Transactional billing option (pay as you go)
The Transactional billing model enables any number of devices/handsets to capture and submit data. This model is most suitable where the quantity of data to be collected is known but the number of fieldworkers is not or will vary over time. It is also most appropriate for short bursts of activity.
Device License billing option (subscription)
The Device License billing model enables unlimited data to be submitted from a fixed number of devices/handsets. This model is most suitable where the quantity of data to be collected is uncertain but the number of users is known. It is most appropriate for long-term projects.