Everything you need to measure PMF
From the 7-question survey to AI-powered insights — 10 features purpose-built for measuring product-market fit.
The analytical heart of FitSignal
The 7-question survey that tells you everything
Based on the Rahul Vohra methodology, our survey engine asks the right questions to quantify product-market fit. Customize the product name, choose delivery channels, and collect responses from the people who matter.
- Pre-built 7-question PMF template — scientifically validated
- Customize with your product name for personalized surveys
- Send via email, shareable link, or embeddable widget
- Mobile-friendly survey experience for higher completion rates
One number that tells you where you stand
Your PMF score — the percentage of users who'd be "very disappointed" without your product — is calculated in real-time. Track it over time, compare periods, and see how product changes move the needle.
- Real-time PMF score with confidence indicator
- Score distribution breakdown (very / somewhat / not disappointed)
- Trend tracking over weeks, months, and quarters
- Period comparison to measure impact of product changes
Hear your customers in their own words
Free-text responses are automatically analyzed into visual word clouds. See what your power users love (benefits) and what on-the-fence users wish was better (improvements). Filter by persona for laser-focused insight.
- Automatic keyword extraction from open-ended responses
- Separate clouds for benefits and improvement requests
- Filter by PMF answer segment for targeted insights
- Export analysis for team presentations
Three channels, one dashboard
Embeddable Widget
Add a lightweight JavaScript widget to your app to passively collect PMF feedback. Just paste a script tag — no engineering overhead.
- Single script tag — works with any stack
- Configurable trigger conditions
- Respects survey frequency limits
- Custom branding on paid plans
Email Delivery
Send surveys directly to customer inboxes with delivery tracking, open rates, and automatic reminders.
- Reliable delivery via Resend
- Per-recipient tracking and status
- Customizable sender name
- Automatic reminders (coming soon)
Persona Segmentation
Your overall PMF score might be 25%, but a specific segment could be 60%. Assign personas and find your beachhead market.
- Custom personas for your segments
- AI-powered auto-assignment
- Per-persona PMF breakdown
- Target persona filtering
Built for production
API & Integrations
Full REST API with key authentication, webhook events for real-time response notifications, and CSV/JSON/Excel import/export for customers and responses.
AI-Powered Insights
AI automatically assigns personas based on job titles, extracts keywords for word clouds, and suggests roadmap priorities. Less manual work, faster time to insight.
Slack Integration
Get notified in Slack when new responses arrive. Receive weekly PMF score digests. Share insights with your team without leaving the tools you already use.
Security & Privacy
TLS encryption for all data in transit. SOC 2 Type I compliance in progress. GDPR-ready with data export and deletion. Rate limiting and abuse prevention.
Ready to start measuring?
Create your free account and send your first PMF survey in minutes.