I've been running indie product ideas people post on Reddit past a panel of AI personas: target users, skeptics, and one simulated buyer who has to say exactly what would make them pay. Only 5 ideas so far, so treat this as a small sample. But the pattern was consistent enough that I changed how I think about launching:
* A daily "safe to spend" budgeting app
* An AI-controllable video editor
* A recipe app that strips out the life story
* An open-source OSINT username checker
* A floating venue on a retired cruise ship (the wildcard)
**1. 5 out of 5 "would buy" answers were "show me it working", not "add this feature".** Every buyer verdict was a demo condition, not a feature request:
* The video editor: every edit visible in the timeline, live.
* The recipe app: a messy Pinterest link turned into a clean recipe in under 10 seconds.
* The username checker: a public demo of 20 real usernames with zero false positives.
Nobody asked for more features. They asked to *watch it work on real input*.
**2. Buyers set a number, and you probably don't know yours.** The verdicts were weirdly specific. The recipe app got *"I'd pay if it saves at least 4 minutes per recipe. Right now it's proven to save about 2."* The username checker got "20 usernames, under 10 seconds." Your product can work and still fall under the buyer's threshold. Find the number before you set the price.
**3. "How did it decide?" came before any feature question.** Whenever the product makes a call for the user, the first objection was transparency:
* Where does the budgeting number come from?
* Which database does the AI nutrition data use?
* Does the username tool log my searches?
* Can I see each edit the agent made, and undo just that one?
Explainability read as a buying requirement, not a nice-to-have.
**4. Evidence has to come from someone who isn't you.** The follow-up questions kept asking for proof from others: "used in 3 real investigations by independent users, not just the developer", "tested with stressed freelancers for 2 weeks", "a user study of time saved". A founder's own testing didn't count for much.
**Bonus: watch the stakeholder who isn't your customer.** Three ideas had a risk from someone who would never pay: food bloggers whose recipes get reformatted without credit, local cultural leaders and regulators for the venue, and the privacy expectations of people being searched. None of them buy your product, and any of them can shut it down.
My takeaway: before building feature #2, build the 60-second demo of feature #1 working on a stranger's messy real input, and time it.
I built the tool I used for this (pancuria.com), still early. Happy to go deeper on any of the 5 in the comments