Rosie Hoggmascall

Rosie Hoggmascall is a London-based product and growth expert specialising in subscription apps, monetisation, and product-led growth. With a Cambridge education and a career spanning strategic communications to leading consumer tech startups, she is currently Chief Product & Growth Officer at Fyxer AI - an email productivity tool that grew from $1M to $30M ARR in 2025. She also runs 'Growth Dives', a weekly Substack newsletter delivering annotated product teardowns to 2,000+ subscribers with a remarkable 64% average open rate.