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psa for anyone whose TI-84 is being weird before exams:

there's a whole free error fix library now

→ graph not showing up? https://www.calc84.online/error-fixes/ → stuck on "Validating OS"? covered → getting decimals when you want fractions? covered → TI Connect CE not recognizing your calc? covered

also AP stats / IB math step-by-step guides (normalcdf, invNorm, LinReg, hypothesis testing): https://www.calc84.online/guides/

did you know the TI-30XS MultiView is allowed on the SAT, ACT, AP AND IB exams? it's the affordable alternative to the TI-84 (~$20 vs ~$100+)

and now there's a free online version: https://www.calc84.online/ti-30xs-calculator-online/

hey so if you're studying for SAT / AP / IB and don't have your TI-84 handy — you can just use it in your browser now

full TI-84 Plus CE emulator, completely free, no account needed. works on your phone too.

Just discovered Hallucinate — a massively multiplayer online rave that runs entirely in your browser

Built solo by one dev using GPT-5.5 + custom WebGL shaders. Hit HN front page today with 400+ points.

Customize your avatar, join a live dance floor with hundreds of real players, no login needed

hallucinate.live

The 2026 XChat Global Adoption Report shows a more fragmented pattern than many would assume — with Asia and Russia emerging as unexpected leaders in early growth signals.

It raises an interesting question: how much of platform success today is driven by product design, and how much is driven by regional digital behavior?

Full analysis: https://xchatprompts.com/en/guide/xchat-global-adoption-report-2026

2026–04–23 Update:

A reader suggested: “Should add something like Session, as well, for people who are creeped out by an “private” app demanding a phone number and using Google Play Services.”

I’ve taken that feedback and expanded the topic in a more in-depth article, now including a section on Session. You can read the full updated version on my website: xchatprompts.com . Get it 👇🏻

XChat: The good? No phone number required. True privacy. The bad? The launch date is as encrypted as the messages — nobody knows when it’s actually arriving.

Delaying from 17th to 24th... but hey, if it eventually beats the "super-app" bloatware, I'm in.

If you're in the beta or waiting for the drop, get ahead of the curve here: 👉 www.xchatprompts.com

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Grok knows what's happening NOW. Do you? 🚀 Unlike other AI models, Grok has a backstage pass to the world's conversation. At https://xchatprompts.com/xchat-prompts , we’ve curated the best prompts to help you tap into that real-time power.