This app carries on a specific task: keeping track of your location regularly based on an interval of time and monitoring your responses to the notifications.
The default interval is set to 20 minutes. It can be set from 5 minutes to one hour. You can set a destination as well. In order to update a new data, iOS will alert you at the expiring of each interval. If you respond to the notification, the app uploads a new record to iCloud.
Update your journey and share it with others.
When you invite other people, they can see when and where you've been, if you've reached your destination and if you have not responded to a notification. You can join the journeys shared by others too.
There are several opportunities to use the app, because of safety as well as others. You might monitor your daughter at a rock concert in a crowded place, catch with friends for a happy hour in downtown just after the work, check your husband coming home from office and prepare the dinner just in time or see if all the attendees reached the party.
You can update new data using the app and the iMessage extension too.
The valued functionality of the app is monitoring missed responses: that happen in case you don't update a new data as expected at the expiring of each interval.
When a new data is uploaded to iCloud and marked as missed, you and the other users can see it anyway with the date and time. To get missed response tracking, you must enable the Background App Refresh service.