MT4 vs MT5: Which Platform Should You Choose?

MT4 and MT5 use different languages (MQL4 vs MQL5). An EA or copier built for one will not run on the other. If you need both, you need two builds.

MT5 is the usual choice for new multi-asset desks. MT4 still dominates many forex introducing brokers. Your broker's server — not the marketing page — decides what you can attach.

TradeCopierr is a native MT5-to-MT5 copier. We still build MT4-to-MT4 copiers and custom EAs when that is the book you actually run. Hedging vs netting, symbol suffixes, and contract size all have to be mapped — that is brief work, not a checkbox.