The main reasons for slow mobile applications and how software companies can address them

Too Many Large Images

Images are among the elements that can most often slow down mobile applications when they are loaded and stored improperly.

High-resolution, large images take longer to load from the server and display on the phone screen.

The problem is exacerbated when a single page contains dozens of images, all of which load as soon as the screen is opened.

Using uncompressed images can also increase internet data consumption and storage space and memory usage.

Software companies can address this issue by compressing images while maintaining suitable display quality for mobile devices.

Modern image formats can also be used to reduce file size without significant loss of visual quality.

It is also important to provide different sizes of the same image instead of sending the original, large image to all devices.

A phone that needs a small image should not receive a file designed for a large, high-resolution screen.

Images can also be loaded only when needed, instead of loading all the images on the page at once.

This method, known as progressive loading, helps the screen load faster for the user.

Thumbs can also be used while browsing menus, and the larger image loaded when opening the details.

Excessive Database Queries

Databases are a fundamental part of most mobile applications, but mismanagement can lead to significant slowdowns in screen loading and operational performance.

When an application requests large amounts of data from the database without proper organization, the server needs more time to process the request.

The problem becomes even more pronounced when multiple separate queries are executed to retrieve information that could be gathered into a single, more efficient query.

The absence of proper indexes can also cause the database to search through a vast number of records to reach the desired result.

A software company can analyze queries to identify the most time-consuming operations.

Appropriate indexes can be created for columns that are frequently searched or sorted.

Indexes, when used correctly, help speed up data access.

The amount of data fetched from the database can also be reduced to the minimum required by the screen.

Poor User Interface Design

An application's interface may look visually appealing, but it can also lead to slow performance if it contains too many elements working simultaneously on a single screen.

Each visual element may need to be processed, loaded, or updated, and as the number of elements increases, so do the tasks the device performs.

Furthermore, excessive visual effects can significantly increase CPU and GPU usage.

This problem is more pronounced on older or mid-range devices.

Software companies should review interface design from a performance perspective, not just an aesthetic one.

Unnecessary elements that don't add real value to the user experience can be minimized.

Simple interfaces help the screen load quickly and facilitate navigation.

Large animations and effects can be reduced and used only when they are beneficial to the user.
A large number of menus, cards, and images should also be avoided on a single screen unnecessarily.

Content can be divided into segments that load as needed, instead of displaying everything at once.

Gradual rendering techniques can also help the user begin interacting with the screen before all elements have fully loaded. This method becomes very important in applications that contain long pages or large catalogs.

The App's Size

A large app size can affect download, installation, and update speeds, and sometimes performance during use.

This large size may result from the inclusion of unnecessary images, files, libraries, and resources within the final package.

Some apps may also contain features that most users don't utilize, yet they still add extra size to the application.

The software company can analyze the app's components to identify the files and libraries contributing to its size.

Unused resources can be removed, or some libraries can be replaced with lighter ones when appropriate.

Compressing resources helps reduce the size without affecting core functionality.

Additional files can be provided as needed instead of being included in the app from the outset.

This approach helps make the base version smaller and easier to download.

Images, audio, and video files within the app should also be optimized.

Some files may be stored at a much higher quality than the phone's actual requirements.

The company can use package analysis tools to identify the largest elements.

External libraries can also be reviewed to ensure that each library is included for a clear purpose.

Adding an entire library for a minor function can unnecessarily increase the app's size. Code and resources for features removed in previous versions can also be removed.

This process helps maintain a lightweight application over time.

The impact of application size should also be tested on different devices and limited storage space.

This issue becomes more critical in markets where users rely on phones with limited storage.

The update process can be optimized so that users don't need to download large files each time.

Small updates help reduce internet consumption and improve the user experience.

The goal should not be solely to reduce size, but to maintain a balance between size, functionality, and quality.

The software company can determine which elements can be compressed and which elements should not have their quality reduced.

This review contributes to improving the installation, update, and usage experience.

Therefore, managing application size is an important part of an overall performance optimization strategy.