CoinJinja vs Four Minute Books

Japan's Leading Crypto Media Operation

We are a leading digital media and information services provider for the crypto asset and blockchain technology community. Founded in November 2017, we operate one of the top cryptocurrency portals, CoinJinja.com, and the popular cryptocurrency portfolio management app, CoinView. These two products dominate their respective niches within Japan, and we are in the process of expanding our reach among speakers of English, Chinese, and Korean. We also have a growing number of email newsletter subscribers and social media followers.

Making you smarter in 4 minutes or less.

Four Minute Books brings passionate readers and book nerds 4-minute book summaries of the world's best non-fiction books. They're short on time, but big on learning. With each summary the reader can learn 3 valuable lessons in 4 minutes or less, while simultaneously selecting which books to read next.

We save you time and accelerate your learning.

If you're driven, busy, love to learn, but don't have as much time for reading as you'd like to, then this is for you.

We deliver 7 new book summaries straight to your inbox every Saturday, so you can digest the key points from 7 books in less than half an hour each week.