Meanwhile, as there is increased demand in travellers for travel information and purchases, travelproducts introduced by the guide services will enhance purchase intentions. Therefore, perceivedusefulness would positively influence the online purchase intentions of travellers towards travelapps; that is, H8 was supported. This result is consistent with the findings of Ho et al. (2012). Furthermore, the perceived usefulness increase in travellers from experiential marketing also increases purchase intentions, as shown in the mediation analysis of perceived usefulness (t = 7.682).