Why can't Sorted³ add location alerts?
We currently do not support location reminders. The current issue we have is that the API from Apple is quite old and has some limitations.
For example, we cannot set a location alert that will only trigger tomorrow at 5 pm. Once the alert is set, it will trigger as soon as you cross the GPS barrier. Which we feel will confuse a lot of users who would expect the location-based alert to respect the scheduled date/time.
We'll revisit this topic again when Apple improves their API.