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Articles/Getting Started
Getting Started/2026-03-20Beginner

Build Your First App with Rork in 30 Minutes — Complete Beginner Guide

プログラミング経験ゼロでも、Rork を使えば30分でモバイルアプリが作れます。アカウント作成から、アプリ設計、プレビュー、共有までを初心者にも分かりやすく丁寧に解説。

Rork374Beginner730 MinutesApp Development28No-Code14Getting Started2202620

Build Your First App with Rork in 30 Minutes — Complete Beginner Guide

Wait, hold on.

"Can I really build an iPhone or Android app myself?"

You're right to be skeptical.

But here's the thing: with Rork, even without any programming experience, you can build a working mobile app in 30 minutes.

Sounds impossible? Let's prove it.

Setup Phase: 5 minutes

1. Sign Up for Rork

Go to www.rork.app in your browser.

Click "Sign Up" in the top right.

Enter your email address → create a password → confirm via email → done.

2. Check Your Email

Rork sends a confirmation email. Click the verification link.

Log in.

You'll see something like "Let's create your first app!"

Step 1: Decide What to Build (1 minute)

You might think "I should plan carefully before starting."

Actually, with Rork's simplicity, the opposite is true. Decide quickly, then build.

For this guide, we'll build a simple weather app.

What it does:

  • User enters a city name
  • Clicks "Search"
  • App displays the weather for that city

Simple, right?

"But won't I need to handle APIs and..."

Don't worry. Rork handles all that for you.

Step 2: Create Your App Structure (3 minutes)

Click "Create New App"

Enter app name: "Weather App"

Choose platform: "iOS & Android" (it works on both)

Select template: "Blank" (start from scratch)

Click "Create"


The Rork editor opens. You'll see two main areas:

Left Side: "Components" Panel

All the building blocks you need: buttons, text inputs, images, etc.

Right Side: "Canvas"

Your app's screen. It starts blank.

Step 3: Build the User Interface (8 minutes)

3-1. Add a Title

Drag "Text" from the left panel to the canvas.

You'll see "Hello" appear. Double-click it to edit: change it to "Weather Finder"

Make the text bigger and change the color to blue.

3-2. Add Input Field

Drag "Text Input" from the left to your canvas.

Set the placeholder to "City name" (the light text that appears inside)

3-3. Add a Button

Drag "Button" to the canvas.

Change the text to "Search"

Make it orange so it stands out.

3-4. Add Results Display Area

Drag another "Text" element to the canvas.

This is where the weather results will appear.

Set it to "Weather will display here"

Result

Your canvas now shows: title, input field, button, and results area.

The design isn't perfect yet, but that's okay. Function first, beauty second.

Step 4: Make It Work — Add Logic (12 minutes)

Here's where the magic happens.

You'll define what happens when users click the button.

4-1. Set Up Button Click Action

Click the "Search" button on your canvas.

In the properties panel on the right, find "On Click"

Click "Add Action"

4-2. Call an API

From the action menu, select "Call API"

An API is simply a request to an online service for data. Weather data comes from OpenWeatherMap, a free service.

Enter this API URL:

https://api.openweathermap.org/data/2.5/weather?q={city_input}&appid=YOUR_API_KEY

You need to get YOUR_API_KEY:

  1. Go to OpenWeatherMap's free signup
  2. Copy your API key
  3. Replace YOUR_API_KEY with your actual key in the URL above

Paste this URL into Rork.

4-3. Display the Data

Now you need to show the weather results on screen.

In Rork's action settings, select "Set Text"

Point it to your results text element

Display the API response like this:

City: {api_response.name}
Temperature: {api_response.main.temp}°C
Condition: {api_response.weather[0].description}

Rork automatically parses the API response and extracts the data.

4-4. Test It

Click the Search button on your canvas.

Type "Tokyo"

Click "Search"

…wait…

"City: Tokyo, Temperature: 15°C, Condition: Cloudy"

It works!

You didn't write any API code. You didn't build complex logic. Yet your app is functional.

Step 5: Styling (3 minutes)

Your app works, but the look needs polish.

5-1. Set a Background

Click the canvas background.

Change the background color to light blue.

5-2. Arrange Layout

Position elements nicely:

  • Title at the top
  • Input and button in the middle
  • Results at the bottom

5-3. Done

Now it actually looks like an app.

Step 6: Preview (1 minute)

See the "Preview" button in the top right?

Click it.

A smartphone simulator launches.

Try entering different cities: "Paris," "New York," "Sydney"

Watch as weather appears for each one.

This is a real, working app.

Step 7: Share It (1 minute)

Show Friends

Click "Share" → generate a URL → send to friends

They can try your app on iOS or Android without installing anything.

Publish to App Store

The Pro version of Rork lets you publish directly to the App Store. You can also export the code and submit it yourself.


You're Done. What's the Time?

Look at the clock.

Most beginners complete this entire process in under 30 minutes.

Pretty amazing, right?

"What About More Complex Apps?"

The weather app is just a demo.

Rork can handle much more:

Example: Task Manager App

  • User enters a task → saves it → displays in a list → marks as complete → deletes it

In Rork: 1-2 hours.

Example: Simplified Social Network

  • User registration → create posts → feed display → like button

In Rork: 3-4 hours.

What would take professional developers 1-2 weeks takes hours with Rork.

Common Questions

Q: Do I really need zero programming experience?

A: Yes. Rork uses a visual interface. Rork generates the code automatically.

Q: Is the quality good enough?

A: For apps you're building for yourself or your community, absolutely. Enterprise-scale apps might need expert refinement.

Q: Can I sell apps I build with Rork?

A: Yes. You can sell them, use them in your business, or give them away. Just check the API terms (OpenWeatherMap's free plan has commercial restrictions).

Q: Does it work offline?

A: Rork apps are cloud-based. You need an internet connection.

Q: What about security?

A: Rork implements standard security. For sensitive data, additional security audits are recommended.

A Democratization Moment

In 2015, you needed programming school to build apps.

In 2025, you still needed to write code.

But in 2026, with tools like Rork, anyone with an idea can build an app.

Your imagination becomes reality in 30 minutes.

Give it a try.

What's your first app going to be?

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