Stop 15 · Interview PreparationProduct Sense · 2/3

Improve an Existing Product

Part of the Product Management Roadmap

In short

"How would you improve WhatsApp?" sounds easy until you realise listing ten features is the weakest possible answer. They want one focused, well-argued improvement.

A prompt like 'how would you improve [product]' testing whether you can spot real problems and propose focused, well-reasoned solutions rather than a scattershot feature list.

The purple blob oils a bicycle chain with a small oil can.

Think of it like this

The squeaky bicycle

Your bicycle runs fine but squeaks on every turn. You don't buy a new frame, gears and seat. You find the one squeak, oil that joint, and test ride. A good improvement answer finds the squeak.

Watch it happen

How a strong answer unfolds

Interviewer
You

Improve a music app

1/6The prompt is broad on purpose. They want to see how you narrow it.

The big ideas

What you need to know

Set a goal first

Engagement, growth or revenue? The goal decides what "better" means.

One user, one pain

Depth on one real problem beats a laundry list.

Respect the product

Say briefly what already works and why, before criticising.

Name trade-offs

Every improvement costs something. Saying it shows maturity.

Save yourself the pain

Common mistakes

Oops

Rattling off ten feature ideas.

Do this instead

Pick one problem and go deep on it, with a clear reason for your choice.

Oops

Improving the product for yourself only.

Do this instead

Pick a user segment backed by reasoning, even if you're part of it.

Your mission

Improve your most-used app

~30 min

Quick check

What should usually come first in an "improve this product" answer?

Go deeper

  1. 1Pick 2-3 products you know well enough to critique with specifics, not generic praise.
  2. 2Practice narrowing to ONE strong recommendation instead of listing ten shallow ones.
  3. 3Ground your critique in a specific user segment and their specific problem.

More product sense at this stop

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