You can build an app by learning to code yourself, hiring a developer, using a no-code platform, or outsourcing to an agency — each path trades cost against control and speed.
Building an app starts with deciding whether you want to write the code yourself, pay someone else to do it, or use a tool that doesn't require coding. The route you choose depends on your budget, timeline, and how much control you want over the final product. A solo developer learning from scratch might spend six months to two years building their first app. A hired developer or agency can compress that to weeks or months, but costs thousands to tens of thousands of dollars. No-code platforms let you launch in days, but limit what your app can do.
Before you pick a route, you need to know what you're building: a mobile app for iPhone and Android, a web app that runs in a browser, or both. You also need to decide whether your app needs a backend — a server that stores data and handles logic — or if it can work mostly on the device itself. These choices narrow down which tools and languages make sense for your situation.
Key Takeaways
- Learning to code yourself takes months to years but costs almost nothing; hiring a developer or agency costs thousands to tens of thousands and takes weeks to months.
- No-code platforms let you build and launch in days without writing code, but they work best for simple apps like forms, directories, or basic productivity tools.
- Mobile apps (iOS and Android) and web apps require different tools and skills; building for both platforms usually means more time and money than building for one.
- Most apps need a backend to store user data and handle business logic, which adds complexity and cost whether you code it yourself or hire someone.
- Your first decision should be what your app does and who uses it, because that determines whether you need a developer, a no-code tool, or a combination of both.
Learning to Code and Building It Yourself
If you have time and want to spend almost nothing, teaching yourself to code is possible. You start by picking a language and platform based on what you want to build. For a mobile app, Swift is the language for iOS, and Kotlin or Java are standard for Android. For a web app, you learn JavaScript, HTML, and CSS. Many people start with free resources: YouTube tutorials, freeCodeCamp, Codecademy, or Udemy courses that cost $10 to $50.
The realistic timeline is six months to two years before you can ship a real app, depending on how much time you spend learning and how complex your idea is. You'll spend the first few months on fundamentals — variables, loops, functions, how data moves through a program. Then you learn the specific tools for your platform: Xcode for iOS, Android Studio for Android, or a framework like React or Vue for web. After that comes the hard part: building your actual app, debugging when things break, and learning how to deploy it so other people can use it.
This route works if you're building a simple app, you have months to spare, and you're comfortable with frustration. It doesn't work if you need the app in weeks or if you're building something that requires a complex backend or integration with other services. You also won't have anyone to ask when you get stuck, though communities like Stack Overflow and Reddit's r/learnprogramming can help.
Hiring a Freelance Developer or Small Agency
A freelance developer or small agency can build your app in weeks to a few months and costs $5,000 to $50,000 depending on complexity and location. You find developers on platforms like Upwork, Toptal, Gun.io, or through referrals. The process starts with writing a clear description of what you want: what the app does, who uses it, what platforms it runs on, and what data it needs to store.
Before you hire, you need a scope document or specification that lists features, not just a vague idea. "I want an app like Instagram" is too vague. "Users can upload a photo, add a caption, see photos from people they follow in a feed, and like or comment on photos" is specific enough to get a quote. The developer will ask follow-up questions: Do you need user authentication? Does the backend need to be real-time? Do you want push notifications? Each of these adds time and cost.
Costs vary widely by geography and experience. A developer in Eastern Europe or South Asia might charge $30 to $60 per hour. A developer in North America or Western Europe might charge $75 to $150 per hour. A simple app might take 200 to 400 hours; a medium app might take 600 to 1,200 hours. That means a simple app could cost $6,000 to $18,000, and a medium app could cost $18,000 to $60,000. Larger agencies charge more but often deliver faster and handle more complex projects.
The risk is that you're dependent on the developer's skill and communication. A bad hire can waste months and money. To reduce risk, ask for references, look at their portfolio, start with a small paid trial project, and use a contract that specifies what you're paying for and when payment is due. Also ask who owns the code when the project is done — you want to own it, not license it from the developer.
Using a No-Code or Low-Code Platform
No-code platforms let you build an app by dragging and dropping components instead of writing code. Popular options include Bubble, FlutterFlow, Adalo, AppGyver, and Glide. These platforms handle the backend for you, so you don't have to set up servers or databases. You can launch a working app in days or weeks, and the cost is usually $0 to $500 per month depending on how many users you have.
No-code platforms work best for apps that follow common patterns: a directory or marketplace, a form or survey tool, a simple social app, a productivity tracker, or a booking system. They work poorly for apps that need custom logic, real-time performance, or deep integration with hardware like a camera or GPS. If your app is mostly about displaying data, collecting input, and storing it in a database, a no-code platform can save you months and thousands of dollars.
