Mobile App Development

Native or cross-platform? A practical guide to building a mobile app

Short answer: most business apps are best built cross-platform (for example with React Native or Flutter), which ships iOS and Android from one codebase. Choose fully native only for heavy graphics, advanced device features or very high performance. A first release, including its backend, usually takes 8–12 weeks.

Published6 Oct 2026
Reading time7 min read

An app is more than screens on a phone. Behind almost every useful app is a backend: an API, a database, an admin dashboard, push notifications and analytics. Planning that part properly is what separates an app that grows from one that gets rebuilt.

Native or cross-platform?

  • Cross-platform (React Native, Flutter): one codebase for iOS and Android, faster delivery and lower maintenance. Right for most commerce, booking, service and content apps.
  • Native (Swift for iOS, Kotlin for Android): best for games, AR, heavy media processing or deep use of device hardware, at roughly twice the build and maintenance effort.
  • Progressive web app: a mobile-friendly web app installable from the browser, a good first step when you don't need the app stores.

What a first release includes

  1. Discovery and user flows for the main journeys (sign up, browse, buy or book, account).
  2. UI design for iOS and Android, in Arabic and English if you serve both audiences.
  3. The app itself, plus the backend API, database and an admin dashboard.
  4. Integrations: payments, maps, SMS or WhatsApp notifications, analytics.
  5. Testing on real devices, a security review, and App Store and Google Play submission.

Timeline and cost drivers

A focused first release usually takes 8–12 weeks. The biggest cost drivers are the number of user types (for example customer, driver and admin), real-time features such as chat or live tracking, payments, offline support, and integrations with existing systems. Budget for ongoing maintenance too: both stores require regular updates for new operating-system versions.

App store requirements to plan for

  • Developer accounts for Apple and Google, registered to your company.
  • A privacy policy and accurate data-collection declarations in both stores.
  • Account deletion from inside the app if users can create accounts.
  • Review time: Apple's review can add a few days to each release.

Mobile app security

Most serious mobile app vulnerabilities are in the backend API, not the app: missing authorisation checks, exposed keys and weak session handling. We build and test against the OWASP Mobile Application Security Verification Standard (MASVS), and test the API with the same rigour as the app.

Users judge an app by its screens. Its success is decided by the backend nobody sees.
FAQ

Frequently asked questions

How long does it take to build a mobile app?

A focused first release, including the backend and admin dashboard, usually takes 8–12 weeks. Apps with real-time features, several user types or complex integrations take longer.

Should I build for iOS or Android first?

In Egypt Android has the larger user base, while iOS users often spend more. Building cross-platform lets you launch on both at the same time for little extra effort.

React Native or Flutter?

Both are mature. React Native shares skills and code with React web apps; Flutter offers very consistent UI. The team's experience and your existing systems usually decide.

Does CYBEROCO develop mobile apps?

Yes. CYBEROCO builds iOS and Android apps with React Native, including the backend and admin dashboard, and tests them against OWASP MASVS before launch.

Keep reading

More field notes

Website Development6 Oct 2026 · 7 min read

How much does a website cost in Egypt, and how long does it take?

A focused business website takes 3–5 weeks. Here is what moves the price, and what to ask before you sign.

Read article
Software Development6 Oct 2026 · 7 min read

Custom software or off-the-shelf? How to decide, and what a custom build involves

Buy when your process is standard; build when it is your advantage. A first release usually takes 10–16 weeks.

Read article
E-commerce6 Oct 2026 · 7 min read

How to launch a secure online store in Egypt: platforms, payments and shipping

Pick the platform by catalogue size and how custom your checkout is. A secure store usually takes 5–8 weeks.

Read article
Cyber Security6 Oct 2026 · 7 min read

How much does a penetration test cost, and what should it include?

Cost follows scope: the number of apps, roles, APIs and IPs. A single web app usually takes 5–10 testing days.

Read article
Pen Test Debrief12 Aug 2026 · 6 min read

Three ways we still get into “PCI compliant” web apps

A walkthrough of the logic flaws and misconfigurations that keep showing up in engagements, despite a clean compliance report.

Read article
Incident Response5 Aug 2026 · 5 min read

What the first 60 minutes of a ransomware incident actually look like

Containment decisions, stakeholder communication, and the mistakes that turn a bad day into a bad quarter.

Read article
Research29 Jul 2026 · 5 min read

API authorisation flaws: the gap between “authenticated” and “authorised”

Why so many APIs correctly check who you are, but not what you're allowed to do — and how we test for it.

Read article