App Development Tools – Want to create your own mobile app or website? You don’t have to start from zero! There are special tools that make coding easier and faster. We picked the 5 best ones that real users love (they all have at least 10 reviews and 4.5+ stars). Here they are in simple words, explained like you’re 14-15 years old.

1. ASP.NET Zero

  • What it is: A helper tool for people who use Microsoft’s Visual Studio to build apps.
  • Cool things it can do:
    • Makes login pages, user roles, and multi-language apps super easy.
    • Helps you build apps for iPhone and Android at the same time.
    • Lets many customers (tenants) use the same app with their own logo and settings.
  • What users love: Everything works right away without extra coding.
  • What they wish was better: Automatic updates instead of doing it by hand, and better instructions.
  • Best for: Teens or companies who already like Microsoft tools and .NET.

2. GitHub

  • What it is: The most popular place to save and share code (like Google Drive but for programmers).
  • Cool things it can do:
    • Work on the same project with friends from anywhere.
    • Automatically test and upload your app.
    • Warns you if your code has security mistakes.
  • What users love: Super fast and easy to invite teammates.
  • What they wish was better: More free storage for big files and fewer bugs in the desktop app.
  • Best for: Everyone! It’s free for small projects and has a paid version for big teams.

3. Google Cloud Platform (GCP)

  • What it is: Google’s giant computer in the sky that runs your app for you.
  • Cool things it can do:
    • Run apps written in almost any coding language.
    • Add or remove power (like adding more RAM) whenever you need.
    • Connects easily with GitHub.
  • What users love: You only pay for what you use, and the control dashboard is easy.
  • What they wish was better: Cheaper graphics cards and fewer tiny bugs.
  • Best for: Any size project—perfect if you already use Gmail or Google Drive.

4. IntelliJ IDEA

  • What it is: A super-smart code editor made by JetBrains (has a free version and a paid one).
  • Cool things it can do:
    • Writes some of the code for you (auto-complete on steroids).
    • Helps you find and fix mistakes fast.
    • Works great with Java, Kotlin (used for Android), and many other languages.
  • What users love: Makes coding feel faster and less annoying.
  • What they wish was better: Uses less computer memory so it doesn’t slow down your laptop.
  • Best for: People making Android apps or learning Java/Kotlin in school.

5. SpreadsheetWEB

  • What it is: Turns Microsoft Excel sheets into real web apps—no coding needed!
  • Cool things it can do:
    • Drag and drop to make forms, calculators, or dashboards.
    • Anyone who knows Excel can build an app in hours.
    • Saves all the data online safely.
  • What users love: Crazy easy and fast to update.
  • What they wish was better: More tutorials and some built-in AI features.
  • Best for: Students, teachers, or small businesses who love Excel and want an app without learning to code.

Quick Summary Table (Which one should YOU try?)

Tool Need to code? Best if you… Free version?
ASP.NET Zero Yes Like Microsoft tools No
GitHub Yes Want to work with friends Yes
Google Cloud Yes Want powerful servers Yes (with limits)
IntelliJ IDEA Yes Make Android or Java apps Yes (Community)
SpreadsheetWEB No Know Excel and want zero coding No (trial yes)