Mobile App Development Services that cover the app, its backend and the store release.

Start from what the app has to do, not from a framework. Three things decide it: which devices your users actually carry, what the app has to touch on the device (camera, GPS, offline storage, push notifications, sensors), and how many codebases you are willing to maintain after launch. Cross-platform in React Native or Flutter gives you one codebase for iOS and Android; native in Swift or Kotlin gives you the deepest device access and the newest OS capabilities, and you build and maintain twice for it. Either way you are designing against the platform owners' own guidelines, Apple's Human Interface Guidelines and Google's Material Design. We make the recommendation during discovery and show the reasoning, and the option-by-option detail lives on iOS and Android.

Four routes, and we build in two of them. Cross-platform (React Native, Flutter) ships one codebase to both stores with near-native performance, and it is our default recommendation. Native (Swift, Kotlin) is what we reach for when a feature needs full device performance or an OS capability the month it lands, and it costs more because there are two codebases to build and keep. Hybrid wraps web technology, HTML5 and JavaScript, inside a native shell: it is the cheapest way onto a store listing and you pay for it in feel and performance, which is why it is the route we recommend least. A progressive web app installs from a URL with no store listing and no review queue, and gives up the store presence and the device access an app has. It is a real answer when distribution rather than device capability is the problem.

The timeline is set by the integration list and the platform decision more than by the screen count, so we put the schedule in writing after discovery, built from your own integration list. What moves it most: how many systems the app has to talk to, whether the backend behind it already exists, how much design is needed, and how fast your side can answer a question that is blocking a screen. What we commit to is a release order that puts the version you could launch with first, and dates you can hold us to once discovery has produced them.

We price against your scope, because most of a mobile number is the integration list and no two integration lists are alike. What moves it: how many features and how complex they are, cross-platform or native, how much backend and third-party integration sits behind the app, and how much design and QA it needs. There are three ways to pay for it: time and materials, billed hourly and quoted per project; fixed price, outcome based and quoted per project; or team extension, billed monthly per team member. Discovery is what turns your requirements into a detailed estimate, and you see it before you commit to a build. Most engagements start within two to four weeks.

Yes, and we map the integrations during discovery rather than after, because that is where schedule risk lives. For a US software consulting firm we built a trailer-tracking portal with a mobile component that validated vehicle information through third-party APIs and registered events back into their own client's API. On a rental operation we integrated the Mindbody Online API, so the platform stays in sync with a CRM that is well known in fitness and wellness. On a service-intelligence product we built the middleware layer between the application and the CRM and warehouse systems repair shops already use.

Both, and the second is the more common request here. For a German security and building-management software company we worked inside their own team on the iOS and Android apps built on the web client they already ran, taking the parts that are fiddly rather than glamorous: layout, theming and video streaming. For a national governing body in Ireland a new React Native app replaced the old one while we rewrote the platform underneath it module by module. If the real job turns out to be the aging system rather than the app, legacy modernization is the route, and discovery says so before anything is rebuilt.

We are certified rather than self-declared: ISO 27001:2022 and ISO 9001:2015, renewed through a multi-stage audit with Quay Audit UK. ISTQB-certified QA sits inside every sprint, on every engagement, rather than in a phase bolted on at the end. Access to your systems is least-privilege, agreed with your own technical contact and read-only wherever the work allows. Our security practice, one dedicated security engineer plus a part-time senior security consultant, reviews how the app stores data and credentials on the device and how it talks to your backend, because a phone is a device you do not control on a network you do not control.

Three questions can be settled before a first call, and here are our answers to all three. Ask for the link to each review: each client quoted here links to the one they gave. Ask which certifications a firm holds and who audited them: we hold ISO 27001:2022 and ISO 9001:2015, audited by Quay Audit UK. And ask who picks up the phone in year two, when an OS release breaks a dependency long after sign-off: ours are 100+ senior in-house engineers across six countries, and no project is passed down a subcontractor chain.

When the app does operational work and has to keep working after launch, for field crews, dispatchers, inspectors, members and customers who finish a task on a handset. That is what senior in-house engineers, QA in every sprint and support after launch are built for. Where the app, its backend and the store release move together, one team owns all three. Discovery checks your process against off-the-shelf booking, delivery and field-service products before a build is quoted, and where the real job is the system rather than the app, modernizing the system behind the app comes first.