Mobile-first strategy studio

From experience maps to secure mobile deployments, we launch products that earn loyal users.

We blend concept development, user flow design, and scalable engineering so brands own every touchpoint across iOS, Android, web, and wearables.

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Experience Mapping

We storyboard entire app lifecycles to ensure visual hierarchy and API integration plans stay aligned.

Includes concept prototypes & KPI dashboards.

Security & QA

Our mobile security audits follow NCSC guidance with encryption reviews, pen tests, and push notification management.

Recent audit cycle completed in 17 days.

ASO & Growth

App Store Optimization sprints refine metadata, creative, and preview flows to lift conversion by 21% avg.

Backed by user engagement tools & A/B testing.

Source: Statista Mobile App Report 2024

Mobile product dashboards

Cloud-native & API-ready

Powered by secure CI/CD

End-to-end coverage

Full-cycle services shaped for scaling brands

We unify Mobile App Development, UX/UI Optimization, and Product Design for teams that need reliable velocity.

Workshop board describing concept development

Strategic Advisory

Experience mapping, concept validation, and agile roadmaps built around measurable KPIs.

  • Discovery interviews
  • Digital transformation design
  • Mobile app architecture reviews

Design Ops

Custom App Design, style guides, and interactive prototyping to lock user-centric interfaces.

  • Visual storytelling systems
  • Brand identity design
  • Component libraries

Engineering

Cross-Platform Solutions leveraging React Native, Flutter, Kotlin, and Swift for native vs hybrid strategies.

  • API integration sprints
  • Cloud-based applications
  • Mobile app security audits

Growth Care

Continuous ASO, push notification management, and analytics instrumentation.

  • User engagement tools
  • App testing & QA cycles
  • App migration services

Tech stack & ecosystems

Native craftsmanship meets scalable cross-platform delivery

Platform spectrum across iOS Android and web

iOS & watchOS

Swift + SwiftUI, Wallet, HealthKit, and wearable integrations for premium UX.

Avg. launch timeline: 12 weeks

Android & Wearables

Kotlin-first builds featuring Material You theming, voice recognition, and location-based services.

Latency budget & offline-first logic baked in.

Cross-Platform

React Native, Flutter, and Progressive Web Apps to balance reach and performance.

Best for multi-market rollouts.

Specialized

Gaming apps, interior design visualisers, e-commerce tooling, and secure enterprise portals.

Includes AR try-ons & social media integrations.

According to the McKinsey Digital 2024 report, 70% of consumer interactions now start on mobile. Our agile development methodologies keep performance budgets, security, and creative design solutions aligned to that reality.

Read the McKinsey insight

Lifecycle governance

Transparent delivery rhythm

Agile delivery blueprint illustration

  1. 01 • Discovery

    Experience mapping, user flow design, and infrastructure scoring sessions.

  2. 02 • Design Lab

    Interactive prototyping, visual hierarchy decisions, and brand guidelines.

  3. 03 • Build

    Full-stack mobile development with CI/CD, API integration, and QA automation.

  4. 04 • Hardening

    Encryption reviews, data protection controls, penetration testing, and accessibility passes.

  5. 05 • Launch & ASO

    App Store Optimization, deployment support, and KPI baselining.

  6. 06 • Growth Care

    Usage analytics, feature flags, push notification experiments, and migration planning.

Design, but pragmatic

Prototype-driven collaboration

Prototyping screens collage

We align product-market hypotheses with experience maps, ensuring creative storytelling, tonal guidelines, and interior design cues stay consistent across mobile flows.

Interactive prototyping in Figma and React Native Preview, followed by moderated testing to validate user-centric interface design decisions.

Style guides codify typography, iconography, and graphic design motifs, ensuring every asset adheres to brand guidelines before engineering begins.

Proof points

Recent impact snapshots

Fintech flow revamp

Reduced onboarding friction by 41% via progressive disclosure, biometrics, and cloud-based applications for compliance.

Wearable wellness

Launched wearable app development kit with voice recognition integration and predictive coaching algorithms.

E-commerce mobile apps

Scaled catalog sync to 50k SKUs with offline-first caching, leading to 23% uplift in cart completion.

Gaming apps development

Delivered cross-platform mobile frameworks with real-time leaderboards and push notification management.

Delivery intelligence

What keeps our launches resilient

Agile development methodologies

Dual-track discovery, design crits, and sprint demos maintain clarity while leaving room for creative design solutions.

Data & Security

Encryption and data protection policies aligned with UK GDPR. Mobile app security audits documented for every release.

Cloud foundations

Multi-region clusters with automated scaling support API integration-heavy workloads.

Deployment readiness

App migration services, app testing and QA, and post-launch ASO cadences keep momentum.

Let’s scope your roadmap

Schedule a working session

Consulting team in workshop

We reply within one business day. Submissions route to {{CONTACT_EMAIL}}.

RJ BIG HOLDINGS LTD

7 Bell Yard, London, WC2A 2JR, United Kingdom

+44 7093 44105

team@rjbigholdings.club

Business ID: RJ-BIG-UK-0725

End-to-End App Development API-first stack Cloud native