User Interview Techniques for Indie Dev: 5 Questions to Find PMF
Talk before you code. That one habit dramatically cuts the risk of building
something nobody uses.
Why Interviews Beat Surveys
Surveys → "sounds useful" lies
Interviews → actual behavior and emotions
People can't accurately predict their own future behavior. They say "yes,
I'd use that" and then don't. Past behavior is the only reliable signal.
The 5 Core Questions
Q1: When was the last time you faced [problem]?
"When was the last time you struggled with task management?"
→ Forces a recent, concrete story. Distant memories are too vague to act on.
Q2: What did you do?
"Walk me through exactly what you did."
→ Reveals real behavior — including workarounds and existing tools.
The real competitor might be "I just send a Slack message to myself."
Q3: Why did you do that?
"Why Notepad instead of Notion?"
→ Uncovers motivation and priorities behind surface-level behavior.
Q4: What was the hardest part?
"What frustrated you most in that moment?"
→ Surfaces emotional pain — where the business opportunity lives.
Q5: What are you doing about it now?
"How are you handling it today?"
→ Identifies competitors and willingness to pay.
If they're already paying for a solution, the problem is real.
Running the Interview
Sample: 5–10 people is enough (patterns repeat fast)
Length: 30 minutes each
Format: Zoom / remote works fine
Record: always get permission — playback is essential
Incentive: $5–10 gift card (doubles response rate)
Finding participants:
- Search Twitter/X for people complaining about the problem area
- Ask in comments on your dev.to / Qiita posts
- Friends-of-friends (direct friends say "great idea" regardless of truth)
Post-Interview Analysis
1. Pull out "problem language" verbatim from recordings
2. Lay 5 interviews side by side — find repeating patterns
3. Focus on the highest-emotion moments (anger, resignation, embarrassment)
PMF signals:
✅ "Can you build this?" said unprompted during the interview
✅ A specific dollar amount when you ask "what would you pay?"
✅ "Can I give you my friend's contact?" offered voluntarily
Summary
Q1: when → force a recent, concrete episode
Q2: what → actual behavior including existing solutions
Q3: why → motivation and values underneath the action
Q4: hardest → emotional pain = business opportunity
Q5: now → willingness to pay + competitor landscape
"Build while learning" is slower than "listen while building."
Interviews are the fastest path to PMF.
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