Get a polished, cross-platform Flutter app — built for iOS and Android — with AI integration, authentication, and full source code delivered by a London-based development team.
I Will Build Your iOS & Android Flutter App with AI Integration
A clean, functional single-screen iOS & Android app built from your idea, with AI integration and full source code.
- Functional iOS & Android app (Flutter)
- 1-screen app design & development
- AI model integration into the app
- User authentication included
- Full source code delivered
- Unlimited revisions
Everything in AppSpark plus intelligent chatbot integration for a more engaging, automated user experience.
- Everything in AppSpark included
- AI chatbot integration built into the app
- Functional iOS & Android app (Flutter)
- User authentication included
- Full source code delivered
- Unlimited revisions
The complete package — chatbot, fine-tuned AI model, and full application & website UI/UX design included.
- Everything in Boost included
- AI model fine-tuning for your specific business context
- Full application & website UI/UX design (Figma)
- Functional iOS & Android app (Flutter)
- Full source code delivered
- Unlimited revisions
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Value Position
Tech Stack
AI Integration
Delivery & Revisions
Source Code & Ownership
What You'll Receive
Full Description
Still searching for a developer you can actually trust to deliver a clean, working app — not a half-finished build full of bugs and broken promises?
Zinn Digital ™ is a professional Flutter development team based in London, England. We build high-performing, cross-platform mobile applications for iOS and Android that are smooth, scalable, and ready for the real world. Whether you need a bespoke SaaS solution, an AI-powered chatbot app, or a clone app with your own branding and features, we deliver production-quality code that holds up under pressure.
Every app we build includes functional iOS and Android apps from a single Flutter codebase, user authentication, AI model integration, and full source code handed directly to you. You own everything we build.
Our entry-level AppSpark package is designed for founders and entrepreneurs who have a clear single-screen concept and want a fast, clean proof of concept or MVP delivered in three days — with unlimited revisions until it is exactly right.
For teams that need more, our Boost package adds intelligent chatbot integration on top of the core build, giving your app a conversational layer that improves user engagement and automates common interactions. This is the right choice if you want an app that does more than display information — it actually responds and assists your users.
Our Premium package goes further still, layering in AI model fine-tuning so the intelligence inside your app is shaped specifically to your business context, plus full application and website UI/UX design using Figma. This is the complete end-to-end solution for a serious product launch.
Our tech stack covers Flutter and React Native on the frontend; Node.js, PHP, Laravel, Express.js, and Python on the backend; and MongoDB and MySQL for data. We build with VS Code, Android Studio, Xcode, Figma, and GitHub — tools chosen for reliability and clean, maintainable output.
We also handle App Store and Google Play deployment, admin panel and dashboard development, API integration, and cloud-based functionality — all drawn from a single, experienced team with transparent communication throughout.
This service is ideal for startup founders validating a product idea, business owners adding a mobile channel to an existing service, SaaS entrepreneurs who want a scalable app architecture from day one, and anyone who has been let down by a previous developer and needs a team that actually delivers.
Send us a message with your idea and we will tell you exactly what we can build for you.
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Compare Packages
| Feature | AppSpark | Boost | Premium |
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
| Revisions | unlimited | unlimited | unlimited |
| Functional iOS & Android app (Flutter) | ✓ | ✓ | ✓ |
| 1-screen app design & development | ✓ | ✕ | ✕ |
| AI model integration into the app | ✓ | ✕ | ✕ |
| User authentication included | ✓ | ✓ | ✕ |
| Full source code delivered | ✓ | ✓ | ✓ |
| Unlimited revisions | ✓ | ✓ | ✓ |
| Everything in AppSpark included | ✕ | ✓ | ✕ |
| AI chatbot integration built into the app | ✕ | ✓ | ✕ |
| Everything in Boost included | ✕ | ✕ | ✓ |
| AI model fine-tuning for your specific business context | ✕ | ✕ | ✓ |
| Full application & website UI/UX design (Figma) | ✕ | ✕ | ✓ |
Extra Information
Why Choose Me
Tools I Use
Perfect For
Frequently Asked Questions
Share your app idea, any reference apps or designs you like, and any login credentials or project details we will need. The more context you give us, the faster we can move. If we need anything else, we will reach out via the order chat.
AppSpark is ideal if you have a single-screen concept and want a fast, clean MVP with AI integration. Boost adds chatbot functionality for a more interactive experience. Premium is the full solution — fine-tuned AI, chatbot, and complete UI/UX design included.
Yes, absolutely. Full source code is included in every package. You own everything we build for you.
All packages include unlimited revisions. Once we deliver a build, you review it and share your feedback via the order chat. We continue iterating until you are satisfied with the result.
Yes. AI chatbot integration is included in the Boost and Premium packages. For the Premium package, we also fine-tune the underlying AI model to your specific business use case, making the chatbot smarter and more relevant to your users.
Yes, we can manage the full deployment process for both platforms. This is available as an add-on. You will need to provide your developer account credentials for us to submit on your behalf.
The packages have fixed delivery times of 3, 5, and 7 days for their defined scope. For larger or more complex projects — such as full SaaS platforms — we will discuss the timeline before you place the order so there are no surprises.
Yes. We can build a fully functional clone of an existing app and enhance it with new features and custom branding. Share the app you have in mind and we will confirm the scope.
Customer Reviews
See what our customers say about this Zinn
Honestly, I couldn’t have asked for a better developer. They turned my app idea into a fully functional product with a beautiful interface. Everything works perfectly, and the process was super smooth. Highly recommended!
Working with this developer was an amazing experience! The app features are seamless and extremely functional. I’m thrilled with how innovative and user-friendly the final product is.
Honestly, I was nervous at first since this was my first app project, but the developer made it completely stress-free. Communication was clear, timelines were met, and the final result looks professional and runs perfectly!
I was a bit nervous at first as this was my first app project, but the developer completely impressed me. The app works flawlessly, and communication was smooth throughout. I'm extremely happy with the result and would definitely recommend their services!
I'm extremely satisfied with my mobile app! It's user-friendly, reliable, and looks professional. The developer's attention to detail and professionalism made the project stress-free.
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