I will develop smart ai chatbots, voice calling agents and mobile apps for startups

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david_cole20
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david_cole20
David C
develop smart ai chatbots, voice calling agents and mobile apps for startups
Full Screen
develop smart ai chatbots, voice calling agents and mobile apps for startups
Full Screen
develop smart ai chatbots, voice calling agents and mobile apps for startupsdevelop smart ai chatbots, voice calling agents and mobile apps for startups

About this gig

Need an AI Powered chatbot, voice calling agent, or mobile app to help your startup or business move faster? I build production ready AI systems that qualify leads, book appointments, and answer customer questions around the clock without you hiring a team.


What I deliver:


  • AI voice calling Agents( Vapi, Retell AI
  • Inbound/Outbound Calls
  • Appointment Booking and lead qualification
  • AI Chatbots for website, WhatsApp
  • Custom Mobile App (Flutter / React Native)
  • CRM & Calendar Integration (GoHighLevel, Cal com, Twilio, Supabase)
  • Workflow Automation n8n, make com
  • Natural, human sounding voice


I work directly with founders and small teams who need a working AI system fast. Every build is scoped around your actual use case: sales qualification, customer support, appointment booking, or internal automation.


Message me with what you're trying to solve, calls, chat, app or all three, and I'll recommend the right scope before you order.

  • Frameworks

    • Flutter
    • React Native
    • NativeScript
    • Bubble
    • FlutterFlow

  • Application Type

    • Chat
    • Shopping
    • Health & Fitness
    • Finance
    • Medical

  • AI engine

    • GPT

  • Programming language

    • C
    • Python

Get to know David C

David C

Professional Full Stack App Developer That Delivers Results

5.0(3)
  • FromNigeria
  • Member sinceSep 2025
  • Avg. response time1 hour
  • Last delivery7 months

  • Languages

    English, Spanish, French, German
Many business owners and startups have brilliant ideas but get stuck with poor execution, missed deadlines, or complicated technical processes. This service is designed to take away that stress. You will get custom mobile and web app development that's clean, functional, and scalable. From smooth user interfaces to connecting your tools with powerful api integrations, every step is handled with clarity and precision. Contact me now and let's get started on your app development.

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