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Meet the Team

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Katarina Kettle

Originally from New Zealand, Katarina lived in Korea in 2019 and has been learning Korean since 2018. 

She currently lives in Columbus, Ohio. 


Chelsea Guerra

Originally from Florida, Chelsea lived in Seoul, South Korea from 2014-2016. She has been learning Korean since 2009. 

Chelsea currently lives Orlando, Florida. 


Yujin Kim

Originally from Gwangju, Yujin Kim has lived in the United States since 2015. She works as a freelance designer and illustrator in California.

Find her on Instagram at

Our Story

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Gooseapple Books is a small business founded by Katarina Kettle and Chelsea Guerra in Houston, Texas. As long-time Korean learners ourselves, we know how difficult it is to find great material for intermediate and advanced learners. We tried to find books for Korean language learners based around prompts - and discovered they did not (yet) exist. 

So we teamed up with Yujin Kim to help bring our ideas to life.

As a Korean native living in the United States, Yujin was very excited to help those learning Korean and contributed her invaluable knowledge of Korean language and culture.

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