About Us

Strum team.

The Beginning of Strum


Isaac Changil Lee
Founder & CEO


Isaac, overly fanatic about productivity, has hardly endured an unproductive world in 16 years of his career as a software engineer and product developer. That's why he founded Flexcil, the featured iPad note app, because he could not stand the way of reading papers on tablets in 2014.

Eventually, he conceived the idea of Strum while reasoning unprecedented productivity of education and remote workers during his stay in Silicon Valley in 2017.

Now Strum expanded the thoughts to aspire to break down every way of communication by high performance app and humanized user experience.

The mission of Strum is that discovers and develops the leading products to innovate the paperless environment and collaboration seamlessly to let people work and study delighted.