The app can also accept cash transactions, so there’s a way to track those on the go. It does not, however, connect with a cash drawer, so you’ll need a way to organise coins and notes if accepting this.
The app is not frequently updated. Last time the iOS app was updated was 1 year ago (July 2021). That is not a good indication of how serious Elavon takes the functioning of the app, as it typically requires regular updates (e.g. monthly) to fix new bugs or adapt to smartphone updates.
For security reasons, Elavon’s app doesn’t work on rooted or jail broken devices. Rooting is when the user can access system files on the device, enabling the operating system to be controlled or changed. Jail breaking is the removal of limitations imposed by the phone carrier, i.e. you may not be able to use a phone that has been unlocked (where it was previously locked to one mobile network).