Project Title Build Offline-First Mobile App for Small Business Profit Tracker with Mobile Money Subscription (Android + iOS) Project Description I am looking for an experienced mobile app developer or development team to build a professional offline-first mobile application for small business owners such as: Market traders Tomato sellers Grocery shop owners Barbers Salons Kiosks Small stores Phone repair shops Informal businesses The app will help users understand their daily sales, estimated profit, operating capital, expenses, savings, and business growth in a very simple way. Most small businesses do not track profit properly and often confuse capital with profit. This app should solve that problem. Main Goal of the App Users should quickly enter: Opening capital Total sales for the day Daily expenses Withdrawals taken Then the app automatically calculates: Estimated profit Capital portion Safe money to spend Savings amount Business growth charts Important Requirement: OFFLINE FIRST The app must work without internet because many users do not always have data. Offline Features Required: Add daily entries Profit calculations Dashboard Charts Reports Local data storage Internet Needed For: Login / registration Subscription verification Cloud backup / sync Notifications App updates Preferred local storage: SQLite / Hive / similar Platforms Required Android App (Priority) iOS App Admin Panel / Web Dashboard (Preferred) Preferred Framework: Flutter (Highly Preferred) Alternative: React Native Main Features Required 1. Authentication Phone number login Email login Password reset Secure user accounts 2. Business Setup User enters: Business name Business type Currency Profit percentage Savings percentage Weekly savings target 3. Dashboard Display: Today Sales Estimated profit Expenses Capital remaining Safe to spend Savings added Growth Charts Daily sales trend Weekly profit growth Monthly performance Savings growth 4. Daily Entry Screen Simple quick form: Opening capital Total sales today Expenses today Withdrawals today Notes One-click save. 5. Automatic Calculations Example: Sales = K1,500 Profit % = 30% Results: Profit = K450 Capital = K1,050 Savings % from profit: Savings = K90 Spendable profit = K360 6. Savings / Chilimba Feature Users can save automatically for: Chilimba Rent School fees Stock reinvestment Emergency fund Features: Auto-save percentage from profit Progress tracker Weekly reminders 7. Reports Daily / Weekly / Monthly reports: Sales Profit Expenses Withdrawals Savings Growth % Export PDF/Excel preferred. 8. Notifications Enter today sales reminder Subscription expiry reminder Weekly savings reminder Too much withdrawal warning Subscription / Monetization System (Very Important) The app should have paid access model. Access Model: Free Trial: 3 days free trial Then paid subscription required. Subscription Plans: K5 Daily K25 Weekly K80 Monthly Required Payment Methods: Airtel Money MTN Mobile Money Zamtel Kwacha (optional later) Need automatic account unlock after payment. Subscription Logic Required User pays Access activated automatically Expiry countdown Renew reminders Grace offline mode (2–3 days) Server validation when online Security / Protection Need protection against abuse: Account-based access Device linking Premium lock system Secure backend validation API protection Admin Panel (Preferred) Need web dashboard to manage: Users Active subscriptions Payments Notifications Reports Support tickets Analytics UI/UX Requirements App must be: Very simple Fast Clean modern design Easy for non-technical users Suitable for low-end Android phones Minimal typing Preferred Tech Stack Frontend Flutter Backend Firebase or Supabase Database Firestore / PostgreSQL Notifications Firebase Cloud Messaging Deliverables Required Please provide: Android APK / AAB iOS build/source Full source code Backend setup Admin panel Documentation Deployment support Bug fixing after launch Please Include in Proposal Similar apps built Recommended tech stack Estimated timeline Total cost Payment integration experience Offline sync experience Project Vision Build the best business money control app for African small businesses. Simple, practical, offline, profitable.