Services Mobile app design & development

Mobile app design & development

Mobile App Development Services for iOS, Android & Cross-Platform.

Q: How do you decide between native and cross-platform for my mobile app?

We look at your target users, required features, performance needs, timeline and budget. If your app is content-heavy or workflow-driven, cross-platform (often Flutter) usually works well. If you need deep device integrations (Bluetooth, sensors, high-end graphics) or already have a native codebase, we may recommend staying native for one or both platforms.

Q: Can you use our existing backend and APIs, or do you need to build everything from scratch?

We can integrate with your existing backend and APIs if they are reasonably documented and stable. If your current backend is a blocker for performance or reliability, we will suggest realistic improvements or a phased rebuild. In many projects we handle both mobile apps and the backend so that changes are coordinated and easier to support long term.

Q: How long does it take to build a mobile app MVP?

Most MVPs take between 8 and 14 weeks from discovery to first release, depending on complexity, number of user roles, integrations and design depth. Early in the engagement we define a focused MVP scope, then give you a realistic timeline with milestones for design, development, testing and store submissions.

Q: Do you handle App Store and Google Play publishing for mobile apps?

Yes. We prepare app builds, metadata, screenshots and release notes, then guide you through creating or using your existing Apple Developer and Google Play Console accounts. We also help set up signing keys, app bundles, test tracks and a repeatable release process for future updates.

Q: Can you take over an existing mobile app built by another team?

Yes, we often join projects where an app is already live but struggling with crashes, slow performance or a stalled roadmap. We start with a code and architecture review, stabilise critical issues, then propose a practical plan for either ongoing improvements or a phased rebuild while keeping your current users supported.

Q: How do you price mobile app development projects?

For clearly defined mobile app scopes we usually work on a fixed-price milestone model. For evolving products or long-term roadmaps we prefer a dedicated or semi-dedicated team model with monthly billing. In both cases we give detailed estimates based on scope, complexity, integrations, design needs and expected support after launch.

Q: Can you support and maintain our mobile app after the initial launch?

Yes. Many clients continue with us on an ongoing support and enhancement plan that covers OS updates, crash and performance monitoring, minor improvements and small feature releases. For larger roadmaps we can provide a stable product team that handles continuous delivery of new app versions.

QalbIT designs and builds custom mobile apps that feel fast, reliable and easy to use. We work with founders, product teams and SMEs to launch new apps, rebuild underperforming ones and keep live products stable across iOS and Android.

Discuss your mobile app See mobile app case studies

Typically responding within 24–48 hours. Share your current product stage, tech stack and timelines.

Mobile development snapshot

Core focus: Custom iOS, Android and cross-platform apps
Typical engagements: MVP builds, rebuilds and long-term app teams
Tech choices: Flutter, native iOS/Android, modern backends
What we handle: UX, APIs, performance, releases and support

We typically start with a short discovery to understand your goals, constraints, existing stack and timelines – then propose a practical roadmap across architecture, UX and delivery.

Mobile app development overview

Mobile app development services for product-led teams

We help you design, build and maintain mobile apps that users actually want to keep on their phones. From first MVPs to mature products, we balance UX, engineering and release discipline so your mobile app can grow without becoming brittle.

When mobile development with QalbIT makes sense

You are planning a new mobile app and want practical guidance on scope, UX and choosing between Flutter and native.
You have an existing app with crashes, low ratings or poor performance and need a partner to stabilise and improve it.
You want one team to handle mobile UX, development and the backend/APIs instead of juggling multiple vendors.
You need predictable releases aligned with your marketing or product roadmap, not ad-hoc deployments.
You prefer a senior, founder-led team that has shipped real mobile products instead of handing work to juniors.

Outcomes we typically target for mobile apps

A stable mobile app that works well on common devices and current OS versions.
Smooth onboarding and core flows that reduce drop-offs and abandoned sessions.
Crash-free sessions, lower app size where possible and acceptable load times on typical connections.
Analytics, logging and monitoring so you can see how the app is used and where to improve.
Documentation and handover so your internal team understands architecture, releases and how to extend the app.

We usually start with a discovery sprint to clarify app goals, user journeys, backend requirements and store constraints before locking the first release scope.

What we build for mobile

Mobile app development capabilities across UX, engineering and operations

We cover the end-to-end mobile app lifecycle – from UX and architecture to backend APIs, analytics and a repeatable release process for iOS and Android.

Product discovery & UX for mobile

Clarify app goals, user journeys, information architecture and core screens. We turn requirements into mobile-first flows and clickable prototypes before committing to full builds.

Native & cross-platform app development

Engineering

Build performant apps using Flutter or, when needed, native iOS and Android. We focus on clean architecture, testability and patterns that keep future iterations manageable.

Backend APIs & integrations for mobile apps

APIs

Design and implement secure APIs, authentication, push notifications and integrations with CRM, payments, analytics or other systems that your app depends on.

Authentication, security & offline patterns

Security

Implement secure login, token handling, role-based access and offline-friendly patterns such as local caching and graceful error states for flaky networks.

Analytics, events & experimentation

Analytics

Set up event tracking, funnels and basic experimentation so you can measure how users move through your app and learn which changes actually help.

Release management & store support

Ops

Configure CI/CD, automated builds, signing, test tracks and store submissions so releasing new versions becomes a repeatable process instead of a manual fire drill.

Want to see how these capabilities map to your product? Share a quick overview and we will respond with a practical next step.

Discuss your mobile app roadmap →

How mobile projects work with QalbIT

A practical mobile app development process from idea to live app

Our process keeps mobile projects moving without losing sight of quality. You get clear milestones, visible progress and a stable app at the end – not just a rushed first release.

