Is Lingo free to use?

Excuse me, I've been looking into various language learning platforms and Lingo caught my eye. Could you clarify whether Lingo is free to use or if there are any costs associated with it? I'm particularly interested in its pricing model and whether it offers a free trial or a limited version before committing to a subscription. Additionally, if there are paid options, what are the key benefits and features that come with them? I'd appreciate your insights on this matter.