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Show HN: WhatHappened – HN summaries, heatmaps, and contrarian picks

(www.whathappened.tech)
66 points marsw42 | 1 comments | 08 Dec 25 19:55 UTC | HN request time: 0s | source

Hi HN,

I built WhatHappened (whathappened.tech) because I have a love/hate relationship with this site. I love the content, but the "wall of text" UI gives me FOMO. I was spending too much time clicking into vague titles ("Project X") or wading through flame wars just to find technical insights.

I built this tool to act as a filter. It generates a card for the top daily posts with a few specific features to cut the noise:

1. AI Summaries: It generates a technical TL;DR (3 bullet points) and an ELI5 version for every post.

2. The Heat Meter: I analyze the comment section to visualize the distribution: Constructive vs. Technical vs. Flame War. If a thread is 90% Flame War, I know to skip it (or grab popcorn).

3. Contrarian Detection: To break the echo chamber, the AI specifically hunts for the most upvoted disagreement or critique in the comments and pins it to the card.

4. Mobile-First PWA: I mostly read HN on my phone, so I designed this as a PWA. It supports swipe gestures and installs to the home screen without an app store.

Stack: Next.js, Gemini, Supabase.

It currently supports English and Chinese. Any feedback will be appreciated! My original X post: https://x.com/marsw42/status/1997087957556318663, please share if you like it or find it helpful! :D

Thanks!

Show context
MrCoffee7 ◴[09 Dec 25 00:03 UTC] No.46199491[source]▶
It seems like each article takes a lot of vertical space. What if you changed the UI so you just displayed a title for each article with a little icon next to it like a downward arrow that you could click on if you wanted to see more of that article? That way, you could display more titles on one screen so that the user could more quickly scroll to the articles they actually wanted to see?
replies(3): >>46231656 #>>46231700 #>>46245925 #
1. marsw42 ◴[12 Dec 25 16:52 UTC] No.46245925[source]▶
Yes there is a collapse all button on the bottom right. On desktop view you can also try the table/card view switch button next to the "sort by" button for denser information.