Hire a fractional leader to validate a new product when you need someone to test the business behind the idea, not just manage the build. The engagement should help you decide what to fund next, including whether to stop.
I was reviewing a proposal for an app. There were two questions underneath all the language about “laying the commercial foundation.” Would the intended audience want to use it? And would businesses pay to reach that audience?
Those aren't the same question. You can answer one and still have a business that doesn't work.
The point I made in that review was much simpler than the proposal: “They want their business to be successful and they don't want to waste a bunch of money.”
What are you actually trying to learn?
If you're the owner, start there. Not with the number of interviews or the size of the research report. What do you need to know before you put more money into this?
For an app with separate users and paying customers, that means testing both sides. What would make someone use it? Why would they come back? What would make the paying customer spend money to reach them?
Then ask what would change your mind. If every possible answer leads to “let's keep building,” you haven't given the research a decision to inform.
A useful engagement makes those decisions explicit. Here's the assumption we're testing. Here's the evidence we'd need. Here's what we'll recommend if we don't find it.
That's different from asking someone to make your existing plan look convincing.
Hire for the decision, not just the report
A fractional leader fits when you need experienced judgment through that process, but haven't established the case for an ongoing full-time role. They can shape the questions, work through the evidence with you and turn it into a recommendation about what to do next.
If you've already designed the research and only need someone to carry it out, a narrower research project may be enough.
Either way, don't buy a promise that the idea will work. Buy a clear test of whether it deserves the next investment.
Before signing, ask: “What decision will I be able to make at the end that I can't make confidently today?” If the answer is only “you'll understand the market better,” get more specific.