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At a Glance

Key details about this service to help you decide. Generated by Zinn Hub, not the seller.

Delivery Speed

MVP in 1 Day
The Basic package promises a functional single-page AI app with backend agents delivered within 1 day, with Boost and Premium upgrades extending to 3–5 days for more complex builds.

AI Integration Depth

Agent-Powered Backend
Goes beyond simple AI model embedding — this service wires LLM agents into the backend to handle automated workflows and actions, not just chat or text generation.

Upgrade Path

Fine-Tuning & Chatbot on Higher Tiers
AI model fine-tuning and chatbot integration are only available on Boost and Premium upgrades, so buyers needing those features should factor in the additional cost from the $119 base.

Deliverables Included

Source Code + Web & Desktop App
All tiers include full source code ownership, a functional web app, and a desktop application — plus cloud hosting and deployment options are referenced for scaling beyond the MVP stage.

What You'll Receive

Formats:
Source Files
Digital Files
Written Report
Delivery Method:
Order Manager
Notes: Your completed web application and full source code will be delivered via the order manager. A brief written summary of the build — covering key components, how to run the application, and any configuration steps — is included with every delivery. All files are packaged clearly and labelled for straightforward handover.

Full Description

If you need a working AI-powered web application — not a template, not a no-code workaround — this service delivers a genuinely custom build with intelligent backend agents that automate real tasks and decisions for your users.

Zinn Digital™ is a London, England-based development team with over seven years of hands-on experience in AI, automation, and full-stack web development. We build bespoke applications for startups and growing businesses that need to move fast without sacrificing quality or scalability.

**What this service delivers**

At its core, this is an AI-integrated web application built to your specification. A large language model (LLM) is woven into the backend so your app can reason, respond, and act — not just display static content. Backend agents handle automated actions: whether that means processing user inputs, triggering workflows, generating content, analysing data, or orchestrating multi-step tasks without human intervention. You receive full source code with every order.

As the scope scales across tiers, we layer in chatbot interfaces for conversational user experiences, and advanced prompt engineering and retrieval-augmented generation (RAG) to tailor AI behaviour tightly to your domain — delivering the specialisation that makes your product feel genuinely intelligent rather than generic.

**How the process works**

After your order, you share your project brief via the order chat — what the app should do, any existing systems to connect to, login credentials where needed, and any design preferences. We review the brief, confirm scope, and begin development. You'll receive regular updates through the order chat, and structured revision rounds are included to ensure the final product matches your requirements.

**Who this is for**

This service suits founders validating an AI product idea and needing a working MVP quickly; product teams integrating LLM capabilities into an existing web platform; and businesses building a proprietary AI-driven tool — such as an internal assistant, an automated data-processing interface, or a customer-facing chatbot product.

**Why Zinn Digital™**

Our team combines specialist AI engineering with practical full-stack delivery. We work exclusively with genuine custom builds — every project is scoped from your brief, not repurposed from a previous codebase. We are based in London and communicate clearly in English throughout. Source code is always included, so you own what we build outright.

Ready to turn your AI concept into a working product? Place your order and let's build it.

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Compare Packages

FeatureMVPGrowthFull Build
Delivery Time5 days10 days21 days
Revisions235
Single-page AI-powered web application built to your brief
LLM integrated into the backend for intelligent automated actions
Backend agent logic for task automation (e.g. content generation, data processing)
AI model connected to your app via API
Full source code delivered
2 rounds of structured revisions
Everything in MVP, expanded for broader functionality and user flows
Conversational chatbot interface integrated into the web application
Domain-specific AI behaviour via advanced prompt engineering and RAG configuration
Multi-step backend agent workflows for more complex automation scenarios
AI model API integration with context-aware response handling
Full source code delivered with 3 rounds of structured revisions
Everything in Growth, built for production-grade scale and complexity
Full-scope AI web application engineered for growth and future expansion
Advanced chatbot integration with custom conversation flows
Sophisticated multi-agent backend architecture for complex automated workflows
Deep domain optimisation via prompt engineering, RAG, and system-prompt customisation
Full source code delivered with 5 rounds of structured revisions

Extra Information

Why Choose Me

Experience:7+ years in AI, automation, and full-stack web development
Location:London, England — English-speaking team throughout
What makes us different:Every application is built from scratch to your brief. We do not repurpose templates or recycle previous codebases. Source code is always included and you own it outright on delivery.

