I will build a workflow for free, because I want to learn and I have a goal to do something beneficial. DM me if you want something done.
In this space, you'll find people offering free systems. And you still won't have a lot of people bite. It's free, so why is nobody jumping on it? Because there is some sort of cost you're not seeing. And I'll share one of those costs with you today.
Back in 2024 I tried hiring a thumbnail artist, and some guy offered to do one for free. I said yes, let's do it. When I did receive the thumbnail I could see right away that this person was not good at all. So I told him that we don't need to move forward here. The issue though is that he wanted to do better and try again. Even though I knew from the first thumbnail that it was a waste of time.
So he kept trying many times, and if I remember right he tried 5 times. I did feel kind of bad about the situation so I figured let's pay him for the work. Dumb mistake number 2. He had no payment processor, so I had to show him how to get one. As you can see, the free here was unpaid time on my end.
There is also the risk of the dev feeling like you owe them because they have invested time. So they might feel like you need to give feedback. Or for more chances. Because they spent their time building this for you. So as you can see, this can get messy fast.
This is one of the reasons why people that have dealt with this before know that free is not free. And in most cases it's easier to pay and vet the person you're hiring.