is unity "free" really free?

Hello I wanted to install unity free version but I was wondering if you need to pay a yearly service fee or something along those lines because I just wanted to try it out and mess around with it but if I need to pay than no thanks but if I don’t need to pay any thing then please tell me that thanks in advance

Yes it’s really free. And yes, you can use the free version to make games that you then sell on the Apple iTunes Store, Google Play etc. And it’s still free. Until your company earns $100,000 per year, in fact, it’s free.

It is free and there is many many many many many many many options that you can use on unity free, it is fun to mess with but it takes a lill bit of time to get use to it