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Mobile app development for iOS and Android, built to be used daily

Backendz builds iOS and Android apps for customers and for teams in the field: fast, offline-ready and connected to the systems you already run. We handle the build, the App Store and Google Play release, and the updates after.

Or see how we engage first — four shapes, no sales call required.

  • iOS apps
  • Android apps
  • Cross-platform apps
  • Field service apps
  • Customer apps
  • Offline mode
  • Push notifications
  • Camera & photo capture
  • Signatures
  • GPS & location
  • Barcode & QR scanning
  • In-app payments
  • Biometric login
  • App Store publishing
  • Google Play publishing
  • Over-the-air updates

Why build mobile app development with us?

Built for the field

Our own apps, like ShiftTracker, are used by staff on sites with poor signal, so offline mode and simple screens are standard, not extras.

Connected to your back office

We build the app and the system behind it, so data flows straight into your operations software.

Store-ready from day one

We handle App Store and Google Play publishing, review guidelines and release management, under your own developer accounts.

Supported after launch

OS updates, new devices and new features handled by the team that built it.

We buildMobile App Development

How we engage

Four ways this usually starts

Most enquiries land in one of these. If yours does not, say so on the call — we would rather shape the engagement than sell you the nearest shape we have.

Most teams start here

Your team works away from a desk

Typical timeline: 10–14 weeks

  • Field app for jobs, inspections, timesheets or deliveries
  • Photos, signatures and GPS captured on the spot
  • Works offline and syncs back automatically

Best for: facilities, security, construction and service teams

Your customers need an app

  • Customer app for bookings, orders, accounts or alerts
  • Push notifications and secure login
  • Published to the App Store and Google Play

Best for: service businesses and product companies

Your web platform needs a mobile companion

  • Mobile app built on your existing platform and data
  • Key features redesigned for small screens
  • Shared logins and permissions

Best for: SaaS and operations platforms going mobile

Your current app needs fixing

  • Audit of performance, crashes and reviews
  • Fixes, updates and store compliance
  • Ongoing support and new features

Best for: teams with an ageing or unsupported app

Case studies

Ideas that became systems in production

Every card is a build we shipped and still support. Open one for the decisions behind it.

We serve the best in the industry

Scope

All of it, written down

What falls inside this service. Nothing here is an upsell discovered later.

What we build

  • field service apps
  • inspection and audit apps
  • customer apps
  • booking and ordering apps
  • monitoring and alert apps
  • companion apps for web platforms

Device features

  • offline storage and sync
  • camera and photos
  • signatures
  • GPS
  • barcode and QR scanning
  • push notifications
  • biometric login

Release and support

  • App Store and Google Play publishing
  • TestFlight and beta testing
  • crash reporting
  • analytics
  • OS and device updates

Stack

  • iOS (Swift)
  • Android (Kotlin)
  • React Native
  • Flutter
  • .NET APIs
  • Firebase
  • PostgreSQL
  • Azure

How it works

  1. We agree who uses it, where, and the handful of tasks it must make effortless.

Planning session with notes on the wall
Testimonials

The people who have to live with what we build

Operations directors, CTOs and plant managers — the ones still using the system a year after the invoice cleared.

5.0
Operations manager holding a tablet in a bright logistics officeFreight operator · 14 depots
We wanted answers our team could check against the original document. Having the relevant clause beside the response makes the assistant useful when reviewing policies and contracts.
Emma CollinsHead of Business Operations at Clearbrook Advisory
We needed scheduling, availability and shift changes in one place. Backendz shaped the system around the way our operations team works and stayed involved after launch to help us refine it.
James CarterOperations Director at Northbridge Facilities
Our rental journey had to work for both vehicle owners and travellers. Backendz brought listings, availability and bookings together into a platform that feels straightforward to use.
Sophie BennettCo-founder at Roamway Rentals

Ask for references and we will put you on a call with the team that runs the system — not a case study PDF.

