Mobile App Development for iOS & Android, Built with Flutter
We build mobile apps that people keep using: quick to open, smooth to scroll, and still working when the signal drops. As a Flutter app development company, we ship one codebase to both iOS and Android, then write native Swift and Kotlin wherever your app needs to reach deeper into the device, from Bluetooth sensors to biometric login.
How we engineer mobile apps that hold up in production
A slow, glitchy app gets uninstalled within days, so we skip web wrappers and heavy hybrid containers. Our Flutter apps compile ahead of time to native ARM code, and Flutter's Impeller renderer draws every frame on the device's GPU through Metal on iOS and Vulkan on Android. When your app needs low-level device access, such as Bluetooth peripherals, background geofencing or secure biometrics, we write the native Swift and Kotlin layer ourselves rather than trusting an untested plugin.
Behind the screens, we keep the logic predictable. State lives in Riverpod or Bloc, business rules sit in a clean-architecture domain layer, and the UI simply renders what it is told. That separation makes every screen easy to test and safe to change. We also treat a lost connection as a normal state, not an error, so your users can keep working in a basement warehouse, on a moving train or at a rural clinic.
Smooth rendering at 60 and 120 FPS
Impeller precompiles its shaders, which removes the first-run stutter older Flutter apps were known for. Animations stay fluid on iPhones and modern Android phones, including 120 Hz displays.
Local-first data that syncs when it can
Every action saves to an on-device SQLite database first, so the screen responds instantly. A background queue syncs changes to your server once a connection returns, and resolves conflicts using rules we agree with you up front.
Release pipelines that catch problems before users do
Fastlane and GitHub Actions build, test and sign every release. Builds go to TestFlight and Google Play testing tracks automatically, with store screenshots generated in the same run.
Flutter, native or React Native: how we choose
We recommend Flutter for most new products, but not for all of them. The right choice depends on your users, your timeline and the team who will maintain the app after launch.
If a native build will serve you better, we will say so in the scoping call, even when it means a larger quote.
| Your situation | What we usually recommend | Why |
|---|---|---|
| A new product for iOS and Android on a tight budget or timeline | Flutter Primary Choice | One codebase and one team, with the same UI on both platforms |
| Heavy Bluetooth, camera or sensor work | Flutter with custom Swift and Kotlin plugins Hybrid Depth | Shared screens, with native control where timing matters |
| An app built around one platform's newest features, such as home-screen widgets, Live Activities or Wear OS | Native Swift or Kotlin, or Flutter with native extensions Native Specialized | Direct access to platform APIs as soon as they ship |
| An existing React Native app or a strong in-house React team | Team Continuity | Reuse the code and skills you already have |
Custom mobile apps we build
From mission-critical operational tools to consumer platforms and connected hardware companions.
Field service and workforce apps
Offline job sheets, photo capture, digital signatures and GPS check-ins.
IoT and BLE companion apps
Pair with sensors, machines and wearables, stream live readings and push firmware updates.
E-commerce and marketplace apps
Catalogues, carts, payments, order tracking and push campaigns.
Booking and on-demand apps
Scheduling, live availability, location tracking and in-app payments.
Enterprise and ERP companion apps
Mobile front ends for Odoo and custom ERPs, covering approvals, inventory and sales orders.
Startup MVPs
A focused first release to test with real users, on a codebase you can keep growing.
App rescue and modernisation
Stabilising an unmaintained app, or moving an ageing native or hybrid app to Flutter.
Telemedicine and digital health apps
Remote vitals sync, encrypted patient consultations, prescription refills and HIPAA/GDPR secure record access.
FinTech and digital wallet apps
Biometric authentication, instant peer-to-peer transfers, real-time ledger sync and micro-investing platforms.
Mobile app development services: what we deliver
Six capabilities sit at the core of every mobile project we take on.
Flutter apps that run at 60/120 FPS
Feels native. Riverpod or Bloc state management, tuned widget rebuilds and GPU rendering through Impeller, so scrolling and transitions feel like a native app.
Offline-first sync with SQLite
Works without signal. Local caching, background sync, write queues and clear conflict rules. Users keep working with no connection, and nothing they enter is lost.
Hardware and native sensor integration
Custom Swift and Kotlin. Bluetooth Low Energy peripherals, camera-based barcode and QR scanning, Bluetooth thermal printers, and Face ID or fingerprint login.
Push notifications and real-time updates
Live, not refreshed. Firebase Cloud Messaging, APNs (including VoIP pushes for calling apps) and WebSocket connections for chat, live tracking and device telemetry.
In-app purchases and subscriptions
Billing you can trust. StoreKit 2 and Google Play Billing, with purchases validated on the server through RevenueCat or your own backend, so renewals, refunds and cancellations stay in sync.
