Free Slots are virtual slot machines that you can play for free, without wagering any real money. They work similarly to real casino slots, where a player spins the reels in hopes to win the betting line.
Yes, some free slot machine apps offer the chance to win real money. These apps often have in-app purchases or advertisements that generate revenue for the developers, and they might also have a system where you can earn virtual currency or tokens by playing the free slot games.