Martin Johnsen

Co-founder & CEO at Subsets (YC S23)

Martin Johnsen is the Co-Founder & CEO of Subsets (YC S23), with previous experience as a Senior Management Consultant at Implement Consulting Group and an Assistant Consultant at PwC Consulting. Martin holds a MSc in Mathematical Modelling and Computation from DTU, and has also studied Data Science and management at both the BSc and exchange student levels. Additionally, Martin has pursued language studies in English, Mandarin, and Chinese during their gap years.

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Copenhagen, Denmark

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Subsets (YC S23)

Subsets is an AI engine that suggests retention experiments to increase lifetime value (LTV) for subscription media. By analyzing subscriber behavior, Subsets automatically generates audiences and measures the incremental revenue lift in lifetime value, all within a no-code platform designed for retention and growth teams. Subsets integrates smoothly with your CRM tools like Salesforce, Sailthru, and Iterable, enabling your team to use AI in the tech-stack they already use. Teams at The Athletic, Borsen, and Female Invest are using Subsets to automate retention and grow subscription revenue – without requiring scarce engineering resources.


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