The screens exist, the app does not
A previous vendor built the interface, but the build keeps failing App Store review and nobody can answer the reviewer. Every reply starts a new review cycle — and another week.
Mobile app development for iOS and Android
We design, build and publish mobile applications — native and cross-platform. Backend, integrations and the release to the App Store and Google Play are on us. You receive an app that is live in the stores, not a folder of screens waiting to ship.
What usually brings you here
You have a web version, not a mobile one
A customer searches for you in the App Store, finds nothing, and signs in through the browser again. Your competitor owns the home-screen icon — you do not.
Two vendors, two different apps
One team builds iOS, another builds Android, and within months the same screen behaves differently on each phone. You agree every fix twice — and wait twice as long.
What we build into the app
Interface that follows platform guidelines
Navigation, gestures and typography per HIG and Material Design
Offline mode
Local storage and sync on reconnection
Push notifications
Delivery through APNs and FCM, segmentation, a settings screen
Backend and API integration
A connection to your system, or a backend from scratch
Store publishing
Store listings, certificates, data declarations, review submission
Analytics and crash reporting
Funnel events and crash reports tagged with the build number
What you get
- Source code in a repository on your own account
- The app published on the App Store and Google Play
- Backend, database and environments with full access
- Architecture documentation and a release runbook
- Store assets: icons, screenshots, descriptions, privacy policy
How we work
Discovery and scope
3–5 daysWe break the idea into a list of screens and features, and settle what belongs in the first version. We walk the flow the way a user would, to catch the screens nobody thought of. This is also where native or cross-platform is decided.
Screen design
1–2 weeksWe draw wireframes and a clickable prototype built to both platform guidelines. We put the prototype on your own phone, so you walk the whole flow with a thumb rather than on a laptop screen. We rework the layout until the path is obvious without explanation.
Development
2–4 weeks to the first versionWe build the app and the backend in parallel. We ship a build through TestFlight and Google Play internal testing every week, so progress shows on a device rather than in screenshots. We close features one at a time, starting with the core scenario.
Device testing
3–5 daysWe test on older and newer models, on weak connections and after the network drops. We reproduce real situations: a lift, a metro carriage, an interrupted payment, a call mid-form. We fix whatever surfaces before the build goes to the store.
Release
submitted in a day, review is on the storesWe prepare the App Store and Google Play listings, configure certificates and data declarations. We submit the build for review and answer reviewer feedback on your behalf. Review timing belongs to Apple and Google, so we give it as a range rather than a promise.
Support and iteration
monthly agreementWe watch crashes, ship fixes and prepare the app for the annual iOS and Android releases. We test each build on the system beta before the update reaches your users. New features are planned into later releases.
Native vs cross-platform (React Native / Flutter)
There is no single right answer here — there is a trade between speed and control. For business apps we usually propose cross-platform; for graphics and real-time processing, native. The call is made after we go through the feature list.
| Native (Swift / Kotlin) | Cross-platform (React Native / Flutter) | |
|---|---|---|
| Time to first version | Two apps; the same screen built twice | One codebase; one screen for both systems |
| Development effort | Two implementations, two skill sets: Swift and Kotlin | One codebase; less gain when screens diverge per platform |
| Performance | Games, heavy 3D, long camera sessions, video processing | Lists, forms, maps, chat, payments — most business apps |
| Access to device features | Full access from day one; new system APIs immediately | Camera, GPS, push, Bluetooth, biometrics via ready-made modules |
| Long-term maintenance | Two repositories, two release tracks; Apple and Google only | One fix for both platforms; plus a framework dependency |
When we advise against a mobile app
Not every idea needs a store listing. Three cases where the honest answer is no.
The idea is not validated yet
If you do not know whether people will use it, a web app answers that faster and cheaper. With no review, no certificates and no second platform, the first users reach the product the same week. The store is where we go once it is clear what belongs inside.
The job is really about content
A catalogue, a blog or a contact form does not need installing. People open it in a browser anyway, and Apple rejects apps that are a wrapped website. That is guideline 4.2 of the App Store rules, and a rejected build comes back to you days later.
There is no budget for life after launch
A mobile app needs a release for every major iOS and Android version, and those ship every year. Without maintenance planned in, crashes start on new phones within a year and the listing disappears within two. We set maintenance in a separate agreement before the build starts.
Technologies
- React Native
- TypeScript
- Swift
- Kotlin
- REST and GraphQL
- APNs and FCM
- Backend chosen per project
- App Store Connect
- Google Play Console
Frequently asked questions
How much does it cost to build a mobile app?
Scope sets the figure: the number of screens and roles, offline mode, payments and integrations. You get the quote and the schedule after discovery, before anything is signed.
How long does mobile app development take?
3–5 weeks to the first working version, once scope is agreed. A full app with payments and offline mode is usually 2–4 months. Store review is added on top, and Apple sets that timing.
Native or cross-platform — which should you pick?
Cross-platform for most business apps: one codebase and one fix that reaches both stores. We go native for graphics, real-time camera work and brand-new system APIs. The call comes after we read the feature list.
Do you publish the app to the App Store and Google Play?
Yes, publishing is on us. We prepare the listings, configure certificates, submit the build for review and answer the reviewers. Developer accounts are registered to your company.
What if I already have a backend or a web app?
We connect to what you already run. If the backend exposes an API, we build only the mobile layer and add whatever endpoints are missing. Screens are redesigned for iOS and Android guidelines.
Do I get the source code?
Yes, from the first day of work. Code lands in a repository on your account, along with architecture docs, a release runbook and the store console accounts. Another team can take it over.
What does post-launch support include?
Crash monitoring, bug fixes, dependency updates and the releases forced by new iOS and Android versions. Those ship every year, and without them an app stops working over time. Feature work is quoted separately.