good day @rok-sivante
I am agree with you metatrader is free and awesome trading software, because its supported by their community thats continuosly developed something new to make metatrader even better , like indicator, trading bot etc.
Crypto currency trading platform ussually web based platform, i like them because its easy to use and user friendly, but unlike metatrader member can not contribute to developed that trading platform, only web owner thats have access and ability to developed their own trading platform