01

Discovery, scoping & tech choices

1–2 weeks

Understand your product, target users, required platforms, offline needs and integrations. Decide on Flutter vs native, rough scope and success criteria.

Key outcome: Clear scope for the first release, recommended tech stack and a realistic delivery plan.
02

UX flows, prototypes & architecture

2–4 weeks

Design key user journeys, low/high-fidelity prototypes and app architecture, including navigation patterns, state management and backend/API strategy.

Key outcome: Approved UX flows and a technical blueprint that reduces rework during development.
03

App and backend implementation

4–10+ weeks (scope-dependent)

Build the mobile app and, if needed, backend services in small, reviewable increments. Integrate analytics, logging, authentication and core integrations early.

Key outcome: End-to-end working app connected to real or staging data with core features implemented.
04

Testing, launch & store submissions

2–4 weeks including reviews

Run functional, device and basic performance testing, then prepare builds, metadata and screenshots for App Store and Google Play. Support you through review and rollout.

Key outcome: App live on the App Store and Google Play with monitoring in place for crashes and key events.
05

Ongoing improvements & maintenance

Ongoing, month-to-month

Monitor usage, gather feedback and continue iterating on features, UX and performance. Keep up with OS and device changes on a predictable schedule.

Key outcome: A maintained mobile app that improves over time instead of decaying after launch.

Want to see how this process applies to your current stage? Share a short brief and we will respond with a tailored next step.

Walk me through this process for my app →

Where mobile apps make the most impact

Mobile app development use cases we most often deliver

Most of our mobile work focuses on apps that support real workflows and revenue – not just one-off marketing apps. These are the patterns we see most often across clients.

Customer-facing mobile apps

For B2B and B2C product teams, founders

Customer apps

Mobile apps that let customers browse, transact, book, track or manage their accounts in a way that complements your web or offline experience.

Ask about customer-facing apps we have built →

Operational & field-force apps

For Operations and field teams

Internal apps

Apps for staff in the field – such as delivery partners, technicians or sales teams – that replace paper, spreadsheets and ad-hoc messaging with structured workflows.

Discuss an operations or field app →

Companion apps for SaaS & platforms

For SaaS founders and product teams

SaaS companion

Mobile companions to existing SaaS products that let users access critical features, notifications and dashboards on the go without duplicating everything from web.

See how a mobile companion could work for your SaaS →

Rebuild or modernise existing mobile apps

For Teams with live but fragile apps

Modernisation

Taking an existing app with technical debt, outdated UI or poor ratings and modernising it – either via a staged rebuild or a series of targeted refactors.

Not sure if your idea or system belongs here? Send us a short description and we will tell you honestly whether we are the right team for it.

Ask if your mobile app idea fits these use cases →

Tech stack & platforms

Mobile app development stack we typically use

We choose our mobile stack based on your product, internal team and long-term plans. The goal is to keep apps maintainable, observable and aligned with your backend and web stack.

Mobile frameworks & frontends

How we build the app that users actually interact with.

Flutter for a single codebase across iOS and Android in most new builds.
Native iOS (Swift) and Android (Kotlin) when deeper platform control is needed.
React Native maintained in select legacy or ecosystem-specific cases.

Backend & APIs for mobile

APIs, services and integrations that power your app.

Laravel 10/11/12 and NestJS backends designed with mobile needs in mind.
REST APIs, webhooks and background jobs for notifications and scheduled work.
Integration with payment gateways, CRMs, analytics and third-party services.

Data, authentication & infrastructure

Secure data storage and infrastructure that keeps the app responsive.

MySQL or PostgreSQL for core data, Redis for caching and queues.
OAuth, JWT and session-based auth flows depending on your ecosystem.
AWS, DigitalOcean or similar managed cloud with CI/CD pipelines.

Monitoring, analytics & QA

Keeping your app observable and improving over time.

Crash and performance monitoring via tools such as Sentry or Firebase Crashlytics.
Analytics and event tracking wired into product dashboards.
Automated tests where they add clear value, plus real-device and beta testing.

If you already have a live app, we review your current stack and only recommend changes that clearly improve reliability, performance or maintainability.

FAQs · Custom software & teams

Frequently asked questions about mobile app development with QalbIT

These are the mobile app questions founders and teams usually ask when we discuss new apps, rebuilds or ongoing mobile product work.

✓ Covers custom software development, SaaS platforms, mobile apps and integrations.
✓ Answers about pricing, engagement models, NDAs, IP ownership and quality assurance.
✓ Written for founders, CTOs and product teams hiring a remote development partner.

Have a question that is not listed here?

Share your roadmap or idea and we’ll help you pick the right engagement model, tech stack and starting point.

Contact our experts

What types of mobile apps do you build – iOS, Android or cross-platform?

We build native and cross-platform mobile apps, depending on your product and roadmap. Most new projects use Flutter for a single codebase across iOS and Android. We also work with native iOS (Swift) and Android (Kotlin) when performance, device-specific features or existing codebases make that the better choice.

How do you decide between native and cross-platform for my mobile app?

Can you use our existing backend and APIs, or do you need to build everything from scratch?

How long does it take to build a mobile app MVP?

Do you handle App Store and Google Play publishing for mobile apps?

Can you take over an existing mobile app built by another team?

How do you price mobile app development projects?

Can you support and maintain our mobile app after the initial launch?

Ready to discuss your mobile app?

Let’s plan your next mobile app release or MVP.

Share where your mobile app is today and where you want it to be. We will review your goals, constraints and existing stack, then suggest a practical roadmap – whether you are validating a new idea or improving a live product.

Book a mobile app discovery call Discuss improving an existing app

Typically we respond within 24–48 hours with next steps and a suggested starting scope.