The tradeoff is flexibility. You can only build what the platform lets you build. If you need a feature that the platform doesn't support, you're stuck. You also depend on the platform staying in business and not changing their pricing or terms. Some no-code platforms let you export your code if you want to move to a different platform or hire a developer to customize it further; others lock you in completely.
A good strategy is to start with a no-code platform to test your idea with real users. If it works and you need features the platform can't provide, you can hire a developer to build a custom version. This way you validate your idea before spending $20,000 on a developer.
Working with a Larger App Development Agency
Agencies are companies with teams of developers, designers, and project managers. They handle everything from design to launch and cost $30,000 to $200,000 or more depending on the project size. You hire an agency when you need a polished product, you want someone to manage the project, or you're building something complex that requires multiple developers working together.
The process with an agency usually starts with a discovery phase where they interview you, research your market, and write a detailed specification. Then they design the app, build it, test it, and launch it. This takes three to six months for a medium-sized app. You'll have regular check-ins and can see progress as they build.
Agencies are better at handling complex projects and managing risk, but they're also more expensive and slower than a freelancer for simple apps. They're a good choice if you're building something for a business, you need it to be high quality, or you want someone to take responsibility if something goes wrong. They're overkill if you're testing an idea or building a simple tool.
Choosing Between iOS, Android, Web, or All Three
Your app can run on iPhone (iOS), Android phones, or in a web browser. Each platform requires different work. Building for iOS only takes less time than building for both iOS and Android. Building a web app is often faster than building a mobile app, but it works differently and reaches people through a browser instead of an app store.
If you hire a developer or agency, building for both iOS and Android costs roughly 1.5 to 2 times as much as building for one platform. You can reduce this cost by using a cross-platform framework like React Native or Flutter, which lets a developer write code once and deploy it to both platforms. The tradeoff is that cross-platform apps sometimes feel less polished than native apps built specifically for each platform.
A web app runs in a browser on any device and costs less to build than a mobile app. The downside is that users have to visit your website to use it instead of downloading an app from the App Store or Google Play. Web apps also can't access some device features like the camera or location as easily as native apps can. For many simple apps, a web app is the fastest and cheapest option.
Understanding Backend Complexity and Cost
Most apps need a backend — a server that stores data, handles user accounts, and runs business logic. A simple app might not need one: a calculator app, a note-taking app that only stores notes on your phone, or a game that doesn't have multiplayer. But if your app needs to sync data across devices, let multiple users collaborate, or connect to other services, you need a backend.
If you hire a developer, the backend adds significant cost and time. A simple backend might add $2,000 to $5,000 and a few weeks. A complex backend with real-time features, payments, or integrations with other services might add $10,000 to $30,000 and several months. No-code platforms include a backend, so you don't have to build one yourself — but you're limited to what the platform provides.
If you're learning to code, building a backend is harder than building the app itself. You have to learn a backend language like Node.js, Python, or Go, set up a database, handle security and authentication, and deploy it to a server. This adds months to your timeline. Many beginners start by building an app that doesn't need a backend, or they use a backend-as-a-service platform like Firebase or Supabase that handles the infrastructure for them.
Frequently Asked Questions
How long does it take to build an app?
A simple app takes two to four weeks with a hired developer, two to four months if you're learning to code, or a few days with a no-code platform. A medium app takes two to four months with a developer, six months to a year if you're learning, or two to four weeks with no-code. A complex app takes four to six months or longer with a developer or agency.
How much does it cost to build an app?
A no-code app costs $0 to $500 per month. A freelance developer charges $5,000 to $50,000 depending on complexity. An agency charges $30,000 to $200,000 or more. Learning to code yourself costs almost nothing but takes months to years of your time.
Should I build for iPhone, Android, or both?
Start with one platform if you're testing an idea or have a limited budget. iOS users tend to spend more money on apps, so many businesses start there. Android has more users globally. A web app reaches both but works differently. If you hire a developer, ask about cross-platform frameworks like React Native to reduce the cost of building for both.
What's the difference between a mobile app and a web app?
A mobile app is downloaded from the App Store or Google Play and runs on your phone. A web app runs in your browser and works on any device. Mobile apps can access phone features like the camera and location more easily. Web apps are faster and cheaper to build but require users to visit a website instead of opening an app.
Can I build an app without knowing how to code?
Yes, using a no-code platform like Bubble, FlutterFlow, or Glide. You drag and drop components to build the app instead of writing code. This works for simple to medium apps but limits what you can build. For more complex apps, you'll need to hire a developer or learn to code.