Show HN: Instantly surface the assumptions behind a UI screenshot

#1

Post by junetic » Wed, Feb 04, 2026, 1:10 PM UTC

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

I built a small tool that takes a UI screenshot and makes those assumptions explicit, along with the risk of being wrong.

It’s meant as a quick design pre-mortem or critique before shipping.

Would love feedback on whether this way of critiquing UI is actually useful.

Show HN: Instantly surface the assumptions behind a UI screenshot
app.usercall.co

Re: Show HN: Instantly surface the assumptions behind a UI screenshot

#2

Post by yodon » Wed, Feb 04, 2026, 2:01 PM UTC

Providing some sample screenshot+output pairs would be helpful and probably singificantly increase the odds users interact with your product.

Re: Show HN: Instantly surface the assumptions behind a UI screenshot

#3

Post by [deleted] » Wed, Feb 04, 2026, 2:43 PM UTC

[deleted]

Re: Show HN: Instantly surface the assumptions behind a UI screenshot

#4

Post by jayeshcp » Wed, Feb 04, 2026, 8:03 PM UTC

Tried first time with screenshot image and it froze, tried second time after page refresh and it says "already used free attempt"!

Re: Show HN: Instantly surface the assumptions behind a UI screenshot

#5

Post by junetic » Wed, Feb 04, 2026, 11:11 PM UTC

yodon wrote: post #2

Providing some sample screenshot+output pairs would be helpful and probably singificantly increase the odds users interact with your product.

Good point thank you. Just updated!

Re: Show HN: Instantly surface the assumptions behind a UI screenshot

#6

Post by junetic » Wed, Feb 04, 2026, 11:12 PM UTC

jayeshcp wrote: post #4

Tried first time with screenshot image and it froze, tried second time after page refresh and it says "already used free attempt"!

it takes a bit of time for llm to process. After first login-free use—login is used to prevent repeated free use abuse (It does cost us significant LLM credits) It is still free though after login