Cancelling a subscription during a free trial may result in losing a free trial account.
You must always cancel a subscription at least 24 hours before the trial period ends.
How to Cancel µMagnetometer Subscription on iPhone or iPad:
Open Settings » ~Your name~ » and click "Subscriptions".
Click the µMagnetometer (subscription) you want to review.
Click Cancel.
How to Cancel µMagnetometer Subscription on Android Device:
Open your Google Play Store app.
Click on Menu » "Subscriptions".
Tap on µMagnetometer (subscription you wish to cancel)
Click "Cancel Subscription".
Cancel direct on µMagnetometer website 🌐
Reach out to Dmytro Hrebeniuk
If the company has an app they developed in the Appstore, you can try contacting Dmytro Hrebeniuk (the app developer) for help through the details of the app.