Transform your idea into a working AI-powered product — from a proof-of-concept prototype to a fully fine-tuned, cross-platform application built on Flutter, Python and advanced AI architecture by a London-based agency with 7+ years of experience.
I Will Build Your AI Mobile App, Website or Chatbot
A proof-of-concept AI integration: 3 app screens or 1 web page, fully functional on iOS and Android.
- 3 static app screens OR a single web page
- Essential AI model integration for proof of concept
- Functional iOS and Android app (Flutter)
- User authentication included
- Full source code delivered
- 100% IP ownership transferred to you
A fully designed, chatbot-integrated AI application with fine-tuned AI model and unlimited revisions.
- Everything in Starter, at expanded scope
- Custom application and website UI/UX design
- AI model fine-tuning to your data and requirements
- Chatbot integration for automated customer interactions
- Functional iOS and Android app (Flutter) with authentication
- Full source code and 100% IP ownership transferred
A production-grade, complex AI platform — full design, fine-tuning, chatbot and maximum delivery scope.
- Everything in Professional, with full production-grade scope
- Complex AI system architecture and custom LLM fine-tuning
- Full cross-platform app and web design (iOS, Android, web)
- Advanced chatbot and AI agent integration
- Security-first build: 99.9% uptime target, PCI-compliance standards
- Full source code and 100% IP ownership transferred
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Value Position
Tech Stack
Entry Delivery
Source Code Ownership
Proven AI ROI
What You'll Receive
Full Description
You have an idea that deserves more than a slide deck. What you need is a working, stable, AI-powered product — one built by engineers who have shipped real solutions that save real money.
Zinn Digital is a London-based AI development agency on a mission to turn ambitious ideas into production-ready AI platforms. With over seven years of collective experience in full-stack and AI development, the team specialises in mobile apps, web applications, chatbots, AI agents and SaaS products — built using Flutter, Python, Node.js, TensorFlow, PyTorch and GPT-4.
This is not consultancy theory. An AI chatbot built by the team resolves 70% of customer queries instantly, saving one client over £250,000 annually and cutting service costs by 35%. A route-optimisation AI mobile app made drivers 50% more efficient and reduced driving distance by 18%. Every solution is engineered for 99.9% uptime, security, PCI compliance and full cross-platform compatibility from day one.
**What is included across all tiers:**
— Functional iOS and Android app (cross-platform, built with Flutter for native performance)
— Core AI model integration
— User authentication
— Full source code delivered to you — you own 100% of the IP upon completion
The entry-level Starter tier delivers three static app screens or a single web page with essential AI model integration: a working proof of concept, ready in four days. The Professional tier scales up to a fully designed, chatbot-integrated application with AI model fine-tuning, unlimited revisions and a 14-day delivery. The Full Build tier includes everything in Professional, with extended scope and delivery time for complex, production-grade AI systems.
**How it works:**
1. Place your order and complete the requirements form.
2. The team reviews your brief and opens a dialogue in the order chat if anything further is needed.
3. Development begins immediately, with progress updates shared throughout.
4. You review the delivery and request revisions within your allowance.
5. Final source code and all files are transferred to you on completion.
**This service is ideal for:**
— Startups validating an AI-powered idea quickly
— Businesses wanting to automate customer service or internal workflows
— Product owners needing a cross-platform mobile or web AI application
— Founders ready to build a proprietary AI model their competitors cannot replicate
The team integrates OpenAI models, custom LLM agents, predictive models, computer vision and data classification — whatever your use case demands. If you already have a proprietary model or API, it can be integrated directly.
Ready to engineer your next AI product? Place your order and let's build something remarkable.
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Compare Packages
| Feature | Starter | Professional | Full Build |
|---|---|---|---|
| Delivery Time | 4 days | 14 days | 21 days |
| Revisions | 3 | unlimited | unlimited |
| 3 static app screens OR a single web page | ✓ | ✕ | ✕ |
| Essential AI model integration for proof of concept | ✓ | ✕ | ✕ |
| Functional iOS and Android app (Flutter) | ✓ | ✕ | ✕ |
| User authentication included | ✓ | ✕ | ✕ |
| Full source code delivered | ✓ | ✕ | ✕ |
| 100% IP ownership transferred to you | ✓ | ✕ | ✕ |
| Everything in Starter, at expanded scope | ✕ | ✓ | ✕ |
| Custom application and website UI/UX design | ✕ | ✓ | ✕ |
| AI model fine-tuning to your data and requirements | ✕ | ✓ | ✕ |
| Chatbot integration for automated customer interactions | ✕ | ✓ | ✕ |
| Functional iOS and Android app (Flutter) with authentication | ✕ | ✓ | ✕ |
| Full source code and 100% IP ownership transferred | ✕ | ✓ | ✓ |
| Everything in Professional, with full production-grade scope | ✕ | ✕ | ✓ |
| Complex AI system architecture and custom LLM fine-tuning | ✕ | ✕ | ✓ |
| Full cross-platform app and web design (iOS, Android, web) | ✕ | ✕ | ✓ |
| Advanced chatbot and AI agent integration | ✕ | ✕ | ✓ |
| Security-first build: 99.9% uptime target, PCI-compliance standards | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Build Your AI Mobile App, Website or Chatbot
Build Your AI Mobile App, Website or Chatbot
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Frequently Asked Questions
Please share your project brief — this includes your goals, any existing app or API credentials, design references if you have them, and details of the AI model or data you want integrated. The more context you provide, the faster the team can begin. If anything further is needed, the team will follow up via the order chat.
If you need a quick proof of concept or a single-page integration to validate your idea, the Starter tier is the right starting point. If you need a fully designed, chatbot-enabled application with a fine-tuned AI model, the Professional tier is recommended. For complex, multi-feature production systems requiring advanced AI architecture, the Full Build tier covers you end to end.
Yes. The team is experienced with TensorFlow, PyTorch, Python and custom API endpoints, and can integrate your existing proprietary models directly. You are not limited to any specific AI provider — OpenAI, open-source LLMs or your own trained models are all supported.
Yes. All mobile development uses Flutter, which delivers native performance and a consistent user experience on both iOS and Android from a single codebase — saving both time and ongoing maintenance costs.
You do. Upon final delivery, 100% of the source code and intellectual property is transferred to you. The team acts purely as the engineers bringing your vision to life — ownership is entirely yours.
Solutions are built on enterprise-grade cloud infrastructure with comprehensive testing protocols. Security practices adhere to industry standards including PCI compliance, and applications are engineered with a 99.9% uptime target from the outset.
The team integrates a wide range of AI capabilities: custom LLM agents, predictive and recommendation models, computer vision for image analysis, data classification systems, and route-optimisation AI. The goal is always to build features that generate measurable revenue or operational savings.
After each delivery, you review the work and submit your feedback via the order chat. The Starter tier includes three revision rounds. The Professional and Full Build tiers include unlimited revisions, ensuring the final product meets your requirements precisely before handover.
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