References available on request

We wanted a practical way to review PPE and safety-zone events using our existing cameras. The team focused on the situations our site managers need to investigate and made the footage easier to review.
Daniel BrooksSite Operations Manager at Oakmere Construction
A single headcount does not tell us where congestion is developing. The zone-based view gives our team a clearer picture of how people are moving and where attention may be needed.
Olivia ReedVenue Operations Director at Cedarhall Events
The priority was a counting workflow our warehouse team could use during a normal shift. Backendz connected image-based counts with the records we already use and made discrepancies easier to review.
Michael TurnerWarehouse Manager at Harbourline Logistics
Tender preparation involves gathering evidence and getting the right people to review each section. Backendz brought those steps into one workspace, with drafts our team can check and approve.
William ParkerBid Manager at Westhaven Technical Services
Our information was spread across several operational systems. Backendz designed a clearer way to ask questions, inspect the supporting evidence and keep approval with our team before an action is taken.
Charlotte HayesChief Operating Officer at Elmbridge Services Group
Our estimating process needed to reflect how we actually price work. Backendz took time to understand the inputs and rules, then built a quoting journey our team could review and refine.
Thomas MitchellManaging Director at Ridgewell Roofing & Cladding
The reconciliation workflow gives our finance team one place to review mismatches and supporting records. We can trace an exception back to its source and decide what needs attention.
Henry WilsonFinance Director at Ashford Distribution
The team took time to understand how our staff work between appointments. The resulting system brings scheduling and client information together without making the day more complicated.
Amelia FosterHead of Operations at Meadowcrest Care
We had outgrown the spreadsheets that held our pricing rules. Backendz helped turn that knowledge into a quoting tool we can maintain and explain to new colleagues.
George EvansManaging Director at Stonefield Fabrication
We could review working features throughout the build and give specific feedback. That made it easier to keep the product focused on the people using it.
Isabel MorganProduct Director at Brightpath Learning
Connecting our sales and inventory systems was the priority. The integration gives our team a clearer view of updates and a practical way to investigate records that need review.
Jack HarrisonTechnology Manager at Westbrook Retail
Our field team needed access to job details away from the office. The mobile workflow keeps the relevant information close at hand and gives the office a clearer view of progress.
Grace PhillipsOperations Lead at Alderway Field Services
The cloud work started with understanding our existing systems and dependencies. The team documented the setup and gave us a clearer basis for monitoring and ongoing maintenance.
Oscar BennettIT Director at Brookvale Manufacturing
We wanted a client portal that reflected how we deliver our services. Backendz brought documents, requests and progress updates into a straightforward experience for clients and staff.
Lily ThompsonCommercial Director at Willowbank Consulting
The engineers worked alongside our team and explained their decisions clearly. Code reviews and practical documentation helped us stay involved throughout delivery.
Freddie ClarkeHead of Engineering at Redwood Energy Services
Our teams were entering the same information into several tools. Backendz mapped the process with us and built a more connected workflow with clear review points.
Alice CooperBusiness Systems Manager at Fairhaven Property Group
Operations manager holding a tablet in a bright logistics officeFreight operator · 14 depots
We wanted answers our team could check against the original document. Having the relevant clause beside the response makes the assistant useful when reviewing policies and contracts.
Emma CollinsHead of Business Operations at Clearbrook Advisory
Our rental journey had to work for both vehicle owners and travellers. Backendz brought listings, availability and bookings together into a platform that feels straightforward to use.
Sophie BennettCo-founder at Roamway Rentals
A single headcount does not tell us where congestion is developing. The zone-based view gives our team a clearer picture of how people are moving and where attention may be needed.
Olivia ReedVenue Operations Director at Cedarhall Events
Tender preparation involves gathering evidence and getting the right people to review each section. Backendz brought those steps into one workspace, with drafts our team can check and approve.
William ParkerBid Manager at Westhaven Technical Services
Our estimating process needed to reflect how we actually price work. Backendz took time to understand the inputs and rules, then built a quoting journey our team could review and refine.
Thomas MitchellManaging Director at Ridgewell Roofing & Cladding
The team took time to understand how our staff work between appointments. The resulting system brings scheduling and client information together without making the day more complicated.
Amelia FosterHead of Operations at Meadowcrest Care
We could review working features throughout the build and give specific feedback. That made it easier to keep the product focused on the people using it.
Isabel MorganProduct Director at Brightpath Learning
Our field team needed access to job details away from the office. The mobile workflow keeps the relevant information close at hand and gives the office a clearer view of progress.
Grace PhillipsOperations Lead at Alderway Field Services
We wanted a client portal that reflected how we deliver our services. Backendz brought documents, requests and progress updates into a straightforward experience for clients and staff.
Lily ThompsonCommercial Director at Willowbank Consulting
Our teams were entering the same information into several tools. Backendz mapped the process with us and built a more connected workflow with clear review points.
Alice CooperBusiness Systems Manager at Fairhaven Property Group
We needed scheduling, availability and shift changes in one place. Backendz shaped the system around the way our operations team works and stayed involved after launch to help us refine it.
James CarterOperations Director at Northbridge Facilities

Ask for references and we will put you on a call with the team that runs the system — not a case study PDF.

