No, an app is not always required to set up geofencing marketing. While many businesses choose to incorporate geofencing into their mobile apps, it is not the only option. Geofencing can also be set up using web-based platforms or software development kits (SDKs) that integrate with existing apps.
Additionally, some advertising or location-based marketing platforms offer geofencing functionality that can be accessed without the need for a dedicated app. However, having an app can provide additional benefits such as more precise location tracking, personalized messaging, and a seamless user experience. Ultimately, the decision to use an app for geofencing marketing depends on the specific goals and resources of the business.