Get a professionally built Flutter mobile app for iOS and Android — with AI integration, clean source code, and store-ready delivery from a London-based studio with 10+ years of experience.
I Will Build Your Cross-Platform Flutter Mobile App for iOS & Android
A small-scale Flutter app with up to 4 screens, AI integration, and full source code — ideal for MVPs and proof-of-concept builds.
- Flutter app for both iOS and Android (up to 4 screens)
- Integration of one AI model into the app
- Full source code included
- Basic UI built to your brief
- 1 round of revisions
- Guidance on app store submission
A mid-scale Flutter app with up to 10 screens, backend integration, AI model, and store submission — suited to early-stage products ready for launch.
- Flutter app for both iOS and Android (up to 10 screens)
- Integration of one AI model into the app
- Backend integration (Firebase or REST API connection)
- Full source code included
- App Store and Google Play submission support
- 2 rounds of revisions
A full-scale Flutter app with up to 20 screens, custom backend, payment gateway, AI integration, and complete store deployment — for serious product launches.
- Flutter app for both iOS and Android (up to 20 screens)
- Integration of one AI model into the app
- Custom backend development (Node.js, Laravel, Python, or Firebase)
- Payment gateway integration (e.g. Stripe, PayPal, Apple Pay)
- Full source code included with clean project structure
- Full App Store and Google Play submission handled — 3 rounds of revisions
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Value Position
Framework
Backend Options
Store Submission
Source Code
What You'll Receive
Full Description
Your app idea deserves more than a template. It deserves a clean, scalable, store-ready product built by developers who have been doing this for over a decade.
Zinn Digital is a London-based mobile development studio specialising in Flutter — Google's cross-platform framework that lets us build one codebase that runs beautifully on both iOS and Android. Flutter is our primary stack, and we know it deeply: from state management and custom UI to backend integration and App Store submission.
Every package includes a functional iOS app, a functional Android app, full source code handover, and the option to integrate an AI model — whether that is a chatbot, a recommendation layer, or a voice assistant. You own what we build.
**What we build:**
We have experience across a wide range of app categories — dating apps, on-demand delivery apps, fitness and wellness apps, taxi booking apps, e-commerce apps, finance apps, and AI-powered custom tools. If you have a concept, we can scope it.
**How the process works:**
After you place your order, share your project brief via the order chat — app concept, target audience, any existing brand assets or API credentials, and your preferred platform priorities. We will review your requirements, confirm scope, and begin development. We keep communication clear throughout, and revisions are handled through the order manager.
**Backend and integrations:**
Where your project requires a backend, we work with Node.js, Laravel, Python, and Firebase. We can integrate payment gateways (Stripe, PayPal, Apple Pay, Google Pay), maps, push notifications, CRMs, and third-party APIs. These are available as part of larger scopes — discuss your needs before ordering so we can confirm what fits your chosen tier.
**Store submission:**
We handle app submission, store compliance checks, and optimisation for both Google Play and the Apple App Store. Whether you are launching for the first time or updating an existing listing, we know the process.
**Maintenance and long-term support:**
We offer ongoing app maintenance, feature updates, bug fixes, and OS compatibility upgrades. If you need a long-term development partner, we are happy to discuss a continued arrangement after delivery.
**Who this is for:**
Startups validating an MVP, small businesses building their first app, and established companies adding a mobile layer to an existing product. If you are unsure which tier suits your project, send a message before ordering — we would rather scope it correctly from the start.
Choose your tier below and let's get building.
