Budget: $2,500–$5,000 USD
Project Type: Fixed Price
Timeline: 4–6 weeks
Looking For: Senior Mobile App Developer (Flutter / React Native / Capacitor) with experience converting web apps into full mobile apps and integrating Health APIs.
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PROJECT OVERVIEW
I have an existing web application built on Base44, which includes:
• A fully designed and functional front-end UI
• User authentication
• AI-driven logic (based on body type, BMI, blood type, etc.)
• Database already set up
• Smooth, fluid, modern user experience
The web version is clean, fast, responsive, and production-ready.
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WHAT I NEED BUILT
I need this web application converted into a mobile app that is:
• Published in the Apple App Store (iOS)
• Published in the Google Play Store (Android)
• Retains the same UI/UX quality
• Fluid, user-friendly, modern
• Uses my existing backend + Base44 APIs
• Structured for future integrations (wearables + offline-first)
This is Phase 1 of the project. Future phases will expand functionality, but Phase 1 MUST be polished and professional.
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SCOPE OF WORK (PHASE 1)
1. Mobile App Build
• Convert my existing Base44 web application into a downloadable mobile app
• Framework can be Flutter, React Native, or Capacitor (developer may choose)
• App must:
• Load my Base44 screens
• Maintain all UI animations and flow
• Support portrait mobile design
• Load fast and feel native
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2. Native Mobile Features
Include in Phase 1:
• Splash screen
• App icon + branding
• Navigation transitions
• Smooth screen rendering
• Basic local caching (recent screens load even with poor connection)
• Deep linking setup
• Analytics setup (basic)
NOT included in Phase 1 (but must be architected for Phase 2):
• Full offline-first sync engine
• Deep wearable integrations (Apple Watch app, Fitbit app, sleep tracking, etc.)
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3. Light Wearable Integration (Phase 1 – Optional “Basic Sync”)
If the budget allows, include:
• Apple HealthKit basic read permissions
• Steps
• Active energy
• Resting heart rate
• Google Fit basic read permissions
(same metrics as above)
→ The developer must map these values to my Base44 backend through secure API calls.
No advanced wearable features needed yet.
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4. Backend Integration
The app must connect to:
• Base44 authentication
• Base44 API endpoints
• Base44 database connections
• AI recommendation endpoints (already built)
No backend rebuild.
No new database.
No re-architecture.
The developer only connects the mobile app to the existing system.
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5. App Store + Play Store Deployment
Developer must handle:
• App Store Connect setup
• Google Play Console setup
• Signing keys
• Certificates
• TestFlight
• Play testing
• App submission
• Fixing Apple rejections if required
I will supply:
• Developer accounts
• Branding assets
• Screenshots and marketing copy for app listings
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DELIVERABLES
By the end of Phase 1, I must receive:
1. iOS App (TestFlight + ready for App Store submission)
2. Android App (ready for Play Store submission)
3. Full source code
4. Documentation
• How the app connects to Base44
• How wearable sync is implemented (if included)
• How to update builds in the future
5. A fully functional mobile app that mirrors my existing Base44 UI
6. A future-ready architecture to support:
• Deep Apple Watch + Fitbit integrations
• Offline-first capabilities
• Advanced activity/wellness scoring
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REQUIRED EXPERIENCE
Only apply if you have proven experience in:
• Converting web applications to mobile apps
• Flutter, React Native, or Capacitor
• Apple HealthKit / Google Fit integrations
• API integrations
• Offline caching systems
• Publishing apps to Apple App Store + Google Play Store
• Creating highly polished, fluid UI/UX
Please include:
• Links to past apps you’ve built
• Examples of web-to-app conversions
• Experience with health/wellness apps
• Your recommended tech stack and why
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WHAT SUCCESS LOOKS LIKE
• The app feels native, not like a cheap wrapper
• UI is fluid, fast, modern, beautiful
• App experience = same quality or better than current Base44 web app
• Users can log in, view programs, track wellness, interact with AI
• App is stable, polished, and ready for real clients
• The architecture prepares us for deeper Phase 2 integrations
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PAYMENT MILESTONES
Milestone 1 (20%) — Project architecture + mock build
• Developer shows app shell loading Base44 login screen
Milestone 2 (40%) — Full app screens functional
• Navigation + UI implemented
• Backend connected
Milestone 3 (30%) — Wearable basic sync (if included)
• Apple Health + Google Fit simple metrics integrated
Milestone 4 (10%) — App Store + Play Store submission
• Ready for publishing
• Final QA + bug fixes
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NEXT STEPS
Please answer the following when applying:
1. Which framework would you use (Flutter, React Native, Capacitor) and why?
2. Have you integrated Apple Health or Google Fit before?
3. How would you wrap my Base44 application into a mobile-native experience?
4. What challenges do you expect with App Store review?
5. Can you deliver within the $2.5K–$5K budget?
6. What is your estimated timeline?
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END OF JOB POST
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