Mono is a new MAdTech startup developing a next-generation social platform. Founded by Pontus Hörnby Liljeblad (CEO) and Carl Grevelius (COB), the company launched its first product — DUIU — in a closed beta in Brazil in spring 2025.

DUIU is a virtual stage for short-format UGC with a unique call-and-response format and community-powered rankings — designed to unlock new forms of creative interaction.

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