Discount apps are popular among regular customers. According to the product testers, however, the benefits are rather manageable – comparing prices is more worthwhile.
The minimum discount that is regularly possible with the collection and redemption of points and coupons is often only 0.5 to one percent. The test showed that all apps are extremely data-hungry. On average, 2200 printed A4 pages would result in the data produced by a single discount app from Android. All retailers and app providers received the grades "satisfactory" and "sufficient" on the topic of "basic protection of personal data"