FREE pedometer app that plays nice with Apple Watch

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So I was looking for one in the App Store and the first free one I found doesn't pick up steps from my watch. Annoying!

So I tried a different one, it's only free for a week?! then it charges me every week!

MFP won't give me a step readout until I close the exercise episode on my watch, Fine but when I'm trying to get all 10k steps and the phone's count is off kilter it's annoying

Any suggestions? It needs to be free.