HealthStats provides in depth look at all the data from the health data you collect with your iPhone or Apple Watch.

It will let you analyse steps, heart rate, weight over time or on a specific days. It will also allow you to review and analyse recorded workouts.

The app is for data geeks that want full access and views on the numbers and statistics.

This app is now open source on GitHub as part of the ConnectStats project, feel free to review the code, give feedback or contribute.


  • Calendar View of your days and workouts
  • Compare your month to month distance in cumulative plots
  • Monthly/Weekly summary statistics of your days and workouts
  • Monthly/Weekly historical report and graphs of your recorded data
  • Scatter plots and trend for both historical or workout data
  • Best Rolling Plots, histograms for workouts
  • Support multiple source, for example data collected by your phone or your watch
  • Calculated laps for your workouts: find your fastest kilometer, or split time, etc
  • Display time in zone for heart rate or pace in your work outs
  • Slice your statistics by workout types: running, biking, etc

Quick Guide

  • When you first start the program, you will need to authorize the app to access your health data and choose the source for your data
  • Data will be refreshed as you pull down the activity list on the first tab or overtime you start the app
  • The Day Detail tab provide a view on a given day or work out
  • The stats tab provide historical report and graphs, tap on the different buttons on the navigation bar or on graph and numbers in the tables to explore further analysis
  • The calendar view provide summary views on the month, explore it by tapping the different configuration buttons


  • All the data is analysed locally on your phone, no data will be sent anywhere.

Recent Posts

Moving weather data from DarkSky to Visual Crossing

ConnectStats history with the weather had a few chapter. First, I started to get the data from the Garmin Website so I could display the condition, the temperature and mostly the wind direction and speed in the map, which is always a good visual clue of how the wind helped or hurt in an activity.

When Garmin stopped publishing its weather data in the API, ConnectStats ended up without the weather for a while. Until Garmin opened its new API which required me to implement my own server, and indirectly made it easier to query the weather to display in an activity.

In March, Apple announced it was purchasing DarkSky and as a consequence it was going to shut down the API access to third party developer by next summer. So it was time to look for a new API. I will move the app to use Visual Crossing.

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