Show HN: Heart Rate Zones Plus – The first iOS app I ever developed
https://apps.apple.com/us/app/heart-rate-zones-plus/id6744743232
#ycombinator #Heart_Rate_Zones_Plus #Tobias_Willmann #Health_Fitness #Sports #ios_apps #app #appstore #app_store #iphone #ipad #ipod_touch #itouch #itunes