Case Study: Greggs drives full-funnel app growth with Kayzen

Greggs reaches 20M users and cuts CPI by 16% with Kayzen

Greggs, a leading British food-on-the-go retailer, partnered with vendor Kayzen and its media agency Dentsu to grow awareness and cost-efficient usage of its mobile app. The challenge was to tap into the scale of in-app video inventory to reach high-value audiences and drive installs without overexposing users.

Kayzen implemented a programmatic campaign using its CPI algorithm, impression capping, and bid shading to optimize for performance. The solution featured Kayzen's interactive Video+ Quiz ad format to boost engagement. The campaign reached approximately 20 million unique users and drove over 5,700 app installs, decreasing cost per install by 16% from Greggs' original benchmark.

Greggs