UK100 Start-Ups: Joii
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This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent.
UK-based menstrual health startup Joii has launched the world’s first AI-powered app and pads that accurately measure period blood volume, supporting diagnosis of endometriosis and other menstrual health conditions.
This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent.
UK-based menstrual health startup Joii has launched the world’s first AI-powered app and pads that accurately measure period blood volume, supporting diagnosis of endometriosis and other menstrual health conditions.
