Olive Union

Olive Union develops affordable hearing amplifiers and personal sound amplification products (PSAPs) designed to make hearing assistance more accessible. Its product lineup includes Olive Air, Olive Max, and Olive SmartEar Plus, each offering different form factors and power levels for various hearing needs and environments. The company differentiates itself through integrated ear-brain training functionality, developed under the supervision of Professor Ryuta Kawashima of Tohoku University Institute of Development, Aging and Cancer, which simultaneously trains hearing and cognitive functions including concentration and memory. All Olive products include this training feature at no additional cost. The company addresses the low hearing aid adoption rate (approximately 15% in Japan) by offering high-quality devices at accessible price points through online and retail channels. Founded in 2016 and headquartered in Seoul, South Korea, with operations in Tokyo, Japan, the company has raised approximately $20 million at the Series B stage.