How to Meet Mobile Users’ Expectations from a Mobile App?

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 11:38 am

There are over 5 million apps on the two of the most leading app stores today and this should be enough to give you an idea about the kind of competition that your mobile app faces in reaching out to the customer. With this great number of mobile apps in the market most of the people today are presented with multiple app options for each problem that they might ever encounter or requirement that they might have. Though there is much talk about acquiring new users and people have been looking at [...]

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How to Re-engage Customers in Your Mobile App? (10 Awesome Ways)

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 11:00 am
How to Re-engage Customers in Your Mobile App? (10 Awesome Ways)

In this post, we are going to talk about why users stop using a mobile app they downloaded and then suggest 10 greatly effective ways in which you can bring them back to your app! This is a world of instant gratifications and many diversions! In this market it is becoming increasingly difficult to retain the customers for long. I have compiled some statistics so that you can understand what it is like for a mobile app developer who is trying to retain their app users: About 25% of t [...]

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1x, 2x and 3x Image Scaling on iOS Explained

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 10:58 am

How does image scaling work on iOS, and what does @2x mean? Different iPhone and iPad models have different screen sizes and pixel densities (PPI). This affects the graphics assets, images and artwork you’re going to use in your iOS app. In this tutorial, you’ll learn more about: The difference between points and pixels When to use 1x, 2x and 3x image scaling File naming conventions with @2x and @3x How to keep working with different screen resolutions simple Recommended tools and [...]

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Initializers & init() Explained in Swift

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 10:40 am

In Swift, an initializer is a special init() function that we use to create objects of a particular class, struct or type. They’re used to “construct” an instance of the given type. In this tutorial, we’re going to discuss how initializers work, why they’re needed, and how you can write your own. We’ll focus on the different kinds of initializers, such as convenience initializers, what the consequences are of subclassing, errors you may face in day-to-day iOS development, and much [...]

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@ObservedObject and Friends in SwiftUI

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 10:05 am

In this mobile app development tutorial, we’re going to discuss an approach for 2-way data flow between a web-based JSON resource and changing that data in your app. Getting data, displaying it, and sending changes back. The centerpiece is the @ObservedObject property wrapper, and we’ll also discuss how to use ObservableObject, @Published, @Binding, Combine, MVVM, and much more. Here’s what we’ll get into: How to set up 2-way data flow in a real-world Books app Working with @Obse [...]

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How to Create a Live Streaming App like Twitch?

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 10:02 am
How to Create a Live Streaming App like Twitch?

Live streaming has been around for a long time, but in 2020 as the world was in the throes of a pandemic, live streaming reached new heights. In the entertainment industry, live streaming gained popularity due to the gaming industry. In 2020, global users spent about 482.5 billion hours on live streaming apps, a 35% increase since the last year. Video as a format has gained way more popularity than text, picture, or audio content. People are more likely to watch a live stream than read bl [...]

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How To Generate a Random Unique Identifier with UUID in Swift

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 9:56 am

Random unique identifiers (UUIDs) are super useful in Swift programming. Imagine you’re storing objects in a database, and every object needs a unique ID. The generated ID needs to be unique, universally, across all devices, all users, all objects in the database. How do you generate such an ID? Table of Contents Generating Random Identifiers with UUID What’s RFC 4122? UUIDs: Universally Unique Identifiers UUIDs in Practical iOS Development Further Reading Generating Random [...]

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Get Started with Xcode Playgrounds

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 8:34 am

You can use playgrounds in Xcode to quickly write some Swift code, experiment with new Swift syntax, or work on your Swift algorithms skills. Most of all, playgrounds in Xcode are a great way to learn Swift programming. In this mobile app development tutorial, you’ll learn how to get started with playgrounds in Xcode. I’ll give you a brief overview of Xcode playgrounds, so you can quickly get started with Swift programming. Prerequisites for this tutorial: A Mac with macOS and Xcod [...]

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The Ultimate Guide to No-Code App Development with Appy Pie

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 8:10 am
The Ultimate Guide to No-Code App Development with Appy Pie

In today’s fast-paced digital world, businesses need to adapt quickly—and that includes launching mobile apps to engage customers, streamline operations, or boost sales. However, traditional app development can be time-consuming, expensive, and require technical expertise that many small to medium-sized enterprises don’t have. This is where no-code platforms come in. In this ultimate guide, we’ll explore everything you need to know about no-code app development, with a special focus o [...]

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Escaping Closures in Swift Explained

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 7, 2025 4:34 am
Escaping Closures in Swift Explained

A closure is said to “escape” a function when it’s called after that function returns. In Swift, closures are non-escaping by default. What are escaping closures, anyway? And what do you use @escaping for? Let’s find out! This mobile app development tutorial discusses closures, escaping vs. non-escaping, capture lists and retain cycles, and what that means for practical iOS development. What we’ll get into: What escaping closures are, and why you need them How and when to use [...]

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Map, Reduce and Filter in Swift

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 6, 2025 1:26 pm
Map, Reduce and Filter in Swift

In Swift you use map(), reduce() and filter() to loop over collections like arrays and dictionaries, without using a for-loop. The map, reduce and filter functions come from the realm of functional programming (FP). They’re called higher-order functions, because they take functions as input. You’re applying a function to an array, for example, to transform its data. Swift’s Map, Reduce and Filter functions can challenging to wrap your head around. Especially if you’ve always coded [...]

