I will setup esim app, linphone app, voip app, textnow app for android and ios

J
jamesmaloneyy
J
jamesmaloneyy
James M
setup esim app, linphone app, voip app, textnow app for android and ios
Full Screen
setup esim app, linphone app, voip app, textnow app for android and ios
Full Screen
setup esim app, linphone app, voip app, textnow app for android and iossetup esim app, linphone app, voip app, textnow app for android and ios

About this gig

Are you looking to build a professional eSIM app, VoIP calling app, Linphone SIP client, or a full TextNow-style calling & texting app for Android and iOS?

You're in the right place.

I specialize in creating high-performance communication apps from UI/UX design to full system development including voice calling, messaging, number management, and backend integration with VoIP or eSIM providers.


Whether you're a startup, telecom brand, or entrepreneur, I will help you launch a secure, scalable, user-friendly app your customers will love.


WHAT YOU GET

  1. Custom UI/UX Design (Figma)
  2. Professional App Development
  3. Android & iOS Frontend
  4. Backend Integration (Telnyx, Twilio, Plivo, custom SIP, etc.)
  5. Real-time Calling Setup (SIP/VoIP)
  6. SMS/MMS Integration
  7. Number buying/assigning system
  8. Secure login & user system
  9. Clean, modern, branded interface
  10. Full documentation + support


TECHNOLOGIES I USE

  • React Native / Flutter
  • SIP / VoIP / Linphone SDK
  • Telnyx / Twilio / Plivo APIs
  • Rest APIs
  • Node.js / Firebase
  • Figma UI/UX

READY TO START?

Send me a message with your idea or requirements.

I'll guide you through everything and help you build a communication app that stands out.


Thanks.

  • App type

    • Hybrid

  • Programming language

    • TypeScript
    • React Native
    • Python
    • Java
    • Kotlin
    • JavaScript
    • HTML

  • Frameworks

    • Flutter
    • Ionic
    • Kivy
    • NativeScript
    • Laravel
    • Jetpack Compose Multiplatform
    • Node.js

  • Purpose

    • Chat
    • Dating
    • Delivery
    • Streaming
    • Booking
    • Finance
    • Social networking
    • Entertainment
    • Maps & navigation
    • Productivity tools

  • Tools

    • Power apps
    • Xamarin
    • Flutterflow
    • Xcode
    • Firebase
    • BuildFire
    • Visual Studio Code

  • Expertise

    • Cross browser/Device compatibility
    • Localization
    • Performance
    • Security
    • Design
    • Ads & monetization

Get to know James M

James M
  • FromUnited Kingdom
  • Member sinceDec 2025

  • Languages

    English, French, Spanish
Mobile App Developer, iOS & Android Expert Flutter & React Native Specialist I’m an App Developer specializing in building clean, fast, and user-focused mobile and web applications. I turn ideas into scalable digital products—handling everything from UI/UX, backend integration, API development, and performance optimization. I’m committed to writing high-quality code, delivering on time, and creating apps that feel effortless for users. Let’s build something great together.

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