We build native iOS and Android apps in Swift and Kotlin. They start fast, keep working offline, store sign-in details securely and ship to the stores through automated pipelines, so each release improves the app without breaking what already works.
What's included
6 capabilities, delivered by one squad. Use what you need now and add more as you grow.
Reusable components that follow each platform's conventions, with accessibility and gestures that work on every screen size.
Targets for start-up time and rendering, with profiling to find slow screens and memory leaks.
Actions saved on the device and queued, then synced when the connection returns, with rules for conflicting changes.
Tokens kept in the iOS Keychain or Android Keystore, biometric sign-in and sessions that expire safely.
Crash analytics, performance monitoring, funnel visibility and rollouts behind feature flags.
Automated signing and builds, staged rollouts and store submissions prepared to avoid common rejections.
Our approach
The usual way
Slow start-up, scroll jank and memory leaks creep in with every release.
How we do it
We set targets for start-up time and smooth scrolling, profile each build and block releases that fall short.
The usual way
Manual signing, inconsistent builds and store rejections slow every release.
How we do it
CI/CD with automated signing, reproducible builds and staged rollouts makes shipping routine.
The usual way
Crashes, freezes and drop-offs are found by users, not by dashboards.
How we do it
Crash analytics, drop-off funnels, feature flags and rollback paths, so problems surface early.
Architecture
Each layer has a clear job, so the system is easier to secure, test and extend.
Design system components, navigation, accessibility and consistent interaction patterns.
Predictable state handling, caching and on-device storage, so screens load from local data and sync in the background.
Secure storage, biometrics, certificate pinning and camera and location access, with careful permissions.
Crash analytics, performance traces, feature flags and staged rollouts with safe rollback.
How we deliver
4 phases, each ending with an output you can review.
We agree performance targets, the devices to test on, how releases will roll out and how success will be measured.
Output: Native feasibility blueprint
We build the app in modules, with its UI components, offline storage and API connections.
Output: Working native baseline
We secure sign-in, tighten permissions, profile performance and add checks that stop it slipping in later releases.
Output: Release-ready app
We release in stages with crash analytics, monitoring and rollback paths, then keep improving the app.
Output: Monitored releases
Your team
Specialists join your squad for this work, alongside a delivery lead who keeps you updated.
Designs the app's modules, UI system, state handling and integration boundaries, so it stays easy to extend.
Tests on a range of real devices, automates the tests and blocks releases that break existing features.
Automates builds, signing, store submissions and staged rollouts for predictable releases and fast rollback.
Looks after monitoring, crash tracking, performance and funnel analytics, so you can improve with confidence.
Trust and control
Performance targets, automated tests, staged rollouts and safe rollback paths on every release.
Keychain and Keystore storage, careful token handling and secure authentication.
Crash analytics, performance traces and release visibility for each app version.
You keep full ownership of the code, configuration and documentation we create, with no vendor lock-in.
We pick what fits your product and team, not the other way round.
Results
We helped Eating All Together build a mobile nutrition app that combines personalised meal plans, ingredient scanning, grocery support and nearby dining suggestions in one place.
We built mobile check-in and Bluetooth room keys for a global resort group, synced with each property's PMS so guests can skip the front desk. Wait times fell 65%, and 42% of staff were re-allocated to other work.
We built a cross-platform app for a field-operations business. Staff receive jobs, capture photos and notes, collect signatures and update job status, and the app keeps working when the signal is poor.
We built a cross-platform mobile app for a home-service company. Instead of phoning, customers book services, choose times, get updates, manage payments and see their service history in one place.
Choose native Swift and Kotlin when the app relies on the camera, sensors, AR, heavy on-device processing or the smoothest possible performance. A single React Native or Flutter codebase suits many other apps and means one codebase to maintain. We can review your feature list and recommend the approach that fits.
We set targets for start-up time, smooth scrolling and memory use, then profile each build against them on a set of real devices. Release gates block builds that miss a target, so speed doesn't slip a little with every update. Performance traces in production show which screens slow down for real users.
The app saves each action on the device first and queues it, so people can keep working with no signal. When the connection returns, the queue syncs with retries, and conflict rules decide what happens if the same record changed in two places. A failed sync is retried rather than dropped.
Tokens and sensitive data are stored in the iOS Keychain or Android Keystore, not in plain app storage. We add biometric sign-in, certificate pinning to block intercepted connections, careful session expiry and only the device permissions the app needs. These controls are designed in from the start, not added just before launch.
We automate code signing, builds and store submission checks in CI/CD, so a release doesn't depend on one person's laptop. New versions go out as staged rollouts to a small share of users first. Crash analytics and feature flags let us pause a rollout or switch a feature off if something goes wrong.
Cost depends on the number of screens and features, which device capabilities you need and whether you build for one platform or both. After a first call we suggest the right team and give a rough quote range. Ongoing work can run as a managed squad of developers, a project manager and QA on a flat monthly fee.
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Learn more about Real-time and offline-first appsTell us what you need. We'll suggest the right team and a rough quote range, and an NDA is available before you share anything sensitive.