3‑Yoshi is an innovative app designed to boost the visibility of sustainable products aligned with the Sustainable Development Goals (SDGs). If you're struggling to broaden your product's recognition, this app empowers your customers to share your sustainable initiatives on your behalf. Upon making a purchase, customers automatically receive a prompt to share their thoughts on social media, completing the process with just a few easy questions. Unlike traditional review platforms where feedback is confined within the site, 3‑Yoshi amplifies voices through social media, expanding awareness of eco-friendly products. Additionally, customers who share reviews are rewarded with coupons for future purchases, making this a win-win solution for sellers, buyers, and society. This triple benefit approach exemplifies the "three-way harmony" concept that forms the core of 3‑Yoshi, promoting the growth of sustainable practices.