Product building

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2 min read

NPS in the app

Designing NPS surveys for Avast's mobile apps that ask millions of users how we're doing without getting in their way.

Role: Design lead  Platforms: Android and iOS  Product: Avast mobile apps

I was the design lead for bringing Net Promoter Score surveys into Avast's mobile products on Android and iOS. A survey in a security app has to earn its moment: people open it to feel safe, not to fill in forms.

The invitation

The survey starts as a small card over the home screen: "How are we doing? Help us improve by taking a 1 minute survey." It says up front how long it takes. Start survey is the main button, and Not now sits right under it, so declining is as easy as agreeing.

The question

The survey asks the standard question, how likely you are to recommend Avast to a friend or family member, on a 0 to 10 scale. Instead of eleven small buttons, the score is a slider with large touch targets and the selected number highlighted.

One pattern, two platforms

The same flow ships in the Android and iOS apps.

© 2026 Petr Ševcovic.

© 2026 Petr Ševcovic.

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