Click any tier to expand

Priority 03

Desirable

"I want to use this"

Emotional appeal

Aesthetic Quality

Visual craft, motion, and polish that makes the app feel premium and considered.

Emotional Resonance

The app reflects the user's identity or aspirations. They feel something using it.

Delight

Moments of surprise, personality, and joy that go beyond mere functionality.

Priority 02

Useful

"This helps me"

Genuine value

Real Problems

The app addresses something people genuinely struggle with — not a solution in search of a problem.

Meaningful Outcomes

Users leave having accomplished something real. There's measurable value in their life or work.

Right Scope

Does the right things and only those things. Feature bloat is the enemy of usefulness.

Priority 01 — Foundation

Usable

"I can use this"

The baseline

Learnability

First-time users can figure it out without a manual. Patterns are familiar and logical.

Efficiency

Experienced users can move fast. No unnecessary friction, steps, or cognitive overhead.

Error Tolerance

Mistakes are easy to recover from. The system guides rather than punishes.

▲   Every tier rests on what's below it   ▲
Base Usable Non-negotiable. Without this, nothing above matters.
Middle Useful The reason the app exists. A frictionless app nobody needs is still worthless.
Peak Desirable The difference between adoption and devotion.

"Good design is as little design as possible — but never less."

— Dieter Rams