Mobile App Development
We build mobile apps for iOS and Android — one codebase, both platforms, store release included.
From idea to store, handled end to end
Most mobile projects suffer from coordination, not code: design sits with one vendor, development with another, store submission with a third. We run the whole process in one place — from scoping to App Store and Google Play release.
We handle the backend as well. Since software development and server infrastructure are already part of what we do, the API, database and hosting never become someone else's problem.
// What we build
The whole application: interface through store release.
iOS & Android
One codebase, both platforms. The same features, with an interface that feels native on each store.
API & Backend
We write the services your app talks to: REST APIs, database design, authentication and server setup.
Push Notifications
Notification infrastructure that brings users back — segmented delivery, scheduling and delivery reporting.
Integration With Your Systems
Data exchange with your CRM, accounting, e-commerce or internal software. The app fits on top of what you already run.
Store Submission
Developer account setup, store listings, screenshots, the review process and version updates.
Maintenance & Releases
OS updates are tracked before they break anything; bug fixes and new versions ship on a plan.
// How we work
Five steps, visible progress at each one.
Scoping
We clarify who the app serves and which problem it solves, then produce a feature list, platform decision and a realistic timeline.
Design and Flow
Screen flows and interface design. You see a clickable version of the app before development starts.
Development
Frontend and backend progress in parallel. Test builds land on your phone at every stage so you can follow the work.
Testing and Store Review
Testing on real devices, performance and crash checks, then store submission and the review process.
Post-Launch Support
Usage data, error tracking and version updates. We stay involved after the app is live.
// Who is this service for?
For businesses whose contact with customers or field teams happens through a phone.
Zep Bilisim is a UK-registered IT solution partner that has served businesses across Turkey through its Istanbul branch since 2020, providing web design, software development, SEO and IT support.
// Frequently Asked Questions
It depends on scope. A focused app takes 6-10 weeks; a multi-user project with integrations can run 4-6 months. We give you a firm timeline at the end of scoping and run the project against it.
No. Because we use a single codebase, both platforms come out of one development process. Only the store accounts carry their own fees (Apple annually, Google once).
Yes. We can bring data from your site or internal software into the app. If no API exists, we build it — software development is already one of our services.
Yes. From the developer account to store copy, screenshots and the review process, we handle release. The account is opened in your name; the app is always yours.
OS updates affect apps every year. Under maintenance we track those updates, keep the app working and ship new versions on a schedule.
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