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Thanks to the Apple Watch Heart Rate app, watch owners can keep track of their resting and active heart rates throughout the day. In some instances, users have become aware of heart problems and sought medical attention, all because of the heart rate sensors on their wrist. Apple has included a built-in function to warn those wearing an Apple Watch of an unusually high heart rate, however this function is switched off by default.

Apps tend to pile up on the iPhone, iPad and iPod touch. Some apps are even downloaded and never used at all. Clearing out those apps that are not frequently used can simplify your iOS device and free up extra storage space. Apple makes it easy to see the last time an app was launched, which can help get rid of clutter.

It's official, iPhone owners who had their out-of-warranty batteries replaced last year can receive a $50 refund for the service. The announcement from Apple is a follow up to the $29 battery replacement program, which continues until the end of 2018. As the full price of battery replacement was previously $79 for eligible devices, this $50 credit brings pricing in line with the discounted program currently in place.

Apple has released a new Data and Privacy website to comply with the GDPR. The General Data Protection Regulation is a new law in the European Union which aims to give citizens more control over their personal data. The new website from Apple allows users with European Union accounts to download all their personal information stored by Apple, including Apple ID information, App Store activity, AppleCare history and data stored on iCloud. The service will eventually be rolled out worldwide over the coming months. This post will be updated when the full service is available in the US.

The best feature on Facebook is the "unfollow" option. It allows you to stop seeing posts from a friend without having to unfriend them. Instagram has rolled out a similar feature to its users. The "mute" option allows users to control what posts they see in their feed by hiding content from certain accounts without unfollowing them.