Shopify application is a plug-in / an extension of the functionality of the store. It’s installed in the admin. panel of your Shopify website and directly from admin dashboard you can fully control the setting and other things that are included in the functionality.
Let's see in more details for why a private and public applications are using
Public apps must be uploaded to the Shopify App store, and anyone can download and install them directly from there.
Therefore, we recommend thinking about the marketing component in advance, optimization for the Shopify App Store search engine, in order to increase visibility. And most importantly - your public app should have a clear USP (Unique Selling Proposition).

Private applications are developed purely for your needs, and you are the only one who can use them.
Server
It is necessary to have a separate server on which the application will be stored and run interacting with the Shopify APIFramework
The programming language that will work with the Shopify API - we use a reliable, fast and secure PHP framework - Laravel.Technical support
Потрібна попри успішне тестування та успішну роботу чи то у приватному, чи то публічному режимі. Середовище Shopify API періодично оновлюється і певні методи чи функції, з якими працює ваш додаток можуть потребувати втручання з боку розробників.Here are examples of our Shopify apps
FAQ
In fact, it all depends on the requirements and functionality of the application itself. Even basic things, such as the transfer of certain information to other services, depends on whether the same service has a documented API. Only after receiving information from you will we be able to analyze the task and evaluate its implementation. The more functionality is needed, the more time it takes to implement it.
It is possible if you are free and also have skills in UX/UI design or know how to use the Shopify Polaris design system, Front-End development for layout and although knowledge of one of the frameworks, for example React.js , Back-End development - for example PHP - frameworks, testing, working with servers.
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