Updated! An app called Heart Rate, in the App Store, is scamming users for money.
Apple has strict guidelines in the App Store, and they are followed nearly all the time. But sometimes, few developers can bypass them or not follow them, and the developers of Heart Rate are one of those.
The app will claim to read your heart rate by using your fingerprint, through Touch ID. It will then lower the brightness to the minimum, and bring up a purchase dialogue, where you confirm your payment with your finger. As you can't read this, you won't know it says $90, and you will therefore get scammed.
This works very well on iPhones and iPads with Touch ID (so, older than the iPhone X or new iPad Pro), but not so much with Face ID, that comes on the newer devices from Apple.
This trick violates Apple's guidelines and misleads customers with the in-app purchases. The 'scam' could have also been added in after the App Store review - in an app update, for example.
Apple will probably remove the app soon, as it typically does after the press reports it. We'll issue updates when we get them!
Update 1: It seems after searching for the app on the App Store, Apple have acted back and now removed it from being purchased. If you have it installed, it won't be removed - so you'll have to do that yourself.
Article Source: 9to5Mac
We will not be publishing an App Store link to the app and recommend you do not download Heart Rate Measurement, or any similar apps. We also advise to not click on the link in 9to5Mac's article, that lets you download it!