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Compare Packages
| Feature | Starter | Boost | Premium |
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 30 days |
| Revisions | 1 | 2 | 3 |
| Flutter app for both iOS and Android (up to 4 screens) | ✓ | ✕ | ✕ |
| Integration of one AI model into the app | ✓ | ✓ | ✓ |
| Full source code included | ✓ | ✓ | ✕ |
| Basic UI built to your brief | ✓ | ✕ | ✕ |
| 1 round of revisions | ✓ | ✕ | ✕ |
| Guidance on app store submission | ✓ | ✕ | ✕ |
| Flutter app for both iOS and Android (up to 10 screens) | ✕ | ✓ | ✕ |
| Backend integration (Firebase or REST API connection) | ✕ | ✓ | ✕ |
| App Store and Google Play submission support | ✕ | ✓ | ✕ |
| 2 rounds of revisions | ✕ | ✓ | ✕ |
| Flutter app for both iOS and Android (up to 20 screens) | ✕ | ✕ | ✓ |
| Custom backend development (Node.js, Laravel, Python, or Firebase) | ✕ | ✕ | ✓ |
| Payment gateway integration (e.g. Stripe, PayPal, Apple Pay) | ✕ | ✕ | ✓ |
| Full source code included with clean project structure | ✕ | ✕ | ✓ |
| Full App Store and Google Play submission handled — 3 rounds of revisions | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Build a Professional Flutter iOS & Android Mobile App
Build Your Cross-Platform Flutter Mobile App for iOS & Android
Extra Information
Why Choose Me
Tools I Use
Perfect For
Frequently Asked Questions
Our primary framework is Flutter, which produces a single codebase that runs natively on both iOS and Android. It delivers excellent performance, a consistent UI across platforms, and faster development cycles. If your project has specific requirements that suit a different approach, get in touch before ordering and we can discuss the best fit.
Please share your app concept, target audience, any existing brand assets (logos, colours, fonts), API credentials or third-party service accounts you want integrated, and your preferred platform priorities. The more context you provide upfront, the faster we can begin. We will follow up via the order chat if we need anything else.
Once we deliver your app, you review it and submit your revision requests through the order chat. Each tier includes a set number of revision rounds — a round covers a consolidated list of changes rather than individual back-and-forth requests. Additional revisions can be purchased as an add-on if needed.
The Starter tier focuses on the front-end Flutter app with up to 4 screens and one AI model integration. Backend development and API integration are included from the Boost tier upwards. If your Starter-tier project needs a backend, please message us before ordering so we can advise on the right package.
Yes — we have experience building apps across categories including on-demand delivery, ride-booking, dating, fitness, e-commerce, and finance. These are typically larger-scope projects. We recommend the Boost or Premium tier as a starting point, and we are happy to discuss your specific requirements before you order.
Yes. We handle the full submission process including store compliance checks, metadata, and optimisation for both the Apple App Store and Google Play. This is included from the Boost tier onwards and available as an add-on for the Starter tier.
Yes. We offer post-launch maintenance covering bug fixes, OS compatibility updates, and feature additions. A 14-day post-launch support window is available as an add-on. For longer-term arrangements, get in touch via the order chat after delivery and we can discuss ongoing support options.
We integrate a range of payment providers including Stripe, PayPal, Apple Pay, and Google Pay, with support for subscriptions, one-click checkout, and multi-currency. Payment gateway integration is included in the Premium tier and can be discussed as an extension for the Boost tier.
Customer Reviews
See what our customers say about this Zinn
Very quick to deliver and as per expectations. He is going to be my go to developer for any sort of app development work.
A developer who should be in your team – that's how we feel about having him as an extended version of our team.
Neil seems to be a dependable developer for us now as the speed and accuracy with which he has delivered the tasks is amazing.
one of the most reliable experts in flutter
Hasnain Elahi exceeded my expectations with his professional work in mobile app development. He went above and beyond, delivering on time and being highly cooperative throughout. Highly recommend, he's a true gem in his field!
It was just a simple test task that I assigned to see if we could work together, but Neil nailed it. I'm assigning more tasks to him. So far, impressive!
Hasnain Elahi truly impressed us with his outstanding mobile app development skills, exceeding all expectations. Working with him was a breeze, thanks to his proactive communication and dedication to going above and beyond. Highly recommend!
We're enjoying working with Neil as the tasks assigned are completed in the desired manner in no time. So far, it's going very well with him.
Cool guy and focused on his job
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