Have you ever wondered how the world’s most innovative products go from a spark of an idea to global success? The Salt Test reveals the secret: assumptions. Drawing inspiration from many of the most successful businesses of our time, this book uncovers why understanding and testing your assumptions is the key to building groundbreaking products that thrive.

In this practical and insightful guide, you’ll learn how to:

  • Navigate the Assumption Trap to avoid costly missteps.

  • Use the Product Growth Map to chart your path from idea to scale.

  • Test your solutions cost-effectively while maximizing your chances of success.

  • Apply lessons from trailblazers like Netflix, Snapchat, and Zwift.

Perfect for entrepreneurs, corporate innovators, and angel investors, The Salt Test provides a clear, step-by-step framework to tackle innovation’s greatest challenges. Whether you’re bootstrapping a startup or driving corporate transformation, this book equips you with the tools to succeed—even with limited resources.

Take the first step toward turning your vision into a scalable reality. Start the journey, test your ideas, and transform assumptions into achievements with The Salt Test.

  • 'If I had to take all the literature I have read about product innovation and start-ups, and put them into one concise book, you would get The Salt Test.'

    Mario F.

  • 'Finally practical advice on what to do once you've started and how to keep innovating your way to scale'

    TONY C.

  • 'Innovation in organizations is hard! It's fraught with competing perspectives and wrong assumptions. In this book Kingsley Maunder provides practical advice rooted in real-world experience.'

    DEAN M.

What will you learn.

  • By using the Product Phase Map, as introduced in The Salt Test, you will be able to take your product from concept to market in a practical step-by-step guide. This is achieved by first understanding the full product lifecycle, and then focusing on the four phases of innovation that make up the start of that journey.

  • Assumptions are a necessity, as they help you create the future vision for your product. However, treating assumptions as facts is one of the most common reasons why innovative products fail. The Salt Test will help guide you through making those initial assumptions, prioritising them, and then effectively testing them one by one, taking your product to scale while ensuring you don’t fall into the assumption trap.

  • The Salt Test will help you navigate the challenge of taking an idea to scale with limited start-up resources, combined with the inherent risk of building an innovative product. If you are looking for funding, The Salt Test will provide you with an insight into how investors approach investment opportunities, so you can make the best decision for your start-up, depending on where you are in your journey.

  • Product innovation is critical for established companies to remain ahead of the competition. However, there is no guaranteed success and hence it is often seen as expensive and risky. It doesn’t have to be this way. The Salt Test will guide you through the challenges you face as a corporate innovator, including achieving iterative milestones and investment strategies.

  • Read it. Loved it. Practical insights on every page.

    Tim S.