Before you spend a dollar building, you can find out whether anyone actually wants your app. Demand testing is fast, cheap, and the best insurance against building something nobody needs. Here is how.
The short answer
Test demand with cheap, fast experiments that measure real interest: a landing page with a waitlist, a concierge service you run manually, or pre-sales. The more commitment a test requires from people, the stronger the signal. Money beats signups; signups beat opinions.
The demand-test ladder, weakest to strongest
- Opinions. "Would you use this?" Easy to get, nearly worthless. People are polite.
- Signups. A landing page with a waitlist. Better, real action, low cost.
- Concierge. Deliver the outcome manually for a few users. If they let you, they likely have the problem.
- Pre-sales or LOIs. Someone pays or formally commits before the product exists. The strongest signal there is.
Climb as high up the ladder as you can. The higher you go, the more confident you can be.
How to run a quick demand test
- Define the offer in one clear sentence: who it is for and what it does.
- Put it in front of real target users, not friends. Ads, communities, outreach, your network.
- Ask for an action, signup, deposit, call, not an opinion.
- Measure conversion, not compliments. What fraction took the action?
Reading the result
Strong, repeated action from your target audience means demand is real, build. Crickets, or only polite interest with no action, means stop and rethink the problem before you spend.
After demand is proven
Once you know people want it, the goal shifts to building efficiently without overspending. That is where a product simulation fits: it turns the validated demand into a documented, runnable foundation, so you move from "people want this" to a real product quickly, without betting a full build budget upfront.
Proven demand? Build on it. Start a project.
Frequently asked
What is the strongest signal of demand?
Money or commitment before the product exists, a pre-sale, a deposit, or a signed letter of intent. Signups and 'I'd use that' are weak by comparison. The closer a test gets to real commitment, the more it tells you.
How long should demand testing take?
Days to a few weeks. These tests are meant to be fast and cheap. If you find yourself spending months 'testing,' you are probably overbuilding the test.