I will build a custom ai mobile app with gpt chatbot and API integration

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hao lun
build a custom ai mobile app with gpt chatbot and API integration
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build a custom ai mobile app with gpt chatbot and API integration
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build a custom ai mobile app with gpt chatbot and API integrationbuild a custom ai mobile app with gpt chatbot and API integrationbuild a custom ai mobile app with gpt chatbot and API integration

About this gig

Need a custom AI mobile app that turns your idea into a reliable, launch-ready product?



I build iOS and Android applications with GPT-powered features, chatbots, secure APIs, clean UI, and scalable backends. Whether you need one AI feature added to an existing app or a complete MVP, I will recommend a practical solution for your goals and budget.



What I can deliver:


GPT / OpenAI API integration


AI chatbot or in-app assistant


Cross-platform iOS and Android development


Custom screens and responsive UI


Authentication, database, and backend APIs


Third-party API and workflow automation


Testing, bug fixing, and organized source code



My process:


1. Review your requirements and reference apps


2. Confirm scope, technology, timeline, and deliverables


3. Build and test the agreed features


4. Deliver the source code and complete included revisions



Revisions cover the original agreed scope. New screens, platforms, integrations, or major feature changes may require extra cost and time.



Please message me before ordering with your target platform, required features, design references, and preferred AI model so I can confirm the best package.

  • Frameworks

    • Flutter
    • React Native

  • Application Type

    • Chat
    • Shopping
    • Booking
    • Education
    • Social Networking

  • AI engine

    • GPT

  • Programming language

    • Dart
    • JavaScript
    • Kotlin
    • Python
    • Swift
    • TypeScript
    • SQL

Get to know hao lun

hao lun

Full Stack AI App Developer for Mobile Web and GPT

  • FromChina
  • Member sinceSep 2026

  • Languages

    Chinese, English
Hi! I am a full-stack and AI developer helping startups and small businesses turn ideas into reliable products. I build AI mobile apps, chatbots, web applications, SaaS platforms, admin systems, and WeChat mini programs. My stack includes React, Vue, TypeScript, Node.js, Python, MySQL, PostgreSQL, REST APIs, Docker, and Linux. I can help with GPT/OpenAI integration, frontend and backend development, third-party APIs, automation, bug fixing, optimization, and deployment. I communicate clearly, confirm scope before development, and deliver clean source code.

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