Get a fully functional AI chatbot or mobile app built by expert London-based developers — complete with source code, authentication, and seamless AI model integration tailored to your business.
I Will Build an AI Chatbot or AI-Powered Mobile App
AI chatbot integration into your existing mobile app — the fastest way to add intelligence to what you already have.
- Integration of an AI model into your existing app
- Chatbot integration (rule-based or AI-powered)
- User authentication implementation
- Clean, commented source code included
- OpenAI / ChatGPT LLM integration supported
- Unlimited revisions throughout
Full cross-platform mobile app with AI chatbot, custom design, and Android & iOS delivery.
- Everything in Essentials
- Functional Android application built and delivered
- Functional iOS application built and delivered
- Custom application / UI design included
- Cross-platform development via Flutter or React Native
- Clean, commented source code for both platforms
Complete AI mobile app with fine-tuned custom LLM and full-scope AI application development.
- Everything in Boost
- Custom AI model fine-tuning to your dataset or use case
- Custom LLM training and integration
- Cloud-based chatbot deployment (AWS or GCP)
- Advanced AI feature integration (NLP, predictive analytics, voice, or recommendation systems as scoped)
- Clean, commented source code for entire project
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Key details about this service to help you decide. Generated by Zinn Hub, not the seller.
Value Position
Chatbot Types Covered
Tech Stack
Source Code Included
Delivery & Upgrade Path
What You'll Receive
Full Description
Your business deserves intelligent software that works as hard as you do. Whether you need a smart chatbot embedded into your existing app, a brand-new AI-powered mobile application for Android and iOS, or a fully fine-tuned custom LLM experience — this service delivers it end to end, with source code included.
Artificial intelligence is no longer optional for competitive businesses. It powers customer engagement, automates support, personalises user journeys, and unlocks insights that manual processes simply cannot match. This service exists to bring that capability directly into your product.
We are Zinn Digital, AI developers based in London, England. Our team builds across the full AI software stack — from chatbot integration on an existing app right through to cross-platform mobile applications with deeply embedded, fine-tuned AI models.
WHAT WE BUILD
We develop and integrate a wide range of chatbot types: hybrid chatbots, AI-powered chatbots, keyword-based chatbots, contextual chatbots, transactional chatbots, voice-activated chatbots, and social messaging chatbots. On the AI application side, we deliver custom LLM training, AI fine-tuning, custom GPT apps, healthcare AI applications, cloud-based chatbot deployment on AWS and GCP, and ChatGPT/OpenAI LLM integrations.
TECHNOLOGIES WE USE
Node.js, Express.js, Python, TensorFlow, Flutter, React.js, Next.js, and MongoDB. This breadth means we choose the right tool for your project rather than forcing your project into a single framework.
WHAT EVERY ORDER INCLUDES
Every tier ships with clean, commented source code — so you own what we build. Authentication is implemented from the start. We are available around the clock via order chat, and revisions are unlimited across all tiers.
HOW IT WORKS
1. You place your order and share your project details via the requirements form.
2. We review your brief and confirm scope within one business day.
3. Development begins immediately — you receive progress updates through order chat.
4. On delivery, you receive your source code and a handover note. Revisions are handled promptly.
WHO THIS IS FOR
This service suits founders building AI-first products, businesses wanting to add a chatbot layer to an existing app, healthcare or e-commerce companies seeking intelligent automation, and any team that wants a production-ready AI application without building an in-house engineering department.
If you are unsure which tier fits your project, send a message before ordering — we will point you in the right direction.
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Compare Packages
| Feature | Essentials | Boost | Premium |
|---|---|---|---|
| Delivery Time | 10 days | 21 days | 30 days |
| Revisions | unlimited | unlimited | unlimited |
| Integration of an AI model into your existing app | ✓ | ✕ | ✕ |
| Chatbot integration (rule-based or AI-powered) | ✓ | ✕ | ✕ |
| User authentication implementation | ✓ | ✕ | ✕ |
| Clean, commented source code included | ✓ | ✕ | ✕ |
| OpenAI / ChatGPT LLM integration supported | ✓ | ✕ | ✕ |
| Unlimited revisions throughout | ✓ | ✕ | ✕ |
| Everything in Essentials | ✕ | ✓ | ✕ |
| Functional Android application built and delivered | ✕ | ✓ | ✕ |
| Functional iOS application built and delivered | ✕ | ✓ | ✕ |
| Custom application / UI design included | ✕ | ✓ | ✕ |
| Cross-platform development via Flutter or React Native | ✕ | ✓ | ✕ |
| Clean, commented source code for both platforms | ✕ | ✓ | ✕ |
| Everything in Boost | ✕ | ✕ | ✓ |
| Custom AI model fine-tuning to your dataset or use case | ✕ | ✕ | ✓ |
| Custom LLM training and integration | ✕ | ✕ | ✓ |
| Cloud-based chatbot deployment (AWS or GCP) | ✕ | ✕ | ✓ |
| Advanced AI feature integration (NLP, predictive analytics, voice, or recommendation systems as scoped) | ✕ | ✕ | ✓ |
| Clean, commented source code for entire project | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Build an AI Chatbot or AI-Powered Mobile App
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Frequently Asked Questions
The Essentials tier is designed exactly for that scenario. It integrates an AI model and chatbot into your existing mobile app, with authentication and full source code, delivered in 10 days.
Not necessarily. If you have an existing dataset or pre-trained model, we can use it. If not, we will guide you through what is needed or build and train a model as part of the scope — particularly relevant for the Premium tier which includes custom LLM training and fine-tuning.
At minimum, we need a clear description of your project, access credentials or existing codebase (if applicable), and any relevant content, branding, or dataset you wish to use. The more detail you provide upfront, the smoother the build. We will follow up via order chat if we need anything further.
Yes. Every tier includes the full, commented source code. Once delivered and the order is complete, the code is yours to use, modify, and deploy as you see fit.
Yes — the Boost and Premium tiers deliver functional apps for both Android and iOS using cross-platform frameworks such as Flutter or React Native. Native development can be discussed for specific requirements before ordering.
Revisions are unlimited on all tiers and are handled through the order chat. Simply describe what needs adjusting after each delivery and we will update accordingly until you are satisfied.
Depending on the tier and scope agreed, we can integrate voice assistants, recommendation systems, image recognition, predictive analytics, sentiment analysis, natural language processing (NLP), and more. Share your requirements before or after ordering and we will confirm what is achievable within your chosen tier.
Yes. If your requirements grow during development, contact us via order chat and we can discuss upgrading the scope. We will always agree any changes and additional costs with you before proceeding.
Customer Reviews
See what our customers say about this Zinn
The project was smooth and professional. Communication was clear, updates were consistent, and the work was polished with great attention to detail. Delivered on time. Highly recommended for frontend mobile development.
Jakaria, you're an amazing developer who gets the job done, no excuses, the 'does what it takes to make it happen' type of developer. You're the type of developer I enjoy working with and hope to work with you again.
Working with Jakaria was a fantastic experience. He was highly reliable, communicated clearly throughout, and saw the project through to completion without any issues. I wouldn’t hesitate to collaborate with him again!
I had a rough idea in mind, but the developer added touches that made it feel polished and professional without losing the friendly vibe I wanted. The effort really shows.
Working together felt effortless. Messages were always clear and timely, and you could see how much effort went into getting things right. I’m genuinely thankful for that.
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