Heart rate tracking is extra
Response from developer
Hi Poop Deck74, as you know the app is free to download and use, this includes the heart rate graph as well as all the other graphs. These are all totally accessible without a subscription. A subscription is only required for extended features such as zooming and setting custom timeframes. So it's unclear to me how this is a "bait and switch"? It's pretty unfair to give it a 1-star rating just because you don't want to purchase a subscription for the extended graph features. Please contact support if you have additional questions.