I will develop softphone app, linphone app, calling apps, voip app, esim app with sip

J
johnbrockk
J
johnbrockk
John Brock
develop softphone app, linphone app, calling apps, voip app, esim app with sip
Full Screen
develop softphone app, linphone app, calling apps, voip app, esim app with sip
Full Screen
develop softphone app, linphone app, calling apps, voip app, esim app with sipdevelop softphone app, linphone app, calling apps, voip app, esim app with sip

About this gig

Looking to build a powerful, modern communication app?

I specialize in developing high-quality Linphone and VoIP-based applications tailored for seamless voice and video communication across Android and iOS.

From custom softphone apps to advanced calling platforms, I deliver secure, scalable, and user-friendly solutions designed for real-time communication.

What you'll get:

  • Custom Linphone/VoIP softphone app (Android & iOS)
  • SIP account & SIP trunk integration
  • eSIM integration for modern connectivity
  • HD voice & video calling
  • Secure messaging and encryption
  • User-friendly UI/UX design
  • Push notifications & call management
  • Auto-dialer and contact sync
  • Reliable backend & API integration

Why choose me:

  • Clean, professional UI/UX
  • Scalable and secure architecture
  • Fast delivery & clear communication
  • Ongoing support and updates

Let's bring your communication app idea to life with a reliable and feature-rich solution.

Contact me before placing an order to discuss your project requirements.


  • App type

    • Hybrid

  • Programming language

    • Dart
    • Java
    • Objective-C
    • PHP
    • Python
    • Swift
    • TypeScript
    • HTML
    • React Native
    • Flutter

  • Frameworks

    • Flutter
    • NativeScript
    • Laravel
    • Kodular
    • SwiftUI
    • Jetpack Compose Multiplatform
    • React Native

  • Purpose

    • Chat
    • Delivery
    • Streaming
    • Music
    • Shopping
    • Booking
    • Social networking
    • Entertainment
    • Maps & navigation
    • Education

  • Tools

    • Power apps
    • GoodBarber
    • Flutterflow
    • Android Studio
    • Passion.io
    • Firebase
    • Visual Studio Code

  • Expertise

    • Cross browser/Device compatibility
    • Localization
    • Performance
    • Security
    • Design
    • API integration

Get to know John Brock

John Brock

App Development Expert

  • FromUnited Kingdom
  • Member sinceApr 2026

  • Languages

    English
I am a passionate and detail-oriented App Developer specializing in building high-quality, user-friendly mobile and web applications. I turn ideas into fully functional digital products that are fast, scalable, and visually appealing. With experience across Android, iOS, and cross-platform development, I focus on creating seamless user experiences backed by clean, efficient code. Whether it’s a startup idea, business solution, or custom app feature, I bring creativity, technical expertise, and problem-solving skills to every project.

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