The 23 most useful free iPhone apps, according to Reddit

HD Sentinel Pro will show you the health of all of your drives.

Perhaps its a chat that no longer applies to your life.Its that little green box with the speech bubble.

Credit: Screenshot: iPhoneStep 2:Select the group chat you want to leave.Deleting and blocking the conversation.space and science stories?Sign up for Mashables weekly Light Speed newsletter.

click the bundle of icons at the top of the chat.you use it every day and know what it looks like.

youll want to repeat steps 1-3.

you can choose Hide Alerts or Delete and Block this Conversation.Advanced users may prefer Deluge.

This browsers claim to fame is how customizable it is.with an intuitive UI and video meetings of up to 15 people.

Downloading movies or music to local storage can be useful when you are expecting hours with no connection.although the latter is not free.