In an era where anyone can build,

"Why you build"
matters more than ever.

Why, Then.

Dig deep into your problem, choose with your intuition.
Define a consistent concept.

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Sound familiar?

You want to build a product, but...

You have an idea but don't know where to start

4 simple questions clarify your "Why" and guide your first step

Your concept keeps drifting as you build

Moodboard creates a visual anchor for design consistency

You can't articulate the value you want to deliver

Personas and journeys make your value proposition concrete

You can't decide on a design direction

Choose colors, shapes, and motion intuitively to generate design tokens

What is Why, Then?

Why it matters

AI can write code now.
But only you can decide
what to build.

Why, Then starts from your problem and value, articulating a consistent concept through personas, journeys, and screen structures.

Simple Pricing

Pay as you go.

Complete a project with about 15-20 units

Launch Special50% OFF all plansUntil March 2025

Trial

Try it out

20units
¥600
¥30 / Unit

Light

For 1-2 projects

50units
¥1,500
¥30 / Unit
Popular

Standard

For multiple projects

100units
¥3,000¥2,400
¥24 / Unit

Pro

For teams

200units
¥6,000¥4,200
¥21 / Unit
Best Value

Business

For large projects

500units
¥15,000¥9,000
¥18 / Unit

20 free units on signup - Limited time!

Launch special - Double the usual amount!

Let's begin.

It's time to shape your Why.