TripHive — Offline-First Collaborative Trip Planner

Active

React NativeExpoTypeScriptWatermelonDBPowerSyncMapLibre GLSupabaseFirebase

TripHive — Offline-First Collaborative Trip Planner interface screenshot

📸Live Application Interface

Problem

Group trip planning is fragmented across WhatsApp, Google Docs, Maps, Splitwise, and email. Nothing talks to each other, and every app breaks the moment you lose WiFi — exactly when you need it most.

Business Impact

Group travelers currently juggle 5+ tools. TripHive replaces all of them with one offline-capable app. The 'join with a link, no login' model removes the biggest adoption barrier for group apps.

System Approach

React Native + Expo + TypeScript for cross-platform mobile development
WatermelonDB for offline-first local database with lazy loading
PowerSync for delta-based background sync when connectivity returns
MapLibre GL + Protomaps for interactive maps with downloadable offline tiles
Supabase for backend (Auth, Postgres, Realtime, Storage) — zero custom backend code
Firebase Cloud Messaging for push notifications
RevenueCat for freemium subscription management

Key Decisions & Trade-offs

Offline-first over online-first — trips happen in airports, foreign countries, and rural areas with no WiFi
WatermelonDB over Realm — better React Native integration, true lazy loading, SQLite under the hood
Supabase over custom backend — ship faster, Realtime subscriptions built-in, generous free tier
No login to join — share a link, friends see the plan instantly. Removes the #1 group adoption killer
MapLibre over Google Maps — offline tile downloads, no per-request API costs

Current Status

Complete product spec with 10 specification documents, 25 UI screen designs, technical architecture, monetization strategy, and week-by-week development roadmap finalized.

Roadmap

Implement core React Native scaffold with Expo
Build offline-first itinerary CRUD with WatermelonDB
Add MapLibre integration with offline tile downloads
Implement expense splitting with real-time sync
Launch beta on Google Play Store

What I'd Improve Next

Could add AI-powered itinerary suggestions based on destination and group preferences
Consider adding flight/hotel price tracking integration

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PaisaGuard — Family Budget Survival App — Middle-class families worldwide track expenses inconsistently — UPI apps show transactions but don't enforce budgets.
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Reliability & Production Readiness — Load testing, observability, and API contracts.
Open Source Repos — Browse the source code behind these projects.

System Approach

React Native + Expo + TypeScript for cross-platform mobile development

WatermelonDB for offline-first local database with lazy loading

PowerSync for delta-based background sync when connectivity returns

MapLibre GL + Protomaps for interactive maps with downloadable offline tiles

Supabase for backend (Auth, Postgres, Realtime, Storage) — zero custom backend code

Firebase Cloud Messaging for push notifications

RevenueCat for freemium subscription management

Key Decisions & Trade-offs

Offline-first over online-first — trips happen in airports, foreign countries, and rural areas with no WiFi

WatermelonDB over Realm — better React Native integration, true lazy loading, SQLite under the hood

Supabase over custom backend — ship faster, Realtime subscriptions built-in, generous free tier

No login to join — share a link, friends see the plan instantly. Removes the #1 group adoption killer

MapLibre over Google Maps — offline tile downloads, no per-request API costs

Explore More

ClinicAI — WhatsApp AI Clinic Assistant — India has 12 lakh+ small clinics running on phone calls and paper diaries.

MicroItinerary — AI Travel Planner — Travel apps optimize for proximity and ratings.

StellarMIND — Chat-to-SQL with RAG — Business users need to query databases without knowing SQL.

MyFinancial — Personal Financial Advisor — Financial planning in India is fragmented across banks, insurance, and tax documents.

SanatanApp — Hindu Devotional App — Devotional users in India juggle 5+ separate apps for Chalisa, Gita, Aarti, Ramayan, and Mahabharat.

SynFlow — Enterprise Intelligence Platform — Private deal networks rely on manual introductions and spreadsheets.

FinBaby (Jama) — Personal Finance Tracker — Indian middle-class families track expenses across UPI apps, bank statements, and paper notebooks.

RetailOS — Multi-Tenant Retail SaaS — Indian kirana stores and small retailers use paper registers or basic billing software with no inventory tracking, no GST compliance, and no offline support.

ScamRakshak — On-Device AI Scam Detector — Indians lose thousands of crores annually to digital scams via WhatsApp, SMS, and social media.

PaisaGuard — Family Budget Survival App — Middle-class families worldwide track expenses inconsistently — UPI apps show transactions but don't enforce budgets.

rohitraj.tech — Engineering work is often invisible.

Reliability & Production Readiness — Load testing, observability, and API contracts.

Open Source Repos — Browse the source code behind these projects.