30+Apps shipped to stores
4.8★Healthcare app rating
2–4moTypical launch window
Smartphone with a mobile app open, photographed on a developer's desk
Native-first
iOS + Android, senior engineers only
Why clients choose us

Six criteria that separate a great mobile partner from a vendor

Senior-only mobile engineers

Every mobile engineer has shipped apps that live in the stores — not just worked on prototypes. Our mobile team averages 9 years of experience and has handled App Store review rejections, OS migration sprints and production crashes under real user load.

Native, or cross-platform when it fits

Our specialty is native — Swift for iOS, Kotlin for Android — for the deepest platform capability and performance. When a single codebase and lower cost matter more, we build cross-platform with Flutter or React Native. You get the right trade-off for your product, not a one-size-fits-all default.

Full store delivery, App Store and Play Store

Submission, review, metadata optimisation, screenshot sets, release notes and re-submission if the first review bounces — all included. We have shipped to both stores dozens of times and know exactly which details reviewers flag.

Design-to-launch in a single team

UI/UX, mobile development, backend integration and store submission handled by one coordinated team. No handoff friction between a design agency and a dev shop. One backlog, one sprint cadence, one team accountable for the outcome.

Post-launch support and SLAs

iOS major releases, Android API deprecations, third-party SDK breaking changes — these arrive whether you are ready or not. Our post-launch plans cover OS compatibility updates, performance monitoring and an SLA for production incidents so you are never exposed.

Transparent pricing — fixed-scope or team-based

Fixed-price contracts for well-defined MVPs. Team-based monthly engagements for iterative products. Both options come with open-book estimates: you see the breakdown by phase, by role, and by risk buffer before you commit.

Explore by platform

Deep expertise across every mobile platform

This page answers why you should choose UP2DATE. For capability deep-dives and platform-specific details, explore below.

Technology stack

Native-first, with cross-platform and a full backend

Swift and Kotlin are our native layer. Flutter, Dart or React Native when a single codebase fits. Firebase for real-time data and push. App Store and Play Store delivery fully managed — and the same team owns the .NET backend and Azure or AWS cloud behind the app.

SwiftKotlinFlutterDartFirebaseApp Store / Play

We are native engineers first — and pragmatic about cross-platform. For projects where Flutter or React Native is the better call, we say so and staff accordingly. Technology choice follows your product requirements, not our convenience.

FAQ

Frequently asked questions

How much does it cost to build a mobile app?

A focused consumer MVP — core feature set, auth, two or three key screens and store submission — typically runs €25k–70k. A full product with multiple user roles, a custom backend, third-party integrations and post-launch support is €70k–200k+. We provide fixed-price proposals for well-scoped MVPs and time-and-materials for iterative builds. A free 30-minute call gives you a first-cut range without any commitment.

How long does a mobile app take to launch?

A focused MVP reaches both stores in two to four months. More complex apps with a custom backend, complex data models or regulatory requirements (HIPAA, medical device) take four to eight months. We run weekly demos from sprint one so you can adjust scope based on what you see rather than waiting for a big reveal. App Store and Play Store review adds one to two weeks to any timeline.

Native or cross-platform — how do we choose?

Native (Swift, Kotlin) is our specialty and the right call when you need deep platform integration, top performance or platform-specific features — complex ARKit scenes, CarPlay, Wear OS, custom rendering pipelines. Cross-platform (Flutter, React Native) makes sense when one codebase, lower cost and faster iteration matter more; for many standard B2C and B2B apps it delivers a native-quality experience at lower cost. We run a 30-minute technical alignment session with you before recommending anything.

What happens after launch — updates, new OS releases?

Apple and Google release major OS updates annually, and each one can break things without warning. Our post-launch plans cover compatibility testing and fixes within 30 days of any major OS release. Beyond that, we offer sprint-based feature evolution or a monthly retainer covering monitoring, dependency updates and a guaranteed response SLA for production incidents.

What if Apple or Google rejects the app?

Rejections happen — even to experienced teams. We include re-submission in our store delivery process at no extra cost. We know the most common rejection patterns (privacy policy gaps, in-app purchase flows, data collection disclosures) and design against them upfront. If a review reveals a fundamental product concern, we document it, recommend a fix and re-submit. We have never had a permanent rejection on a client app.

Smith & Smith: +85% digital adoption for money transfersFintech
Case study

Smith & Smith: +85% digital adoption for money transfers

Native iOS & Android apps for international money transfers — bank-grade encryption, biometric auth and real-time tracking. Digital adoption rose 85% with zero security incidents.

+85%
digital adoption
0
security incidents
6 mo
to launch
Read the case study

Looking for a mobile app development company?

Book a free 30-minute call with a specialist consultant — leave with a platform recommendation, a realistic estimate and a clear path to the stores.

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