By Simplyhawk
Application Developer – Introduction, Best And More
Application Developer (or app developer) is a software expert who designs, builds, tests, and updates apps for devices like smartphones, tablets, computers, or the web. They usually focus on one type of device (e.g., Android phones, iPhones, or websites). Their job is to make sure the app works smoothly and meets what users want. App developers work in IT companies and almost every other industry – banks, schools, hospitals, games, shops, etc.
What Does an App Developer Do Every Day?
| Job |
What it Means (Simple Words) |
| Understand client needs |
Talk to the customer and note down exactly what the app should do. |
| Make a prototype |
Build a rough model of the app to show how it will look and work. |
| Write code |
Use programming languages to create the real app on time. |
| Test the app |
Try the app many times to find and fix mistakes before launch. |
| Fix bugs |
Solve errors that appear while using the app. |
| Update the app |
Add new features, improve speed, and release fresh versions. |
| Write manuals |
Create easy guides that explain the code and design for others. |
Skills You Need to Become an App Developer
| Skill |
Why It Matters (Grade 9 Level) |
| Programming Languages |
You write instructions for the phone/computer. • Android: Java or Kotlin • iOS: Swift or Objective-C • Cross-platform: C++, C# |
| Mobile Frameworks |
Tools that let you build one app for both Android & iPhone. Examples: React Native, Flutter, Xamarin – saves time! |
| UI/UX Design |
Make the app pretty and easy to use (buttons, colors, menus). |
| Backend Skills |
Handle the “behind-the-scenes” part: servers, databases, APIs, so the app can save data and talk to the internet. |
| Problem-Solving |
When the app crashes or is slow, you think logically to fix it fast. |
How to Publish Your App
| Platform |
Cost |
Rules |
Extra Info |
| Android (Google Play) |
USD 25 (one-time) |
Follow basic quality guidelines (not strict rules). |
You can also let users download the app directly from your website. |
| iOS (Apple App Store) |
USD 99 per year |
Very strict quality checks. |
Shows users your app is high-quality. You get early access to new iOS updates. |
Quick Recap (Key Points for Grade 9)
- App developers build useful, fun, and safe apps for phones or computers.
- They code, test, update, and make sure the app is user-friendly.
- You need programming, design, and problem-solving skills.
- Android is cheaper and more open; Apple is stricter but respected.
- Start learning Java/Kotlin (Android) or Swift (iOS) and try free tools like Android Studio or Xcode.
