The basic path: Xcode, Swift, and the App Store

Building an iOS app means writing code in Swift (Apple's programming language), testing it in Xcode (Apple's free development environment), and then submitting it to the App Store for review before users can download it. You need a Mac computer to develop iOS apps — you cannot do it on Windows or Linux. You also need an Apple Developer Account, which costs $99 per year and is required to submit apps to the App Store.

The process takes weeks or months depending on how complex your app is. A simple app with one screen and basic features might take a few weeks if you already know Swift. A more complex app with multiple screens, data storage, and network connections typically takes several months. The App Store review process itself takes 24 to 48 hours in most cases, though Apple can reject your app and ask you to fix things before it goes live.

You have two main routes: learn to code yourself, or hire a developer. Learning takes time but costs nothing upfront. Hiring a developer costs money but moves faster if you have a clear idea of what you want built.

Key Takeaways

  • You need a Mac computer, Xcode (free), Swift knowledge, and a $99 annual Apple Developer Account to build and submit iOS apps.
  • Simple apps take weeks to build if you know Swift; complex apps take months, and the App Store review process adds another 1 to 2 days.
  • Learning Swift yourself through free resources like Apple's official tutorials and Swift Playgrounds takes several months of consistent practice.
  • Hiring a developer costs $5,000 to $50,000 depending on app complexity, but moves faster if you have a detailed specification of what you want.
  • Your app must follow Apple's App Store Review Guidelines, which prohibit certain features like unannounced data collection, misleading claims, and broken functionality.

Learning Swift and Xcode yourself

If you want to build your own app, start with Swift Playgrounds, a free iPad or Mac app that teaches Swift through interactive lessons. It requires no prior coding knowledge and takes about 2 to 4 weeks to work through if you spend a few hours per week on it. After Playgrounds, move to Apple's official Develop in Swift curriculum, which is free and teaches you how to build real iOS apps in Xcode.

Xcode is the tool where you actually write code and test your app. It is free to download from the Mac App Store. The learning curve is steep — expect 3 to 6 months of regular practice before you can build a functional app on your own. YouTube channels like Hacking with Swift (run by Paul Hudson) and Stanford's CS193P (a free university course) are widely used by people teaching themselves iOS development.

You will also need to understand how to store data (using Core Data or a database), make network requests (to fetch information from the internet), and handle user input. These are separate skills that take time to learn. Many people spend 6 to 12 months learning before they feel confident enough to ship a real app.

Hiring a developer or agency

If you do not want to learn to code, you can hire someone. Freelance iOS developers on platforms like Upwork and Toptal typically charge $50 to $150 per hour. A simple app (one screen, basic features, no backend server) might cost $5,000 to $15,000. A medium app (multiple screens, user accounts, data storage) costs $15,000 to $40,000. A complex app (real-time features, payments, heavy backend work) costs $40,000 to $100,000 or more.

Before you hire, write down exactly what your app should do. List the screens, the buttons, what happens when someone taps each button, and what data needs to be stored. This document (called a specification or wireframe) helps a developer give you an accurate price and timeline. Without it, you will get vague estimates and scope creep — where the project keeps expanding and the cost keeps rising.

Agencies (companies that employ multiple developers) typically cost more than freelancers but offer project management and quality assurance. They are useful if your app is complex or if you need ongoing support after launch. Freelancers are faster and cheaper for simple apps but require more hands-on management from you.

Setting up your development environment

You need a Mac running the current or previous version of macOS. You cannot develop iOS apps on an older Mac — Apple regularly drops support for older hardware. Check Apple's system requirements before you buy.

Download Xcode from the Mac App Store. It is about 12 GB and takes 30 minutes to an hour to install. You will also need to create an Apple ID (free) and an Apple Developer Account ($99 per year). The Developer Account is what lets you test your app on a real iPhone and submit it to the App Store.

Once you have Xcode installed, you can connect a real iPhone to your Mac via USB and test your app on it. This is important — the simulator (a fake iPhone that runs on your Mac) is useful for quick testing, but you need to test on a real device before you submit to the App Store, because the simulator does not catch all bugs.

Building your first app: what to expect

Start small. Your first app should have one main screen, a few buttons, and maybe a way to save simple data. Do not try to build Instagram or a multiplayer game. A realistic first project is something like a to-do list app, a tip calculator, or a weather app that shows information from a public API.

Expect to spend time on things that seem simple but are not. Saving data to the phone, handling network requests, and making the app look good on different iPhone sizes all take longer than you think. You will also spend time debugging — finding and fixing mistakes in your code. This is normal and happens to professional developers too.

Once your app works, you need to write a description, take screenshots, and create app store listing information. This takes a few hours. Then you submit to the App Store and wait for review. Apple checks that your app does what it claims, does not crash, and follows their guidelines. Most apps are approved within 24 to 48 hours.

App Store Review Guidelines and what gets rejected

Apple rejects apps that crash, that claim to do something they do not do, that collect data without permission, or that violate their guidelines. Read the App Store Review Guidelines before you submit — they are public and available on Apple's website. Common rejection reasons include: the app crashes on startup, the app asks for permission to access the camera but never uses it, the app contains broken links, or the app promises a feature that does not work.

You cannot charge users through your own payment system — you must use Apple's in-app purchase system, and Apple takes 30 percent of the revenue. This is a hard rule. You also cannot collect personal data (like location, contacts, or health information) without explicitly asking permission and explaining why you need it.

If your app is rejected, Apple tells you why. You fix the problem, resubmit, and it goes back into the review queue. Most rejections are fixable in a few days. Resubmission is free and unlimited.

Maintenance and updates after launch

After your app launches, you need to maintain it. Apple releases new versions of iOS every year, and your app needs to stay compatible. This usually means updating your code once or twice a year. If you do not update, your app may stop working on new iPhones or new iOS versions.

You also need to fix bugs that users report. If your app crashes for someone, they will leave a bad review, and bad reviews hurt your visibility in the App Store. Plan to spend a few hours per month on maintenance, or hire someone to do it for you.

If you built the app yourself, maintenance is your responsibility. If you hired a developer, clarify upfront whether they will provide support after launch and for how long. Some developers include 30 days of free support; others charge hourly rates for updates.

Frequently Asked Questions

Can I build an iOS app on Windows?

No. Xcode only runs on Mac. You need a Mac computer to develop iOS apps. You cannot use Windows, Linux, or a web-based tool to build native iOS apps. If you want to build an app that works on both iOS and Android, you can use cross-platform tools like React Native or Flutter, but these require different skills and have their own trade-offs.

How much does it cost to build an iOS app?

If you build it yourself: $99 per year for the Apple Developer Account, plus the cost of a Mac if you do not have one. If you hire a developer: $5,000 to $100,000+ depending on complexity. A simple app costs $5,000 to $15,000. A medium app costs $15,000 to $40,000. A complex app costs $40,000 or more.

How long does it take to learn iOS development?

If you have no coding experience, expect 6 to 12 months of regular practice before you can build a functional app. If you already know another programming language, 3 to 6 months is more realistic. The App Store review process adds 1 to 2 days after you submit.

Do I need to know Swift before I start?

No. Swift is designed to be beginner-friendly. You can learn Swift and iOS development at the same time using Apple's free resources like Swift Playgrounds and the Develop in Swift curriculum. Most people start with no coding experience.

What happens if the App Store rejects my app?

Apple tells you why it was rejected. You fix the problem and resubmit. Resubmission is free and unlimited. Most rejections are fixable within a few days. Common reasons include crashes, broken features, or misleading descriptions.