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A geofence-based social network app 6 years in development

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My name is Adrian. I'm a Software Engineer and I spent 6 years developing a perimeter-based geofence-based social media app.What it does:- Allows you to load a custom perimeter anywhere on the geographic map (180° E and W longitude and 90° N and S latitude), to cover area any area of interest- Chat rooms get loaded within the perimeter- You can chat with people within the perimeterI developed a mobile app that uses an advanced geofence-based networking system from 2013 to 2019. My goal was to connect users within polygon geofences anywhere in the world. The app is capable of loading millions of polygon geofences anywhere in the world.https://enterpriseandroidfoundation.com/assets/images/other/...But people didn't really have a need for this. So after failing, I spent the next 6 years trying new ideas to use FencedIn for. I tried a location-based video app and a place-based app that had multiple features. Nothing worked, but now I'm almost finished developing ChatLocal, an app that allows you to load a perimeter anywhere on the geographic map, which loads chat rooms.The tech stack is 100% Java (low-level mostly). I have a backend, commons library and an Android app. Java was the natural choice back in 2013. However, I still wouldn't choose anything else today. Java is the best for long-term large-scale projects. (I'm also using WildFly. PostgreSQL and a Linux server.)This app is still not fully finished, but I think the impact on society might be tremendous.The previous app to ChatLocal, LocalVideo, is fully up on the Google Play store and can be tested. It has 88% of the features of ChatLocal, including especially the perimeter-based loading system.The feedback I'm mostly looking for is new ideas and concepts to add to this location-based social media app. And how strong of a value proposition does the app have for society.

HN · launched Jan 8, 2026 · 78 upvotes (top 13%) · 1 view

Niche: niche social networking platforms · 322 launches, 34 in the last 7 days ▲ +26% · Explore this niche →

Category and tags

  • Horizontal
  • Communication
  • B2C
  • Not AI
  • Commercial product

Visit website ↗ Source listing ↗

Could you build this?

Partial A simple map chat can be vibe-coded, but an arbitrary polygon geofenced social network with live messaging at scale requires specialized geospatial indexing and real-time clustering infrastructure.

What it would actually take: The backend requires spatial database indexing (PostGIS, Uber H3, or Google S2 geometry libraries) coupled with distributed WebSockets (e.g., Redis Pub/Sub, Elixir/Phoenix, or Go) to calculate point-in-polygon evaluations dynamically per message. The hard parts include handling boundary edge cases, high spatial query throughput when millions of dynamic perimeters overlap, and battery-efficient client-side background location streaming.

Discussion

20 comments analyzed.

Competitors mentioned: Yik Yak, OsmAnd (geofenced Wikipedia), Twitter (location-based notifications)

Concerns raised: Malicious reports become abuse vector, Location spoofing easy to implement, Play Integrity unreliable for security, Rooted/old devices bypass detection, Chat without primary task converges to toxicity

Feature requests: Geofences for parks, not just neighborhoods, Additional area information based on perimeter, Root detection for iPhone

Competitors

Other products that read as similar to this one : 171 launches clear the similarity bar, closest 8 shown.

Attention rank: #26 of 172 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 64 days after the earliest competitor.

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