References available on request

We wanted a practical way to review PPE and safety-zone events using our existing cameras. The team focused on the situations our site managers need to investigate and made the footage easier to review.
Daniel BrooksSite Operations Manager at Oakmere Construction
The priority was a counting workflow our warehouse team could use during a normal shift. Backendz connected image-based counts with the records we already use and made discrepancies easier to review.
Michael TurnerWarehouse Manager at Harbourline Logistics
Our information was spread across several operational systems. Backendz designed a clearer way to ask questions, inspect the supporting evidence and keep approval with our team before an action is taken.
Charlotte HayesChief Operating Officer at Elmbridge Services Group
The reconciliation workflow gives our finance team one place to review mismatches and supporting records. We can trace an exception back to its source and decide what needs attention.
Henry WilsonFinance Director at Ashford Distribution
We had outgrown the spreadsheets that held our pricing rules. Backendz helped turn that knowledge into a quoting tool we can maintain and explain to new colleagues.
George EvansManaging Director at Stonefield Fabrication
Connecting our sales and inventory systems was the priority. The integration gives our team a clearer view of updates and a practical way to investigate records that need review.
Jack HarrisonTechnology Manager at Westbrook Retail
The cloud work started with understanding our existing systems and dependencies. The team documented the setup and gave us a clearer basis for monitoring and ongoing maintenance.
Oscar BennettIT Director at Brookvale Manufacturing
The engineers worked alongside our team and explained their decisions clearly. Code reviews and practical documentation helped us stay involved throughout delivery.
Freddie ClarkeHead of Engineering at Redwood Energy Services

Why Backendz

5 yrs

In production

Ops CopilotTender Response DrafterPolicy & Contract AssistantPallet CountingConstruction Site PPE & Safety MonitoringCrowd Density MonitoringDigital Security PlannerVirtual EstimatorJoblogyPamacraftsRollBnBVenus AestheticsShiftTrackerFreight DispatchInvoice Reconciliation AIChilled TraceabilitySteel Quoting EngineFactory Floor AppFleet Driver App

We quote fixed and we hold it

2

Platforms run in-house

iOS appsAndroid appsCross-platform appsField service appsCustomer appsOffline modePush notificationsCamera & photo capture
Cloud Strategy & ArchitectureCloud MigrationCustom ERP DevelopmentInfrastructure ModernisationCloud EngineeringERP ImplementationCloudOpsERP IntegrationDevOpsSupport & Managed Cloud ServicesERP Customisation & ModulesCloud Cost OptimisationERP Data MigrationCloud Security & ComplianceAI & Edge InfrastructureERP Support & OptimisationSaaS Stack AuditCustom CRM DevelopmentCustom HR & Workforce ManagementCustom Job & Field Service ManagementCustom Client Portals & BookingSaaS Data Migration & ExitAI Proof of Concept & MVP
SignaturesGPS & locationBarcode & QR scanningIn-app paymentsBiometric loginApp Store publishingGoogle Play publishingOver-the-air updates
AI Agent DevelopmentCustom AI Assistants & ChatbotsGenerative AIAI Workflow AutomationNatural language processingCustom Software DevelopmentComputer Vision DevelopmentWeb App DevelopmentMobile App DevelopmentAI Video Analytics for CCTVProduct DevelopmentMVP DevelopmentUX/UI DesignApplication ModernisationSoftware Testing & QAMachine Learning & Predictive AnalyticsERP & operationsAI Product DevelopmentData & cloudProduct & designAutomation & integrationsSupport & operations

45

Services, one team

An engineer at work on a production system

Senior engineers, not account managers

24/7 production support and monitoring

Bring us the part of the business that still runs on workarounds

FAQ

The things people ask before they commit.

Still have questions?

Ask it on the call. We would rather answer an awkward question early than discover it in month three.

Book a call
What is mobile app development?

Mobile app development is designing, building and publishing software that runs on phones and tablets, usually for iOS and Android. A business app typically connects to a back-end system so data captured on the phone, such as jobs, photos or orders, flows straight into the business's software.

Should we build native or cross-platform?

Cross-platform apps share one codebase across iOS and Android, which lowers cost and keeps features in step. Native apps suit heavy use of device hardware or very demanding performance. Backendz recommends one or the other based on what your app needs to do.

How much does it cost to build an app in the UK?

It depends on the features, the platforms and the system behind the app. A focused field or customer app costs far less than a large consumer platform. Backendz fixes the scope and price of the first release after discovery.

How long does it take to build a mobile app?

A focused business app typically takes 10 to 14 weeks to a first store release, including design, testing and App Store review.

Can a mobile app work offline?

Yes. Field apps can store data on the device when there's no signal and sync automatically when the connection returns, so staff can keep working on sites with poor coverage.

Do you publish the app to the App Store and Google Play?

Yes. Backendz handles submission, store listings and review requirements for both stores, publishing under your own developer accounts so the app stays yours.