App Store and Google Play release management
Fewer rejections. We prepare builds, privacy disclosures, Data safety forms and store listings against Apple's App Review Guidelines and Google Play policies before we submit. Fastlane automates the repetitive steps, so every release follows the same checklist.
How AI speeds up our mobile delivery
We use AI to take repetitive work off our engineers' plates, and a senior engineer reviews everything it produces. That keeps delivery fast without handing judgement to a model.
In how we build
- Faster scoping: AI breaks your brief into features and draws first-pass effort estimates from our past projects. An architect then checks every line.
- AI-drafted tests: For each pull request, AI drafts Flutter widget and unit tests covering edge cases. Engineers review and extend them before merge.
In what we build for you
- On-device AI: Compressed TensorFlow Lite and ONNX models run text recognition and voice commands on the phone itself, so they work offline and carry no per-request API cost.
- Predictive pre-loading: The app learns which screens users usually open next and loads that data in advance, so it appears instantly.
We choose tools for performance, long-term support, and security. Explore our mobile, frontend, backend, database, and devops foundations.
Mobile apps for your industry
We build mobile products for the sectors we serve. Each industry name links to its dedicated industry practice.
Retail and e-commerce
Loyalty programmes, catalogues, cart and checkout, personalised push offers
Healthcare and MedTech
Appointment booking, video consultations, readings from connected devices over Bluetooth, secure record access
FinTech and banking
Biometric login, KYC onboarding, wallets, transaction alerts
Logistics and fleet
Driver apps, proof of delivery, barcode scanning, live tracking
Manufacturing and ERP
Shop-floor data capture, machine monitoring, Odoo approvals on mobile
Real estate and PropTech
Map-based listings, site-visit booking, tenant service requests
EdTech and learning
Course apps with offline downloads, quizzes, live classes
CleanTech and energy
Meter and charger monitoring, field inspections, usage dashboards
Professional & Field Services
Technician dispatch, work orders, digital contracts, timesheets and client sign-off on site.
From first call to launch: our mobile delivery process
AI runs through every stage and a senior human owns every decision. Here is where each one does the work.
Inquiry & Scoping
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Why teams choose Steigern Tech for mobile app development
Your app is unlikely to be the first of its kind we have built, which means fewer surprises and faster decisions.
10+ years and 200+ projects
Since 2014 we have shipped software for clients across Europe, the US and Asia. Your category is familiar ground, not a discovery exercise.
AI designed in from sprint zero
When your product needs intelligent features, we plan them into the architecture from the first sprint instead of bolting them on later.
One team across time zones
With hubs in Ahmedabad and Melbourne, we plan overlap hours with clients in the US, UK and Asia-Pacific, so your questions get answered the same working day.
You own the code from day one
We commit to your private Git repository from the first sprint. The source code, documentation and intellectual property are yours, with no lock-in.
Quality gates on every build
Automated CI/CD checks, regression test suites and dependency reviews run before anything reaches production.
Built to scale
We design backends for traffic spikes, multi-tenant data and cloud auto-scaling, so growth does not force a rebuild.
Ways to work with us
Flexible structures designed around your product maturity and technical team roadmap.
Fixed-scope MVP
An agreed feature set, timeline and price. Best for testing a new product with real users.
Dedicated Flutter team
Developers, QA and a technical lead who work as part of your team, month to month.
Time and materials
Flexible scope, billed for the hours used. Suits evolving products and post-launch work.
A partner who's already shipped in your category.
Depth compounds. Our mobile app development practice has shipped production software for high-scale enterprise clients — your architecture is a recognisable pattern, not an experiment. See live portfolio work across industries.
10+ years, 200+ projects
Since 2014, we've shipped mobile app development solutions across Europe, the US, and Asia — your category is a known quantity, not a discovery engagement.
AI embedded, not bolted on
Intelligent features are designed into the architecture from sprint zero — not added as afterthoughts when roadmap pressures mount.
Global delivery, one team
Follow-the-sun delivery across US, UK, and Asia-Pacific overlap means your engineering roadmap never waits for a timezone to wake up.
Code you own on Day 1
Direct Git commits pushed directly into your private repository from the first sprint. Clean documentation, zero IP lock-in, and 100% intellectual property ownership.
Production standards by default
Strict automated CI/CD quality gates, ISO 27001 data practices, deterministic regression test suites, and zero unvetted dependencies in production.
Enterprise scale guaranteed
Architectures engineered to handle concurrency spikes, multi-tenant databases, and seamless horizontal cloud auto-scaling with sub-second response times.
Mobile app development FAQs
Answers on architecture, code ownership, timelines, cost and support.
Ready to scope your mobile app? Let's talk this week.
Share your idea, and within one business day a principal solutions architect will send you an architecture outline, a sprint roadmap and a budget range. There is no obligation to go ahead.
Ready to build your
Mobile App Development?
Share your specifications with us. An engineering lead in your region will review your requirements, sign mutual NDAs, and provide architectural notes within 24 business hours.