Orb - Social Universe
Group chat with AI, local discovery, and live space tracking
What it does
Orb is a messaging app where every group chat has an AI assistant built in. Ask @orb to plan a trip, split expenses, create polls, or vibe check your conversation. Discover restaurants and activities near you with AI-powered Orbit Explorer. Get real-time weather alerts and NASA's photo of the day in Orb Sky. Built by a solo developer."
Does the same job
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- IBI built a fun video meeting app with 2D physics and proximity chat2022 · flat.social · ▲166
Hi HN! https://flat.social is a web video meeting app for organising fun online meetings & social events. Each participant can move around and talk with others in their proximity. Here is a quick demo if you wanna see it in action: https://youtu.be/Y2yH3twjrx4 I’ve been on it solo for around a year right now. Tech used is Next.js, Typescript, PIXI.js on the front-end and Node, Mediasoup, Socket.io and Matter.js (physics engine) on the backend. Feel free to jump in into the demo room (https://flat.social/f/Flat.Social-Demo) to say hi, I’ll be…
More ai this month
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I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com
Astute▲585Automate your B2B brand going viral, with new media creators
AI · 18d ago · company-app.joinastute.com
Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
AI · 27d ago · cactuscompute.com
Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
- IB
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
- BC
Life & fun · Apr 2026 · sam-burns.com
- IB
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app