There’s a couple different ways to look at what we do at SPARK. From the logistical, manufacturing perspective: we develop physical products. But from a business/marketing/end-user perspective, what we do is help you develop better solutions to problems you’ve discovered.
How many users is enough when testing a new product?
According to Nielsen Norman Group, five users is the sweet spot for testing the usability of your product. You can learn 80% of what you need to know about how people will respond to your product from just five users, allowing you to quickly receive feedback and iterate before putting your improved design in front of five new users.