Hybrid mobile apps are similar to conventional apps in that they are installed on a device. What differentiates them is that they gain components from native apps, for particular platforms such as IOS or Android, apps are built with elements from web apps, app development websites are applications that are not installed on a digital device but can be viewed over the Internet. Hybrid apps are positioned in a native container that uses a mobile Web View object. When the app is used, this displays website content thanks to the use of new web languages. When you open the app the related data comes on the screen. Hybrid apps can also rely on platforms that offer JavaScript APIs if those procedures are called within a Web View.
Advantages 
Hybrid apps offer a certain number of advantages:
 It can combine user experience with an active development cycle and moderate costs. Hybrid applications Evade the margins of any App Store, when a new update comes the app takes the time to launch it which is generally between 1 to 7 days. Hybrid apps, therefore, offer a great advantage for developers who want to update their app often as it is not necessary to withdraw the new version of the alterations that haven’t touched native code. The hybrid app helps with finding resources, most of the applications have an iOS version and an Android version. They are created with the resulting programming language, which is either Objective-C or Java. Web developers (HTML, JavaScript, and CSS) may employ hybrid apps to leverage their expertise in programming languages. This simplifies the process of locating resources for developing a hybrid app. Another advantage of hybrid apps is that the code from the web app component may be reused: the code is written once and deployed across all mobile app development services platforms. The most particular and prospering benefit of hybrid applications is that it reduces the time and cost and is way more beneficial in comparison with native apps.
Disadvantages 
A limited user interface: hybrid apps have a design that doesn’t give you a very broad view. The user interface isn’t as all in one as in the native apps. For example, 3D interference is also restricted because hybrid applications use web views.
The inability or impossibility of fully utilizing the capabilities of the platforms. Each platform, iOS or Android, has its own set of capabilities that a developer would want to make use of. In this instance, a hybrid app will employ a combination of platform-specific plugins and code. This further makes the e-commerce app development project complex. Slower performance and transition between pages also happen. the Dependency on the browser’s speed.
Consequences of Testing
Testing a hybrid app can be done in an alike way just like any web application. Scripts will be developed for each test case, and the test stages appear to be simpler at first look. When a program incorporates native code, as is usually the case, complexity arises. As a result, each test case will have numerous test scripts, each written in the local language of the platform where the tests must be run. Bugs that may occur on individual platforms must be addressed while keeping the versions synced. The Manual tests for a hybrid app or on a native app are different from each other. The testing strategy is written in light of this difference. the effort, the type of tests, and the steps will have to be modified to address the graphical aspects thoroughly.
The difficulty with manual testing will thus be to ensure that the user experience is as fluid as possible. The selection between a native app and a hybrid app is entirely technological and is only an internal and organizational one. It should have no effect or limit on the users.
The functional testing will also need to be more comprehensive, especially concerning click zones, size, and functionality. Another factor that might have an influence on mobile behavior, such as lost data or a change in coordinates on the web app component. This is an important consideration.

Hybrid Application: Advantages, limitations, and consequences of testing.