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Mobile App Dev + Backend

FreelanceJobs
CAPosted February 21, 2026

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Job Description

THERAWORLD – Mobile App Developer (iOS/Android) + Backend (AI Voice / Real-time / Production)

I'm building THERAWORLD, a premium emotional wellness app (not a basic utility app).This needs to feel cinematic, calm, premium, and polished — with strong UX flow, voice interaction, and scalable backend architecture.

I am looking for a developer (individual or small team) who can handle:

  • Mobile app development (iOS + Android)
  • Backend/API integration
  • AI/voice integration (real-time or near real-time)
  • Production-ready builds (not prototype-only)
  • Weekly sprint workflow

What THERAWORLD includes (Phase 0 MVP)

  • User onboarding + personalization
  • Guided support flows (emotional wellness sessions)
  • Voice/audio experience (speak + listen)
  • Personalized recommendations / session logic
  • Basic progress tools (check-ins / routines / journaling)
  • Clean premium UI and smooth transitions
  • Scalable backend foundation for future features

Important

This is a premium experience product.

I am not looking for a basic app clone or generic "Calm-style" screens.

I need someone who understands:

  • UX polish
  • animation/micro-interactions
  • latency and real-time voice behavior
  • clean architecture for future scale
  • how to ship production apps

Required workflow (must agree)

  • Weekly fixed-scope sprints
  • End-of-sprint demo
  • Payment after sprint acceptance
  • Code committed to my GitHub repo from day 1
  • TestFlight + Android APK builds during development

To apply, answer these 4 questions clearly (required)

1) Shipped app proof (most important)

Send 3 live mobile apps (App Store / Google Play) you personally worked on and confirm your exact role on each:

  • UI/UX
  • iOS
  • Android
  • Backend
  • QA/testing
  • Store release

2) Voice / AI experience (real work only)

Have you built a real-time AI voice feature inside a mobile app (not just text chat)?

If yes, explain briefly:

  • Push-to-talk or live streaming?
  • Tools/services used (OpenAI, ElevenLabs, WebRTC, LiveKit, etc.)
  • What part you personally built

3) Premium UI quality proof

THERAWORLD needs a cinematic, calm luxury feel with polished flow.

Share 2 examples (apps/screens) that show:

  • premium UI quality
  • polished animations/micro-interactions

4) Sprint + code ownership confirmation

Can you work with:

  • weekly fixed-scope sprints
  • demo at end of sprint
  • payment after acceptance
  • code in my GitHub repo from day 1

Please confirm yes/no and any notes.

Bonus (not required, but helps)

  • Experience in wellness / coaching / mental health / habit apps
  • Experience with audio/streaming performance and latency optimization
  • Experience designing or implementing premium motion systems
  • Experience with Firebase / Supabase / AWS

Notes

Please keep your response direct and specific.

I will prioritize people who show real shipped proof, clear technical thinking, and a professional workflow.

Contract duration of 1 to 3 months. with 40 hours per week.

Mandatory skills:

Android, iOS, Smartphone, Mobile App Development, backend, iOS Development, Android App Development

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