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How To: Pass Data Between Views with SwiftUI

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | Last Updated on February 7th, 2025 1:54 pm
How To Pass Data Between Views with SwiftUI

How do you pass data between views in SwiftUI? If you’ve got multiple views in your SwiftUI app, you’re gonna want to share the data from one view with the next. We’re going to discuss 4 approaches to do so in this app development tutorial! Here’s what we’ll get into: Passing data between views using a property Working with @State and @Binding Passing data via the view’s environment Passing data via @ObservedObject and @StateObject Table of Contents Passing Data [...]

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10 Cardinal Steps to Beta Test Your Mobile App

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 6, 2025 12:51 pm
Steps to Beta Test Your Mobile App

App Builder Appy Pie, February 22, 2018: For a good app developer of any standing in the field, the importance of a thorough beta testing need not be stressed upon. Like any other product, your app too needs to be tested for any kind of flaws (bugs & crashes) before making it available to the customers. To make sure that you get rid of all your hidden bugs and problems within the app, beta testing is the only way to go. Beta testing is the secret for the best app quality, indeed. There ar [...]

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MVVM and SwiftUI

Yuvraj Singh
By Yuvraj Singh | February 6, 2025 12:49 pm

SwiftUI is not MVVM, but they go really well together. What’s the Model-View-ViewModel (MVVM) architectural pattern and how do you use it? In this mobile app development tutorial, we’ll discuss how you can use MVVM to better organize your app’s code. Here’s what we’ll get into: How to see iOS development with SwiftUI through the lense of MVC and MVVM All the roles: models, views, controllers, view controllers, ViewModels Why SwiftUI and [...]

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An Extensive Guide to WKWebView

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 6, 2025 12:44 pm
An Extensive Guide to WKWebView

You use WKWebView to display interactive web content in your app. Ideal for displaying HTML markup, styled text content, or complete web pages. It’s like having a small web browser right in your app! In this tutorial you’ll learn: How to use WKWebView with Swift How to respond to events and user interaction with delegation Why WKWebView is useful, and in what scenarios Some quick tips, like getting the web page content size Table of Contents L [...]

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How To Find an Item in an Array in Swift

Yuvraj Singh
By Yuvraj Singh | February 6, 2025 12:32 pm

How do you find an item in an array in Swift? Let’s find out! In this mobile application development tutorial you’ll learn how to use the various generic functions to find matching items in an array. We’ll get into: The algorithm that’s used for finding items in an array How you can find the first and last indices of matching array items How to find items if you don’t exactly know what you’re looking for, with functions like first(where:) How to find all items in an array that [...]

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How To Download, Install and Update Xcode

Yuvraj Singh
By Yuvraj Singh | February 6, 2025 12:21 pm

Xcode is the Mac app that developers use to create apps for Apple’s platforms, like iOS. In this tutorial, you’ll learn how you can download and install Xcode on your Mac. Here’s what we’ll get into: 3 approaches to download and install Xcode on your Mac Tips and tricks to keep your Xcode up-to-date How to install Xcode betas on your Mac Table of Contents How To Download Xcode for macOS Installing Xcode on Mac Updating Xcode to The Latest Version Getting Xcode Beta Versio [...]

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Appy Pie’s Android App Reaches The Extraordinary Milestone of 5 Million Downloads

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 6, 2025 12:19 pm
Appy Pie's Android App Reaches The Extraordinary Milestone of 5 Million Downloads

Buoyed by positive customer response and powerful features, Appy Pie has reached a tremendous feat by hitting 5 million installs of its App Maker on Google Play Store. With more than 200 unique features, Appy Pie offers users the ability to create dynamic apps based on their needs, within their budget. The apps built with Appy Pie’s App Maker are fast, light and can deliver content seamlessly. Install Appy Pie on your Android Device! Appy Pie’s Android App has captured the imagina [...]

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Scene Delegate vs. App Delegate Explained

Abhinav Girdhar
By Abhinav Girdhar | Abhinav Girdhar - Founder and CEO of Appy Pie | February 6, 2025 12:17 pm
Scene Delegate vs. App Delegate Explained

What does the SceneDelegate class in your iOS project do? In Xcode, the scene delegate and/or app delegate is added automatically for the default iOS app project template. What are these delegates for, exactly? In this tutorial, we’ll dive into the scene and app delegates in Xcode, and how they affect SwiftUI, Storyboards and XIB based UIs. You’ll learn about: The app delegate and scene delegate How the they work together to bootstrap your app How to set up your app programmatical [...]

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Struct vs. Class in Swift Explained

Yuvraj Singh
By Yuvraj Singh | February 6, 2025 12:05 pm

Are you developing your mobile app and wondering what’s the difference between classes vs. structs? They’re so alike! It’s best to use structs by default, but why? And when should you use classes, then? In this tutorial, we’re going to take a look into structs vs. classes. When do you use a class, and when do you use a struct? What’s the difference between a struct and a class, and how does that affect practical iOS development? Structs are a fundamental aspect of Swift, and they [...]

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