Get a bespoke GPT, AI chatbot or cross-platform AI application built to your exact business requirements — professionally developed and seamlessly integrated with your existing systems.
I Will Build a Custom GPT, AI Chatbot or AI App for Your Business
A custom GPT built and integrated with your existing systems — the ideal entry point for AI adoption.
- Custom GPT development tailored to your business
- API integration with your existing systems
- Basic AI chatbot setup to enhance customer interactions
- Professional configuration for reliable performance
- 1 revision round included
- Delivered within 3 days
Everything in Starter plus advanced configuration for optimised, production-ready AI performance.
- Everything included in the Starter package
- Advanced AI configuration for optimal performance
- Fine-tuned settings aligned to your specific use case
- Enhanced chatbot behaviour and response quality
- 3 revision rounds included
- Delivered within 7 days
Full-scope AI application development across multiple platforms, including iOS, with ongoing maintenance and comprehensive integration support.
- Everything included in the Boost package
- Cross-platform AI application development
- iOS app development included
- Full integration support for deployment across your systems
- Ongoing maintenance and updates for continued smooth operation
- 5 revision rounds included
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Key details about this service to help you decide. Generated by Zinn Hub, not the seller.
Value Position
Solution Type
Integration Ready
Platform Reach
Ongoing Support
What You'll Receive
Full Description
If your business is ready to harness artificial intelligence but you are not sure where to start — or you need a proper, production-ready solution rather than a generic off-the-shelf tool — this service is built for you.
I develop custom GPTs, AI chatbots and full AI applications tailored precisely to your business needs. Whether you need a customer-facing chatbot that handles enquiries around the clock, a bespoke GPT trained on your content and workflows, or a complete cross-platform AI application with iOS support, this service covers the full spectrum from foundational build to enterprise-grade deployment.
**What you can expect:**
Every engagement begins with understanding your specific requirements. From there, I design, develop and configure an AI solution that slots into your existing systems via API integration — no awkward workarounds, no duct-tape fixes. The result is a reliable, high-performance AI tool that genuinely serves your business rather than adding complexity to it.
**Who this is for:**
This service suits business owners, product teams, startups and enterprises who want a professionally built AI solution without the overhead of hiring a full in-house development team. If you are exploring AI automation, want to improve customer interactions, or need a scalable AI application across web and mobile platforms, this is the right starting point.
**How it works:**
1. Place your order and share your project brief via the order manager.
2. I review your requirements and reach out if any clarification is needed.
3. Development begins — with clear communication throughout.
4. You receive your deliverable within the agreed timeframe, ready to review.
5. Revisions are applied based on your feedback until you are satisfied within the agreed revision count.
**Why choose Zinn Digital™:**
Based in London, England, Zinn Digital™ brings deep expertise in AI development, chatbot architecture and application deployment. The focus is always on solutions that perform reliably and integrate cleanly — not prototypes that look good in a demo but fall over in production. Ongoing maintenance and update support is available at the higher tiers, ensuring your AI investment continues to deliver value long after launch.
Ready to elevate your business with AI? Place your order and let's build something exceptional.
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Compare Packages
| Feature | Starter | Boost | Premium |
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 21 days |
| Revisions | 1 | 3 | 5 |
| Custom GPT development tailored to your business | ✓ | ✕ | ✕ |
| API integration with your existing systems | ✓ | ✕ | ✕ |
| Basic AI chatbot setup to enhance customer interactions | ✓ | ✕ | ✕ |
| Professional configuration for reliable performance | ✓ | ✕ | ✕ |
| 1 revision round included | ✓ | ✕ | ✕ |
| Delivered within 3 days | ✓ | ✕ | ✕ |
| Everything included in the Starter package | ✕ | ✓ | ✕ |
| Advanced AI configuration for optimal performance | ✕ | ✓ | ✕ |
| Fine-tuned settings aligned to your specific use case | ✕ | ✓ | ✕ |
| Enhanced chatbot behaviour and response quality | ✕ | ✓ | ✕ |
| 3 revision rounds included | ✕ | ✓ | ✕ |
| Delivered within 7 days | ✕ | ✓ | ✕ |
| Everything included in the Boost package | ✕ | ✕ | ✓ |
| Cross-platform AI application development | ✕ | ✕ | ✓ |
| iOS app development included | ✕ | ✕ | ✓ |
| Full integration support for deployment across your systems | ✕ | ✕ | ✓ |
| Ongoing maintenance and updates for continued smooth operation | ✕ | ✕ | ✓ |
| 5 revision rounds included | ✕ | ✕ | ✓ |
Extra Information
Why Choose Me
Perfect For
My Process
Frequently Asked Questions
Please share a clear description of what you need the AI solution to do, any systems or platforms it should integrate with, and any relevant background on your business or use case. The more detail you provide, the faster and more accurately I can build your solution. If anything is unclear, I will reach out via the order chat.
Yes. The solutions are built with usability in mind. For ongoing technical management, the Premium tier includes maintenance and update support so you are never left managing complex infrastructure alone.
If you need a custom GPT or chatbot integrated into your existing systems, start with the Starter tier. If you need a more sophisticated, optimally configured AI setup, the Boost tier is the right choice. If you need a full AI application across multiple platforms including iOS, with ongoing support, the Premium tier covers everything.
API integration means connecting your custom GPT or AI chatbot to your existing tools, platforms or workflows so data flows between them seamlessly. The specific systems will depend on your project brief — please include details when placing your order.
Once the initial build is delivered, you review it and submit your consolidated feedback. I apply revisions accordingly. Each tier includes a set number of revision rounds (1 for Starter, 3 for Boost, 5 for Premium). Additional revision rounds can be purchased as an add-on.
Yes. Custom GPTs, chatbots and AI applications can be tailored for a wide range of industries and use cases. Please describe your industry and requirements in your project brief and the solution will be configured accordingly.
The Premium tier includes ongoing maintenance and updates to ensure your AI application continues to operate smoothly after deployment. The scope of this support will be aligned to your project during the order process.
Customer Reviews
See what our customers say about this Zinn
Sergio is a professional who perfectly understands everything to do with AI and also works at an incredible speed.
Sergio is an outstanding programmer. From day one, he has demonstrated exceptional commitment, speed and technical quality. He perfectly understood the project's needs and took it to another level with clean, functional and very well thought-out solutions. He's decisive, proactive and always delivers more than expected. It's a real luxury to have him on the team.
A great professional, dedicated, meticulous and very attentive to detail. 100% recommended.
We're very happy with your work. We commissioned an app from you and everything was perfect. It exceeded our expectations and you helped and guided us to shape and improve the idea we had in mind. 100% recommend.
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