A polished prototype with no release path
Store requirements, analytics, permissions and backend readiness are discovered after the main budget is committed.
React Native and Expo · UK delivery
Mobile app development for UK companies
Build, launch and improve one cross-platform product with a team that owns the backend, release path and post-launch quality.
GMI Software helps UK product, retail and service teams turn mobile opportunities into production React Native apps. We connect the app to real business systems, prepare store releases and keep the product measurable after launch.
UK and Poland share the core working day.
A practical first conversation
Bring the goal, constraints and systems — not a finished specification.
- The business outcome and the person who owns it
- Users, current workflow and the costly friction
- Systems, data and integrations the product depends on
- Deadline, commercial range and non-negotiable constraints
100,000+ downloadsSFD mobile appLoyalty and mobile commerce with a 4.9 App Store rating.See evidence 100,000+ downloadsMoj Swiat KsiazkiA bookstore loyalty app connected to catalogue, promotions and legacy systems.See evidence Mobile Trends Awards 2025 nomination in Commerceindependent industry recognitionThe SFD app was nominated in the Commerce category.See evidence
The app is only one part of the mobile product
A mobile team disconnected from operations
Catalogue, loyalty, payments, content and customer data become fragile manual bridges.
Two platforms, two roadmaps
Separate iOS and Android delivery multiplies QA, release coordination and feature drift without a business reason.
What changes
One cross-platform product, connected to the business behind it
We combine product design, React Native and Expo, backend/API ownership, analytics and store release. The first scope is shaped around the smallest valuable customer journey, with integration and operational risks visible before the build accelerates.
React Native and Expo
One product roadmap for iOS and Android, with native modules where the product genuinely needs them.
ExploreBackend and integrations
APIs, identity, payments, loyalty, commerce, content and existing business systems.
ExploreRelease and quality
Store preparation, regression coverage, observability and a practical post-launch ownership model.
Product analytics
A measurable activation and conversion journey rather than a download count without context.
ExploreFrom uncertainty to production
A delivery path with an outcome at every gate
Mobile opportunity review
We define the user journey, business result, platform constraints and systems the app must depend on.
Product and technical discovery
Flows, prototype, architecture, integration risk, analytics and store requirements become one delivery brief.
Build and evidence
Each iteration ends in a demonstrable app increment, QA evidence and resolved product decisions.
Release and improvement
We support App Store and Google Play release, monitor the live journey and prioritise improvements from product data.
Best for a mobile product tied to revenue, loyalty or operations
Strong fit
- A customer or employee journey with a clear business outcome
- Existing APIs or a need to build the backend in parallel
- A product owner who can prioritise scope
- A need for iOS and Android without two disconnected teams
Consider a different model when
- A disposable campaign app with no owner after launch
- A pixel-perfect clone with no access to required APIs or content
- The business cannot provide an owner for product decisions
Questions UK teams ask before the first scope
Do you build for both iOS and Android?
Yes. React Native and Expo let us manage one product roadmap across both platforms while retaining access to native capabilities when needed.
Can you work with our existing backend?
Yes. We start with an API and data-readiness review. If the current backend is incomplete, we can define and deliver the missing services as a separate, visible part of the scope.
Do you handle App Store and Google Play release?
Release readiness is part of the delivery plan: signing, store assets, privacy requirements, review risk, rollout and post-release monitoring.
Can the app start as a fixed-price project?
After discovery has defined the user journeys, integrations and acceptance criteria. For uncertain products, a bounded discovery is safer than an early fixed-price guess.
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