Kano Model
Features fall into three types — basics, performance, and delighters — and each type pays back differently.
Why PMs should care
Spending too much on basics is wasted effort — nobody writes a review about how smoothly the login worked. Spending too little on basics kills you — one broken password reset can drag your App Store rating down for months.
Performance features reward extra investment in a straight line: faster loading, more chart indicators, more detailed reports. Delighters are where the surprising wins come from, but they don't stay delighters for long. What felt magical in 2015 is expected in 2025 — think fingerprint login, face unlock, real-time fraud alerts.
Your job is to keep these three types in the right balance, and to remember that their definitions shift every 2–3 years. A feature that's a delighter today will quietly become a basic by the time you've caught your breath.
Example in product work
For a banking app, fraud alerts are a basic — their absence causes outrage, their presence generates zero emotion. Clear spending categorisation is a performance feature: the more accurate and granular it gets, the happier the user. An AI-drafted dispute letter that writes itself when a user contests a transaction is a delighter today.
But if two competitors ship it in the next 18 months, it will be a basic by 2027 — and the team that only shipped a delighter, without hardening the basics underneath, will have spent budget on a feature that now feels mandatory.
What to do when you see it
- Basics create no excitement when they're there, and outrage when they're not. Invest enough, not more.
- Performance features get better in a straight line with more investment — faster, richer, more detailed.
- Delighters don't last long. Today's delighter becomes tomorrow's basic. Don't skip basics to chase them.
- The three categories shift every 2–3 years. Review where your features sit on a regular rhythm.
Sources & further reading
- Attractive Quality and Must-Be Quality — Kano et al., 1984The original paper, published in the Journal of the Japanese Society for Quality Control, archived on J-STAGE.
- The Complete Guide to the Kano Model — Folding BurritosDaniel Zacarias's widely-cited deep dive — the go-to practical explainer for PMs applying Kano.