminal, you lose the ability to check your positions quickly.

This is where the distinction between the terminal and the data becomes important.

A Smarter Way to Access MT4/MT5 Data

Imagine you could keep your MT4 or MT5 running, but instead of the full window, you accessed your key information from a single icon in your system tray. Hover over that icon, and you instantly see live quotes for your favourite symbols. Click into a small floating window, and you see all your open positions—symbol, direction, size, open price, and current profit or loss. And if you need to close a position? A single click, followed by a confirmation, gets it done.

This isn't just about convenience. For many traders, it's about maintaining focus, privacy, and desktop organisation. You don't need the full charting suite when all you want is to check the current status of your account. And you definitely don't need to broadcast your trading activity to anyone passing by your desk or joining a screen-shared session.

Where Camovia Tray Fits In

This is precisely where Camovia Tray enters the picture. It's a companion tool that turns your MT5 or MT4 into a tray-based application—meaning you can access live quotes and manage your positions entirely from the system tray, without ever opening the main terminal window.

Here's what it does in practical terms:

• Hover to check prices: Mouse over the tray icon, and a small popup shows live prices for your chosen symbols. That's it—no window to open, no charts to load.
• View and manage positions: A floating order panel displays all your open trades: symbol, direction (buy/sell), lot size, open price, and current profit/loss. Click any position card to initiate a close—with a two-step confirmation so you don't accidentally close a trade.
• Hide the terminal completely: With one click, you can hide the MT4/MT5 main window from both the taskbar and the Alt+Tab switcher. It's still running and receiving data, but it's completely out of sight. Restore it from the tray menu when you need the full interface.
• Tray icon camouflage: The tray icon can be disguised as something ordinary—a cloud drive, a system utility—so it doesn't attract attention.
• Privacy lock: One tap locks the tray functionality entirely, protecting your data if you step away from your computer.

All of this runs entirely on your local machine. No data is uploaded anywhere—it's simply reading the local files generated by your MT4 or MT5 terminal and presenting them more accessibly.

Why This Matters for Everyday Use

If you're a forex or multi-asset trader, you likely check your positions multiple times a day—sometimes dozens of times. Each time you open the full terminal, wait for it to refresh, and scan through your positions, there's a small cognitive cost. It pulls you out of whatever else you're doing.

Camovia Tray eliminates that friction. You check your data without context-switching. You close a trade without opening the full platform. You keep your terminal running in the background, doing its job, while you work in other applications.

And perhaps more importantly, you control exactly when and how your trading activity is visible. In a shared workspace or during a screen share, that matters more than many traders initially realise.

Which Platform Should You Use?

The choice between MT4 and MT5 ultimately comes down to what you trade and what tools you rely on.

• Choose MT4 if: You primarily trade forex, you already have established EAs or indicators built in MQL4, or you prefer a simpler, more straightforward interface.
• Choose MT5 if: You trade multiple asset classes (stocks, futures, ETFs), you need faster backtesting, or you want access to depth-of-market data.

Both platforms are excellent. They're reliable, widely supported, and mature. The key is using them on your own terms—getting the data you need without being tethered to the full terminal interface.

A Note on MT4 and MT5 Compatibility

It's worth mentioning that MT4 and MT5 are not interchangeable when it comes to tools. If you rely on a specific Expert Advisor that was coded in MQL4, it simply won't run on MT5. Some brokers support both platforms, but many specialise in one or the other. Always check with your broker before deciding.

Camovia Tray works with both MT5 and MT4. For MT5, it connects directly through the platform's built-in API—no additional setup is required. For MT4, it uses a lightweight bridge EA (CamoviaBridge) that needs to be attached once; the setup takes about 30 seconds and then you're good to go. Switching between platforms is handled through the settings, and the tool automatically clears the previous terminal's data when you switch.

The Takeaway

MT4 and MT5 are not competing products in the traditional sense—they're different tools for different trading styles. MT4 remains the king of retail forex, while MT5 is steadily gaining ground among multi-asset and institutional traders. Neither is "better" in absolute terms; they're suited to different needs.

But no matter which you choose, the core user experience remains similar: you're running a powerful, full-featured terminal that gives you complete control over your trading. And with the right companion tools, you can enjoy all that power without the terminal dominating your desktop.

The goal is simple: get the information you need, take the actions you want, and keep your trading environment organised and private—all on your own terms.