All you need to do is purchase a premium combo meal, which includes one of Wendy's premium sandwiches, a side, and a beverage.
There is (naturally) a catch: You have to order through the Wendy's app in order to snag the free kid's meal as part of your purchase. However, the app is free to download and use, all you need to do is input a bit of your personal information to order. And, as People noted, there is no limit to how many times you can access the free kids meal deal between now and September.
This also isn't the only great deal Wendy's has going on right now. The chain is also offering its famed Frosty for just $1 now through Sunday, September 15. As Food & Wine previously reported, there’s also no limit on how many $1 Frosties you can enjoy throughout the next few weeks.