LoopIn - My entry for the @Contra HQ x @Bubble challenge! πΏ
Category - Communication
Concept
LoopIn is a hyperlocal social network that connects neighbors inside the same apartment building through a private community feed, a neighbor directory, and a simple invite code system.
The app gives every building its own space where residents can share updates, ask for help, offer things, and stay informed about what's happening where they live β without the noise of generic social media or chaotic group chats.
Inspired by the energy of spring, connection, and new beginnings, LoopIn encourages neighbors to step out of anonymity, meet the people around them, and build a small but real community starting from their own front door.
Core Features:
- Private building feed with 4 post categories: Alert, Help, Offer, Question
- Neighbor directory with floor and apartment details
- Invite code onboarding β residents join only with a verified building code
- Image support on posts
- Like and comment on every post
- Admin dashboard with pinned announcements
- Automatic subscription tier based on number of apartments
Monetization Strategy - LoopIn uses a building-level subscription model paid by the administrator. The plan is calculated automatically based on apartment count.
Plans include:
Micro β 1 to 20 apartments β 29 RON/month
Standard β 21 to 60 apartments β 59 RON/month
Large β 61 to 150 apartments β 99 RON/month
Complex β 151+ apartments β 179 RON/month
30 days free trial, no credit card required. Residents always use the app for free.
Why It Matters - Most neighbors don't know each other's names. There is no local app in Romania that solves this. LoopIn is the first hyperlocal building community app in a market of 4.5 million urban apartments, with zero direct competitors.
Built With Bubble - Built fully using Bubble's native mobile editor as a polished mobile-first experience for the Bubble Spring Hackathon.
Try it now - Open LoopIn in BubbleGo, tap "Join with a code" and enter 123123 to explore a live building community with real posts, comments and neighbors.
Most founders already have the idea. Many already have a first version, built with an AI tool like Lovable, Bolt or Cursor.
If thatβs you, you just found yourself a full stack AI engineer and mobile app developer.
The hard part is making it real. Users who sign up, pay, and trust it with their data. Thatβs the part I do.
Send me your spec, your PRD, or your AI-built app. I build the core flow first, so you see it working in days, not weeks. Then we ship the rest in weekly releases you can test yourself.
One founder hired me for a $120 Supabase job. Today her app is live on the App Store and Google Play, and sheβs hired me for every phase since.
What I build:
AI agents and automations
Web apps and SaaS on Next.js and Supabase
Mobile apps in React Native and Flutter
AI assistants that answer from your own data
Send me your spec here on Contra, and Iβll tell you what Iβd build first.