The leaders of e-commerce via mobile apps are clothing and electronics, as well as cosmetics. In general, if you know the audience of your business, this will be the key to sales success in any product category.

To understand whether your company needs to develop a mobile application, analyze the following questions:

1. Who are your customers, how often do they use smartphones?
   It may be enough for your business’s target audience to create an adaptive or mobile version of your website. You can track mobile traffic and compare it with the customer journey on the desktop version of the site using Google Analytics tools that need to be connected to your site. It’s worth noting that users spend 20 times more time in a mobile app than on a desktop version or on a mobile-friendly website.
2. What tasks do you want to solve with your mobile app?
   Think about how you plan to promote your mobile app. How will your customers find out about it? A newly created mobile application will require additional advertising, linking to your website, integrations, and promotion in the App Store and Google Play. Another question: why will users want to download the app? Perhaps it will be a benefit in the form of discounts, a loyalty program, a convenient personal account where you can track purchases and receive bonuses.
3. What to choose: a social media store or mobile app development?
   Mobile applications are more personalized and automated, the functionality is developed “for the type of client”. Also, in the application, the client can place an order independently, without the help of managers. Social networks are rather limited in terms of personalization and functionality. They can be used to sell small volumes of goods.
4. How fast will the mobile app pay off?
   To forecast sales through the app, use the analytics of your sales through your existing online store. Conduct a survey among your customers. This will help you understand whether your business is ready to launch a mobile app and how much revenue sales from the app will bring.

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The main language for creating SPAs is JavaScript. You can create a small one-page application using the jQuery library. However, this option is not the most optimal for large projects. It is better to use the Vue, React, or Angular frameworks.

MPA
MPA (Multi Page Application) is a traditional multi-page web application. When a user interacts with a website, new HTTP pages are loaded. Therefore, data exchange is slower than in SPA. Especially if there are problems with the Internet connection or website hosting.

PWA
A progressive program is close to native computer and mobile applications in terms of its capabilities, functions, and quality of user experience.

There is no clear boundary between non-PWA and PWA applications. But a number of characteristics can be identified.

In particular, a PWA must contain a proxy layer (Service Worker) and a Web App manifest. Essentially, the browser acts as a virtual machine to run web applications, just as Windows runs exe files and Android runs apk files.

Service Worker is a proxy layer between the server and client side. It is located in the browser, and all requests go through it. Thus, there are two front-end layers: one contains the interface and the other the logic. This allows you to run full-fledged applications for the Internet. Service Worker is usually written in pure JS.

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The main advantages of web applications:

• web applications can be used on any operating system (Linux, Mac, Windows), as they all support modern browsers;
• due to the fact that a web application uses the same code as a desktop application, it is much easier to maintain;
• the application is easier to program because it does not involve a lot of work with PC elements (kernel, processor, video card);
• unlike mobile applications, web applications do not require approval from any platforms to release their program;
• web applications are a more economical option for any enterprise
• because web applications do not require subscriptions or licenses, but can be used as a SaaS service, which is much cheaper.

How the web application works

Let’s take a closer look at how the web application itself works. The user creates a request that will have to be sent to the web server using a request in an Internet browser or in the web application itself.

Then this request should be sent to the web server assigned to this web application. After the server receives the request, it goes to the database to generate a response to the user’s request. The final stage is sending the necessary data to the front-end of the application and then displaying it to the user.

And so it repeats over and over again as long as the user creates requests in the web application. It is worth noting that the more and more complex the requests are, the longer it will take to send a response from the server.

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