I love Waterdrop & have many bottles, the woodens storage boxes, & just about every flavor but do buy more of my favorites. I drink it multiple times daily. This being said, I purchased the Lucy cap figuring it would make my water tracking even easier. Wrong. It doesn't fit my favorite bamboo metal bottle, first of all, but it says it fits all bottles. For me, Only the glass ones. Second & most importantly, it is simply not consistent. Sometimes it works, mostly it does not. It constantly disconnects. When it reconnects, the consumption is not stored & updated to the app like I'm understanding it should. So I still have to do everything manually. Unless a representative can help me, don't waste your money because it is quite expensive for something you can't trust.