Mobile App Development for iOS, Android & Cross-Platform
We design and build production-grade mobile apps — cross-platform with Flutter, or native iOS (Swift) and Android (Kotlin). From consumer apps to enterprise mobile solutions, we've delivered 150+ mobile apps for clients in the USA, UK, Canada, and Europe.
What is Mobile App Development?
Quick Answer — What is Mobile App Development?
Mobile app development is the process of designing and building applications that run on iOS and Android smartphones and tablets. SpiderHunts Technologies builds cross-platform apps using Flutter (one codebase, two platforms) or native apps in Swift (iOS) and Kotlin (Android) for maximum platform performance. We handle design, development, testing, App Store/Play Store submission, and post-launch support.
- Technology
- Flutter, React Native, Swift, Kotlin
- Build Time
- 8–20 weeks
- Cost Range
- £15,000–£100,000+
- Platforms
- iOS, Android, cross-platform
- Post-launch
- App Store optimisation & updates
Mobile App Development Services
From consumer apps to enterprise mobile platforms, we deliver mobile experiences that users love and businesses rely on. Every app is designed mobile-first, tested on real devices, and built for the App Store and Google Play from day one.
Cross-Platform (Flutter)
One codebase, two platforms. Flutter delivers native-quality performance on iOS and Android from a single development cycle — reducing cost and time to market without compromising quality.
Native iOS (Swift)
Purpose-built iPhone and iPad apps using Swift and SwiftUI. Full access to all iOS APIs: Face ID, HealthKit, ARKit, Apple Pay, Core Data, and push notifications.
Native Android (Kotlin)
Native Android apps using Kotlin and Jetpack Compose. Full Material Design compliance, Play Billing, Firebase, Google Pay, and deep Android system integration.
AI-Powered Mobile Apps
Mobile apps with AI features: image recognition, voice commands, personalisation engines, on-device ML models, and OpenAI/Claude integrations via API.
Offline-First Apps
Apps designed to work without a reliable internet connection — with local storage, background sync, and conflict resolution. Critical for field teams and remote workers.
Enterprise Mobile Solutions
Secure enterprise apps with MDM support, SSO/SAML authentication, offline capability, barcode scanning, and integration with ERP/CRM systems.
Why Most Mobile Apps Fail — and How We Fix It
25% of mobile apps are only used once. Poor UX, slow performance, App Store rejection, and lack of post-launch support are the four killers. We've solved all four.
✕ Without the Right Team
- Poor UI/UX causing immediate uninstalls
- Apps rejected by Apple/Google for policy violations
- Slow performance on older devices
- No App Store optimisation — app can't be found
- Developers who disappear after launch
- Hidden costs from bugs found post-launch
✓ With SpiderHunts Mobile Development
- User-tested design with 95%+ retention in week 1
- Zero-rejection App Store & Play Store submission track record
- 60fps performance tested on real devices
- ASO (App Store Optimisation) included from day one
- 12 months post-launch support included
- Fixed-price contract — no surprise invoices
Mobile Apps We've Built
Field Service App
Built a Flutter field service management app for a facilities company — job scheduling, photo capture, offline sync, digital signatures, and GPS tracking for 200+ field engineers.
Consumer Lifestyle App
Built a health & fitness app (iOS + Android) with workout tracking, AI coaching, subscription billing (RevenueCat), and push notifications — reaching 50,000 downloads in 3 months.
B2B Sales App
Built a native iOS CRM companion app for a SaaS company — allowing sales reps to log calls, view pipeline, and update deals from their iPhone, synced with Salesforce in real time.
On-Demand Marketplace
Built a two-sided marketplace app (iOS + Android) with real-time booking, GPS tracking, in-app payments (Stripe), push notifications, and admin dashboard.
Enterprise Warehouse App
Built an Android warehouse management app with barcode scanning, real-time inventory, offline-first architecture, and SAP integration for a logistics company.
AI Photo App
Built a Flutter app with on-device AI (Core ML / TensorFlow Lite) for real-time image enhancement — processing 500,000 images per month at zero API cost.
Industries We Build Mobile Apps For
Healthcare & Fitness
Patient-facing telehealth apps, fitness trackers, HealthKit/Google Fit integrations, HIPAA-aware data handling, and wearable device connectivity.
E-commerce & Retail
Native shopping apps with product catalogues, Apple Pay / Google Pay, loyalty programmes, push promotions, and deep Shopify or custom backend integration.
Field Services
Offline-first field service apps for engineers, technicians, and inspectors — job management, digital forms, photo capture, GPS routing, and ERP sync.
Education & EdTech
Mobile learning apps with video lessons, progress tracking, gamification, offline content, and subscription billing for students and corporate training teams.
FinTech
Secure financial apps with biometric login, PCI-DSS-aware payment flows, open banking integrations, budgeting tools, and real-time transaction tracking.
Logistics & Delivery
Driver and dispatcher apps with real-time GPS tracking, route optimisation, delivery confirmation, barcode scanning, and warehouse management integration.
