These two get confused by name, but they do different jobs. PolyMaster (polymasterbot.com) is a non-custodial copy trading bot that places trades for you. PolyMaster.io is an analytics/insights site. Here's how they compare — and which you need.
If you want analysis to do your own thing, an insights site is fine. If you actually want to mirror winning wallets automatically — fast, non-custodial, with risk controls — that's PolyMaster, and it's free to start in 15 languages.