We're really fortunate in Digi as the vast majority of customers renew.
Living testament to how well it works, we think.

We constantly improve Digi and we don't charge for updates so any new features we add are FOC.

They just get added and because Digi is cloud-based they appear immediately.
 
So people keep coming back and even those that don't renew, many return to the Digi fold at a later date.