In the book Die Kindermacher, I trace the rise and fall of Ava, the Swiss fertility bracelet startup that was named Startup of the Year multiple times. I tell the true and gripping story of early enthusiasm, funding struggles, product development setbacks, and the psychological toll of chasing success. I followed Ava from the very beginning, spoke with dozens of people involved, and interviewed co-founder Lea von Bidder multiple times. The result is a book that offers both compelling storytelling and valuable lessons for founders. It’s a look behind the glossy promises of the startup world - at what it really takes, and what it sometimes costs.