Interactive NPS Calculator (by Delighted) - Calculate your NPS easily with this interactive free tool.
Kochava - Mobile attribution and analytics platform for app marketers
TinyNPS - Simple NPS feedback
Delighted + NomNom Integration - Turn your NPS responses into product insights
mightysignal - The engineer's approach to lead generation.
Wootric - Wootric is software that allows apps and websites to take customer satisfaction surveys so that you can properly gauge the popularity and success of your app through the eyes of the people using it. Read more about Wootric.