My Process

Step 1 — Brief:You share your project requirements, goals, and any existing systems via the order chat
Step 2 — Scope Confirmation:We review your brief, clarify any open questions, and confirm the build plan before development begins
Step 3 — Development & Updates:We build your application and provide progress updates through the order chat
Step 4 — Delivery & Revisions:We deliver the working application and source code, then work through your structured revision rounds until you are satisfied

Perfect For

Ideal clients:Startup founders validating an AI product idea with a working MVP Product teams adding LLM capabilities to an existing web application Businesses building a proprietary AI tool such as an internal assistant or automated data-processing interface Anyone who needs a genuine custom build rather than a no-code or template-based workaround

Frequently Asked Questions

You will need to share a description of what you want the application to do, any existing systems or APIs it should connect to, login credentials for platforms we need access to, and any design preferences or brand guidelines. The more detail you provide upfront, the faster and more accurately we can build to your requirements.

A backend agent is a piece of logic powered by a large language model (LLM) that can reason and take actions automatically — for example, processing a user's input, deciding what to do next, calling an external API, generating content, or analysing data. Rather than just displaying AI-generated text, your application can act on it.

True model fine-tuning requires large proprietary datasets, significant compute resource, and extended iteration cycles — it is a substantial undertaking beyond the scope of this service. What we deliver in the Growth and Full Build tiers is advanced prompt engineering and retrieval-augmented generation (RAG): your AI is given precise instructions and relevant context so it responds in a way that is tightly aligned with your domain, product, and users. For the vast majority of applications, this delivers excellent results without the cost and complexity of fine-tuning.

Yes. Full source code is included with every tier. Once the order is complete and delivered, the code belongs to you entirely.

Revisions are structured rounds. You review the delivered application, compile your feedback, and submit it in one batch. We address all items in that round and re-deliver. Each tier includes a defined number of rounds (2 for MVP, 3 for Growth, 5 for Full Build). Revisions cover adjustments within the agreed scope — they are not opportunities to add new features, which would be quoted separately.

If you need a working proof-of-concept or minimum viable product to validate an idea, start with MVP. If you need a user-facing chatbot and more sophisticated AI behaviour alongside the core application, Growth is the right choice. If you are building a production-ready, scalable AI product with complex workflows and multiple integrated components, choose Full Build.

Yes. Integration of an AI model into an existing application is included across all tiers. Please share details of the platform and any APIs involved when you submit your project brief so we can confirm compatibility and scope before work begins.

We review your brief carefully before beginning work and will raise any scope questions via the order chat early in the process. If requirements expand beyond what was originally agreed, we will discuss options transparently with you before proceeding. Surprises are far less likely when a detailed brief is provided at the outset.

Customer Reviews

See what our customers say about this Zinn

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The automation service provided by Jacques using ChatGPT is simply outstanding. His technical expertise and ability to meet specific needs exceeded our expectations. Thanks to him, our process is now more efficient and productive. A huge thank you for his exceptional professionalism!

Jacques is one of ours now, you can hire him for Laravel projects, he's really good. I highly recommend him!

Jacques is a competent person who quickly understands needs. I will definitely go back to him and I advise you to take this extraordinary service that optimises work. Top notch, thank you very much, Jacques.

It was a pleasure working with Jacques. I love that he codes in a very professional way, and everything is very clean and easy to understand. I'm looking forward to working with him on various other projects. Thank you.

Great work again. This was my second time working with this coder. Looking forward to more business if / when needed.

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