Junu Yang

UI Critic by Usercall - Instantly surface the assumptions behind a UI screenshot

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Upload 1–3 screenshots and get an annotated critique that makes hidden user assumptions and risks explicit before you ship.

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Junu Yang

Many UI issues I’ve seen aren’t visual problems but unchecked assumptions about users.

The tool takes a UI screenshot and makes those assumptions explicit, along with the risk of being wrong.

This isn’t meant to replace user testing. It’s a pre-mortem to catch risky assumptions before you invest in proper testing. Curious where people think this breaks down or gives false confidence.

karan kapoor

Great UX audit product, I think it will help a lot of people building by themselves or people who are not from the design field uncover these assumptions. 🥳

I feel you could add the wins also, they might trigger more thoughts on how to fix it.


All in all, had a good time trying this as my design partner. ✌️

Junu Yang

@karan_kapoor1 Thanks for trying it out👍 Yes good point to also include positive aspects to push and encourage improvements

eric ng

Is there a limit to the complexity of the UI?

Junu Yang

@eric_wck657821 no limit👍

Van de Vouchy
Hey Junu, that reframe of UI issues being unchecked assumptions rather than visual problems is really sharp. Was there a specific design you shipped that looked great but totally flopped because of a wrong assumption about users?
Junu Yang

@vouchy we added output preview on the landing page after assuming users want to try it before seeing what the results might look like