Mobile Apps Development
We design, build and launch iOS and Android apps that feel native, load fast and hold up as your user base grows. One accountable team, from the first sketch to the App Store and Google Play, and after.
CodeUp | Mobile Apps Development
The right foundation for your app.
There is no single best way to build a mobile app. We recommend the approach that fits your product, budget and timeline, and we tell you the trade-offs plainly.
The best fit when you need the deepest access to Apple hardware, the smoothest animation, or day-one support for new iOS features such as widgets, Live Activities and HealthKit.
Built with Google’s current toolkit for Android phones, tablets and foldables, with attention to the wide range of screen sizes and device performance your users actually carry.
One team and one codebase for both stores, with native modules where the platform demands it. Usually the fastest route to market and the most economical to maintain over time.
APIs, authentication, push notifications, file storage and analytics, designed alongside the app so that sync, offline use and security are planned from the start.
Native or cross-platform? Here’s how we decide.
We make this call with you in the first week, based on what your app has to do rather than on what we prefer to build.
Needs to launch on both stores quickly
One shared codebase means features reach iOS and Android together, with a single team to coordinate.
Relies on camera, AR, Bluetooth or sensors
Direct access to platform APIs gives better performance and fewer surprises across device models.
Is content, commerce or booking led
Standard screens and flows are well served by shared components, and it pairs naturally with a Next.js web product.
Depends on rich custom animation
Both give fine control over rendering for brand-led, motion-heavy interfaces.
Serves one platform first
You invest once in the audience you have and expand when the data supports it.
The features users expect from a great app.
Each one is built, tested on real devices and documented, so launch day is not spent on plumbing.
Onboarding and sign-in
Email, Apple, Google and biometric sign-in, with sessions stored securely on the device and a first-run flow that gets people to value quickly.
Payments and subscriptions
In-app purchases through StoreKit and Play Billing, Apple Pay, Google Pay and Stripe, with receipt validation handled on the server.
Push notifications
Targeted, permission-aware messages through APNs and Firebase Cloud Messaging, with deep links that open the right screen.
Offline-first sync
Local storage and background sync so the app stays useful on a train, in a basement or on a weak connection, and catches up cleanly afterwards.
Maps, location and media
Live location, geofencing, camera, photo and video capture, and uploads that resume if the network drops.
Real-time and chat
Messaging, presence and live updates over WebSockets, for marketplaces, logistics, healthcare and community products.
Start from an idea, or from an app you already have.
New app build
From idea to a live app. We define the first release, design every screen, build in weekly increments and take it through store review.
- Startup MVPs and consumer apps
- Booking, delivery and marketplace apps
- Companion apps for existing products
Rebuild and modernize
Give an aging app a stable, faster foundation without losing the users and reviews you have already earned.
- Objective-C and Java to Swift and Kotlin
- Two native apps to one cross-platform codebase
- Crash, speed and OS-update remediation
Dedicated mobile team
Senior mobile engineers and a designer who join your roadmap, work in your repositories and follow your process.
- Monthly retainer for ongoing releases
- App audits and performance reviews
- Store updates, compliance and support
Quality you can feel in the first tap.
Every app we ship passes the same checks, whatever its size.
Tested on real devices
Automated tests on every commit, plus manual testing on physical iPhones and a spread of Android models and OS versions.
Performance budgets
We set targets for launch time, frame rate, memory and battery use, and measure against them before each release.
Security by default
Encrypted storage for sensitive data, certificate pinning where it matters, secure token handling and a review against the OWASP Mobile Top 10.
Accessibility
VoiceOver and TalkBack support, dynamic text sizes, sufficient contrast and touch targets sized for real thumbs.
Privacy and compliance
Clear permission prompts, accurate App Store privacy labels and Play data-safety forms, and consent flows that follow GDPR and CCPA.
Crash-free monitoring
Crash reporting and analytics from the first beta, so regressions are found by us and not by your reviewers.
A working build on your phone, every sprint.
Discover
We align on users, goals, platforms and the smallest release worth shipping, then agree the scope in writing.
Design
Flows and interactive prototypes you can hold in your hand, tested with real users before engineering starts.
Build
Two-week sprints end with a build delivered through TestFlight and Play internal testing for you to try.
Launch and grow
Store submission, staged rollout, monitoring and a handover. We stay on for updates and new OS releases if you want us to.
Ready to build your app?
Tell us about the idea, the audience and the deadline. We reply within one business day with questions and a first plan.