I will develop linphone app, esim app, softphone app, video calling app, ai voice agent

G
graysonmatheo
G
graysonmatheo
Grayson M
develop linphone app, esim app, softphone app, video calling app, ai voice agent
Full Screen
develop linphone app, esim app, softphone app, video calling app, ai voice agent
Full Screen
develop linphone app, esim app, softphone app, video calling app, ai voice agentdevelop linphone app, esim app, softphone app, video calling app, ai voice agent

About this gig

Your next call shouldnt sound like just another app. It should feel like a complete communication experience.

I develop custom Linphone, VoIP, Softphone, eSIM, video calling, and AI voice agent apps designed around your businessnot recycled templates with a new logo.

Whether youre building a private calling platform, a modern softphone, an eSIM-powered communication app, or an AI voice solution, I can turn your concept into a polished, reliable mobile product.

What I can develop:

  • Linphone & SIP/VoIP apps
  • Softphone & calling apps
  • eSIM-enabled apps
  • Audio & video calling
  • AI voice agents
  • Custom UI/UX
  • Push notifications
  • Authentication & user management
  • Android & iOS apps
  • Performance optimization

I focus on smooth functionality, modern design, reliable communication, and an exceptional user experiencefrom concept to a production-ready product.


Have a unique communication idea? Lets build something people will actually want to use.

  • App type

    • Hybrid

  • Programming language

    • Dart
    • Java
    • JavaScript
    • Kotlin
    • Objective-C
    • PHP
    • Python
    • Swift
    • TypeScript
    • HTML

  • Frameworks

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

  • Purpose

    • Chat
    • Dating
    • Delivery
    • Streaming
    • Music
    • Shopping
    • Taxi
    • Booking
    • Social networking
    • Education

  • Tools

    • Flutterflow
    • AppSheet
    • Android Studio
    • Xcode
    • Passion.io
    • Firebase
    • Visual Studio Code

  • Expertise

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

Get to know Grayson M

Grayson M

Creative Mobile App Developer, Modern Apps and Website

  • FromUnited Kingdom
  • Member sinceAug 2026

  • Languages

    English
Hello I’m Grayson, a passionate mobile app developer dedicated to turning ideas into beautiful, functional, and user-friendly apps. I build reliable solutions for businesses, startups, and individuals, with a strong focus on performance, clean design, and customer satisfaction. Whether you need an app built from scratch, improvements to an existing app, or help bringing your idea to life, I’m here to make it happen. Let’s turn your vision into an app your users will love.

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