Mobile apps we build
Customer apps, staff tools and focused business applications shaped around a defined workflow, audience and measurable operational need.
Mobile App Development for London & UK Businesses
We plan, design and develop mobile applications for businesses that need a practical customer, staff or operational product on iOS and Android.
The challenge
The problem Mobile App Development solves
Native and cross-platform mobile applications for customer, staff and business workflows across London and the UK.
Our approach
Mobile apps can give customers or staff a focused way to complete important tasks away from a desktop browser. We define the users, workflows, platform choice, backend connections and release scope before development begins, keeping mobile products distinct from broader CRM, ERP, POS, portal and internal-system work.
Mobile app capabilities
From product planning to launch and ongoing development
Custom mobile app development
Bespoke interfaces and functionality are planned around the product rather than forcing a business process into a generic template.
iOS app development
iPhone and iPad experiences can be delivered natively or through an appropriate cross-platform codebase, based on scope and device requirements.
Android app development
Android applications are designed for the agreed devices, operating-system support and Google Play distribution requirements.
Flutter and React Native development
Flutter or React Native can provide one maintainable product codebase for iOS and Android when the required features and integrations suit a cross-platform approach.
Cross-platform vs native apps
We compare user experience, device access, performance, delivery risk and long-term maintenance before recommending native or cross-platform development.
Business, staff and customer applications
Apps can support bookings, customer accounts, field work, staff tasks, approvals, dashboards and other agreed mobile workflows.
Backend systems and APIs
Secure APIs can connect an app to an existing CRM, ecommerce platform or operational backend, subject to available access and documented integration capability.
UX, UI and mobile-first design
Navigation, states, forms, touch targets and core journeys are designed for small screens and real mobile use before development is finalised.
Testing, launch and store support
The agreed scope can include device testing, release preparation and submission support for Apple App Store and Google Play. Store acceptance remains controlled by Apple and Google.
Ownership, handover and maintenance
Projects define source-code ownership, repositories, access and handover. Ongoing maintenance and phased development can be arranged separately after launch.
What's included
- iOS application development
- Android application development
- Flutter development
- React Native development
- Native and cross-platform delivery
- UX and UI design
- API and backend integration
- Authentication and user accounts
- Push notifications
- Payments and ecommerce integration
- Booking workflows
- Dashboards and analytics
- CRM integration
- Staff applications
- Customer applications
- Admin systems
- Testing and release support
- App maintenance and ongoing development
Suitable for
- Small businesses needing focused digital support
Platforms and tools we work with
- iOS
- Android
- Flutter
- React Native
- Laravel APIs
- REST APIs
- Firebase where suitable
- App Store Connect
- Google Play Console
What is not included
Listed so there are no surprises at invoice stage. Anything here can usually still be arranged — it is quoted separately rather than assumed.
- App Store or Google Play approval
- Third-party subscriptions, licences and platform fees
- Device hardware
- Backend, CRM or ecommerce work outside the agreed integration scope
- Unlimited revisions or maintenance
Typical timeline
Delivery depends on product scope, platform choice, integrations, content, testing and store-review requirements. Discovery produces a written phased timeline; no fixed build time is assumed.
Ownership and handover
After agreed fees are paid, the client owns the bespoke source code and original deliverables created for the project, subject to third-party libraries, platform terms, licences and the written agreement. We provide the agreed repositories, access and handover guidance.
Delivery
How this usually runs
01
Discovery and product scope
Define users, business goals, priority journeys, platforms, integrations and the first viable release.
02
UX and technical planning
Map flows, interface states, data, API responsibilities, security considerations and the native or cross-platform approach.
03
Design and prototype
Create mobile-first screens and interactions for review before full implementation.
04
App and backend development
Build the approved application and agreed API, authentication, payment, notification or business-system connections.
05
Testing and acceptance
Test important journeys, supported devices, permissions, integrations and release builds, then resolve agreed acceptance issues.
06
Store preparation and launch
Prepare agreed listings and release files and support submission; Apple and Google independently control review and approval.
07
Handover and ongoing development
Transfer agreed access and source materials, then continue with separately scoped maintenance or product phases where required.
Quick enquiry
Short project brief
We aim to reply within one business day.
Questions about mobile app development
How much does mobile app development cost?+
Cost depends on platforms, screens, workflows, backend requirements, integrations, testing and release scope. We confirm a written scope and GBP price after discovery rather than publishing an unsupported fixed figure.
How long does an app take to build?+
Timescale depends on scope, platform choice, integrations, content, testing and store review. Discovery produces a phased delivery plan; no fixed timescale applies to every app.
Do you build both iOS and Android apps?+
Yes. We can build for iOS and Android using native or suitable cross-platform technology according to the agreed product requirements.
Should I choose Flutter, React Native or native development?+
The choice depends on device features, performance, user experience, existing technology and maintenance needs. We recommend an approach after technical discovery rather than treating one framework as universally best.
Can an app connect to an existing CRM or backend?+
Yes, where the existing system provides suitable access or APIs. We review authentication, data ownership, rate limits, security and integration scope before confirming delivery.
Who owns the source code?+
After agreed fees are paid, the client owns bespoke source code and original deliverables created for the project, subject to third-party licences, platform terms and the written agreement.
Can you publish apps to the App Store and Google Play?+
We can support release preparation and submission where included in scope. Apple and Google control developer-account eligibility, review, approval and ongoing store availability.
Do you provide ongoing app support?+
Yes. Maintenance, monitoring, compatibility updates and further product phases can be agreed separately after the included handover or support period.
Can you build an app for a business based in London?+
Yes. We work with businesses across London and the wider UK through an agreed remote or project-specific arrangement. This page does not represent a London office.
Published apps by Xapner
Published Apps by Xapner
Real applications published through Xapner’s official Apple App Store and Google Play developer profiles.
Mobile food ordering
Grill & Thrill
iOS and Android
Published iOS and Android ordering app with menus, options, cart, checkout, delivery, collection and order tracking.
Productivity application
Done-Yet?
iOS and Android
Published reminder app designed to keep asking until an important task is explicitly confirmed as done.
Business integration application
Xapner PrintBridge
Android
Published Android app for discovering and connecting printers used in POS and other business printing workflows.
Next step
Ready to start with Mobile App Development?
Share your goals and we will recommend a practical scope, timeline and next step.
No purchase required
Ready to Build Your Mobile App?
Tell us what you want to build, who will use it and which systems it needs to connect with. Xapner can help plan the right iOS, Android or cross-platform solution.