Arvid Kahl launched The Embedded Entrepreneur on Product Hunt in May, 2021. Within 5 minutes, it was #1 Product Of The Day.
After 6 hours, he had 371 upvotes, 164 comments and 25 reviews. After 14 hours, the book has 700+ upvotes, 233 comments and 44 reviews. At hour 18, he was at 800 upvotes. He also had 268 comments and 49 reviews.
The book sales were much better the day after the launch. He attributed this to the Product Hunt newsletter.