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Interested to see how much energy your body consumes for mental and physical tasks? (*)

The Mindstretch app offers this and also personalised advice on how to manage your energy.

By downloading the app, you will get a 31-day full access to all the app functionality. After this period, you can get a monthly auto-renewable subscription to continue having access to the full app. The cost for the auto-renewable subscription is 3.99 Euros per month for the first two months and then 9.99 Euros per month (these prices may differ slightly depending on your exact location) and will renew automatically at the end of the month. Your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period for the same cost. You can manage your subscription at any time from your User Account Settings. Any unused portion of the free trial period, will be forfeited when you purchase a subscription.

The general terms and conditions can be found at

The privacy policy can be found at

Important: this app works with the Apple Watch (series 3 or higher) and integrates with the HealthKit app. To be able to calculate your personal mental energy use, you need to wear the Apple Watch and measure your heart rate in a continuous way. To be able to do so, we integrate with the HealthKit app and your heart rate data will be automatically stored in the Health app. However, we don't store any additional data in the Health app. Once the Mindstretch app is installed, it will ask you for permission to measure your heart rate and store this information to the HealthKit app. Please provide us with this permission to be able to use the Mindstretch app.

(*) Mindstretch measures the energy used for mental and physical activity. Note that the mental load experienced by your body (= physiological stress) is not necessarily identical to the perceived one. As every individual reacts to mental load in a different way, the measures will vary for each person.

Why do you need a watch that measures heart rate?

The Mindstretch app calculates your individual mental and physical levels based on different variables (a.o. heart rate) measured on the body.

How to use this Mindstretch app?
1. Put on the Apple watch
2. Select the Mindstretch app and press play (note that you should be logged in on the iPhone app before being able to start the measurement)

In the watch app, you will be able to see in real-time your mental state (orange = energy use and green = recovery)

In the iPhone app, you will be able to:
- See the mental and physical data in a graph
- Get a score about your day regarding mental energy
- See a split of your activities in relation to their intensity
- Have an overview of your mental state in a calendar view
- Receive personalised advice (first time after 7 days of measurements)
- Add/label events in the graphs to help you discover your main stressors. This way, we can also provide information about your most energy consuming and activities that resulted in most recovery.

Curious to know what’s the science behind this cutting-edge technology?
Check our website!
BioRICS n.v.