Native mobile nanoflow timer

Hi all, I was wondering if there is a nanoflow timer that can be used within a native mobile application? My use case: They want is to have a collection be displayed on the device based on geo - location, so that when they get x metres away, for example, it appears in a list on the page. I have a table with all these collection locations including longitude and latitude uploaded into the application. I want to compare the devices location on a timer basis, say every 30 seconds using a nanoflow timer? Does anyone know if this is possible, I can’t seem to find a way to kick off a nano flow without an action from the user.  
1 answers

The app events widget has a timer option. You can find it in the Native Mobile Resources.