This & That 12+

Correlations in Health data

Digital Nomad

Designed for iPad

    • 3.7 • 6 Ratings
    • Free
    • Offers In-App Purchases



This & That find correlations in your Health data to help you gain a deeper understanding.

- Finds correlations between almost all Health app data types, including:
- Exercise and activity
- Dietary types (both macro and micro nutrients)
- Body measurements and vital signs
- Tracked symptoms
- Reproductive health
- Meditation and sleep stages
- Environmental sound and headphone exposure
- Daily weather (temperature, humidity, precipitation, etc)

- Calculates and displays statistically appropriate information such as correlation coefficients, confidence intervals, and p-values.

- Calculates cross correlations, lagged correlations for up to 60 days before and after, and also Granger causality.

- Provides correlation analyses in layman's terms to make the statistical data accessible and understandable.

Note: All app functionality requires an active free trial, active subscription, or Lifetime purchase.

What’s New

Version 1.7.0

- Scatter plot points are now coloured by age

Ratings and Reviews

3.7 out of 5
6 Ratings

6 Ratings

EduardoFonseca ,

Great app!

I’ve been using this app for the last 6 months. Amazing value!

Bonn89 ,

Forced subscription for data that’s already on-device!

Wanted to try this out. The app absolutely stonewalls you at the subscription payment screen, forcing you to pick a subscription option before you get to experience ANY features.

This app appears to do data analysis on the data saved locally, on your device, in the Health app. I fail to see the ongoing recurring costs in running an app that doesn’t even appear to need network access. This should have been a one-time payment, instead it feels like a money-grab. No thanks.

Developer Response ,

There is a one time payment option. There's three options in the list - monthly, yearly, or a one time payment.

And the free trial period is there to let you try it before you decide whether to continue with a subscription, so no, there is no "forced subscription".

None of these details are hidden - it's all clearly stated in simple terms. Your angry rant is simply wrong.

The cost is the development of the app. Apps don't just materialise out of magical ether, fully formed, from wishful thinking. They are the result of hours, weeks, months, or years of development, all of which has to be paid for.

In the times before App Stores existed, ongoing development was supported by charging for updates. But when you download an app from the App Store you get updates for free forever. That is why apps have to use the subscription model these days - to ensure continued revenue to support ongoing development. That's the way the market has been structured, by Apple and others, for better or worse. You can't change that by shouting angrily in App Store reviews.

Anyway, considering your attitude, yes, it's best you delete my app and not try again. You are not welcome to try again. Goodbye.

App Privacy

The developer, Digital Nomad, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

More By This Developer

You Might Also Like

Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness