
mapdap
Hyperlocal social chat with the people actually near you
What it does
mapdap is a hyperlocal social chat app for iOS. Every chat room is anchored to a geohash-bounded zone — users only see and message people physically near them. Rooms persist around real-world places (your block, your campus, a conference) Anonymous-friendly by default — real name, phone number, and home location are private. Sign in with Apple, phone, or email. Rolling out city by city, with a waitlist for unsupported regions at mapdap.com/waitlist.
Does the same job
all alternatives →


- MAMapChat – A simple location based chat in 300 lines of code2015 · idoco.github.io · ▲205
- SLSpacetime locates a contact on a map by texting them a link to click on2012 · ▲89
I find myself often texting people, "where are you?" so I wrote this little iPhone app that lets me text them a special link. When they click the link, it uses the HTML5 geolocation API to report their location and shows it on a map. http://whru.at/ It's only as accurate as the HTML5 geolocation API, but I've been finding it pretty useful. What do you think?

More life & fun this month
the category →- TL
Life & fun · 10d ago · louisabraham.github.io



Photosynthesis fires two of your iPhone
Life & fun · 29d ago · photosynthesis.camera
- CCCreatium Coach▲320
Your multimedia mentor that takes you from mid to great
Life & fun · 11d ago · producthunt.creatium.info
SoloUno▲310Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
- FM
Dev tools · May 2026 · github.com