Our Mobile App Development Process
Discovery & Wireframes
We map your user journeys, define must-have features, choose the right platform (Flutter / native), and produce low-fidelity wireframes for every screen before any code is written. This eliminates costly rework downstream.
Design & Prototype
High-fidelity UI designs in Figma — pixel-perfect screens following iOS Human Interface Guidelines and Android Material Design. Interactive prototype shared for stakeholder sign-off before development begins.
Build & Test
Agile 2-week sprints. You see working builds every fortnight via TestFlight (iOS) and Firebase App Distribution (Android). We test on real physical devices — not just simulators — across screen sizes and OS versions.
App Store Launch & Support
We handle full App Store Connect and Google Play Console submission — metadata, screenshots, ratings, privacy declarations, and review response management. Post-launch: 12 months of support, ASO monitoring, and sprint-based feature releases.
Flutter vs React Native vs Native — Which is Right for You?
| Feature | Flutter | React Native | Native (Swift/Kotlin) |
|---|---|---|---|
| Performance | Near-native | Good | Maximum |
| Code sharing | 95%+ shared | 85%+ shared | 0% — separate codebases |
| Platform feel | Excellent (custom UI) | Good | Perfect |
| Access to all APIs | Yes (via plugins) | Mostly | Full access |
| Community | Large & growing (Google-backed) | Large (Meta-backed) | Established, stable |
| Build cost | Lowest (single codebase) | Medium | Highest (two apps) |
| Best for | Most apps — best value cross-platform | JS teams, existing React codebases | Maximum performance & platform depth |
Our Mobile App Technology Stack
We use production-proven mobile technologies — chosen for performance, maintainability, and long-term App Store compatibility. No experimental frameworks. No vendor lock-in. Every tool in our stack has been validated across dozens of live apps.
Mobile App Development — USA, UK, Canada & Europe
SpiderHunts Technologies is a UK-registered mobile app development company trusted by businesses across the USA, United Kingdom, Canada, Europe, and South Africa. We handle App Store and Google Play submissions for every region — including US, UK, Canadian, and EU developer accounts — so your app launches correctly wherever your users are.
USA — Mobile App Development
Mobile app development for US startups and enterprises. US App Store & Google Play submissions. HIPAA-aware, CCPA-compliant data handling. Stripe US payment processing and Apple Pay integration.
UK — Mobile App Development
UK-based mobile app development agency. London office. GDPR-compliant apps by design. UK App Store submissions and British English localisation. Apple Pay & Google Pay with UK acquiring banks.
Canada — Mobile App Development
Mobile apps for Canadian businesses. PIPEDA-compliant data practices. Canadian App Store & Google Play listings. French-English bilingual app support for Quebec market requirements.
Europe & South Africa
GDPR-native mobile apps for EU markets. Multi-language localisation for German, French, and Dutch audiences. South African mobile app development with POPIA awareness and local payment integrations.
Frequently Asked Questions About Mobile App Development
How much does mobile app development cost?
A focused cross-platform Flutter app costs £15,000–£35,000. A native iOS or Android app with complex integrations costs £25,000–£60,000. A full marketplace or enterprise app costs £50,000–£100,000+. We provide a fixed-price quote after a free discovery call.
How long does it take to build a mobile app?
A focused MVP app takes 8–12 weeks. A full-featured app with integrations, push notifications, and payment processing takes 16–20 weeks. We build in 2-week sprint cycles.
Should I build for iOS, Android, or both?
If budget allows, build for both using Flutter — one codebase, two platforms, significantly lower cost than building two native apps. If you have a specific user base on one platform, we can start native and cross-platform later.
Do you submit the app to the App Store and Google Play?
Yes. We handle the full submission process for both stores — developer account setup, App Store review requirements, metadata, screenshots, and Play Store listing optimisation.
What is Flutter and is it good enough for production?
Flutter is Google's open-source UI framework for building native-quality apps from a single codebase. It powers apps at BMW, eBay, Alibaba, and Google Pay. Performance is near-native on both iOS and Android.
Can you add AI features to our mobile app?
Yes — we integrate AI into mobile apps via API (OpenAI, Claude, Gemini) or on-device models (Core ML on iOS, TensorFlow Lite on Android). Common AI features: image recognition, voice commands, chatbots, and personalisation.
Do you offer post-launch support?
Yes — all projects include 12 months of post-launch support covering bug fixes, OS compatibility updates, and minor feature additions. We also offer App Store Optimisation (ASO) monthly retainers.
Can you take over an existing app?
Yes. We regularly take over apps from other development teams — conducting a code audit, fixing technical debt, and continuing development. We document our findings and agree a clear scope before starting.
Related Services
Other services businesses combine with mobile app development
Ready to Build Your Mobile App?
Tell us your app idea. Book a free 30-minute discovery call and we'll advise on the right platform, tech stack, timeline, and cost — with a fixed-price quote.