People accessing apps today are incredibly busy and their interactions with applications are commonly brief. That is why the speed of an app is the essence of its success or failure in the target market. Absentminded or sluggish applications will only result to poor user ratings and would not sit well with the users thus losing their concentration and time together with the possible loss in sales. Therefore, Making certain that an app runs efficiently is very important in view of the fact that this helps an application entrench itself in a competitive market and also help to retain its clients.


1. Optimize Your Code


Minimize and Compress Code

Clarity and coherence of the code executed are the foundation of a high performing mobile application. Optimize and compact your code to make as small as possible and as simplified as possible. This aids in efficient implementation of the software and improved and quick loading of web pages.

  • Use Code Minifiers: Most of the languages have optimization tools that can trim out all unnecessary characters from your code including UglifyJS for Js and ProGuard for Android.
  • Remove Unused Libraries: This should entail nulling out all library and dependency which are not currently in use in your code.

Efficient Algorithms and Data Structures

Select the proper algorithms & the appropriate data structures for data processing in order to achieve impressive results. 

  • Use Efficient Data Structures:  For instance, when text-importing from a file and be using HashMap in the fast search for a value on a key.

2. Reduce App Load Time


Optimize Assets

Some assets are huge which includes images, videos and other forms of media and these slow down the running of your applications. One should optimize such assets in order to maximize the page load times.

  • Image Compression: TinyPNG and JPEG Optimizer are some of the recommended websites for reducing the size of images but the quality is not compromised.
  • Use Scalable Vector Graphics (SVG): Icon and simple graphical elements should be better stored as SVGs instead of having raster versions taking their place.

Lazy Loading

Additionally, Use the technique of putting all the infrequent requests and background images at the end of a page and use the attribute of ‘defer’ to load these elements later. This also helps offload some initial loads, which makes the app perform significantly better in the perception of the users.

  • Images and Videos: Pre-call images / videos – load them just before they are likely to appear in the viewport.
  • Modules and Components: Start all the app’s modules and components when they are required and not when the user opens the application for the first time.

3. Optimize Network Requests


Reduce and Optimize API Calls

Reduce the frequency of the network connections your app uses and improve these connections’ efficiency.

  • Batch Requests: Thus, use the conditional option of several API calls to minimize network utilization.
  • Cache Responses: Incorporate measures to cache, some data are frequently used and caching them locally reduces the likelihood of multiple network calls.

Use Efficient Data Formats

It means you select high-quality formats of the data as much as possible to reduce size of transferred data.

  • JSON Over XML: In the data interchange, use JSON instead of XML as JSON is less heavier and takes less time to parse.
  • Compression: Employ the use of implemented methods such as .gzip or others that seek to minimize the amount of data passing through network.

4. Improve Database Performance


Optimize Database Queries

High-efficient queries may bring great quality to your built app because the databases’ performance is truly critical. Make your queries better by sliding down their loading and make the concerned sites or web pages more responsive.

  • Indexing: Indexes should be used as it enhances the query processing speed by enabling the location of the data.
  • Limit Data Fetching: Limit the data retrieved by using the correct query filters and getting only a limited number of records.

5. Implement Efficient Memory Management


Avoid Memory Leaks

All in all, memory leaks are a dangerous foe as it will continuously consume memory space for your application the longer it is in use.

  • Use Profiling Tools: Special application, such as Android Studio Profiler and Xcode Instruments, can show that apps waste too much memory or that there are memory leaks.
  • Release Unused Resources: Make sure that opened resources like bitmaps, and file handles are closed if no longer needed.

Optimize Memory Usage

Memory management enables an application to cope with available amount of memory and don’t overburden devices.

  • Use Efficient Data Structures: Hence, Select the data structures that use minimum amount of memory space possible.
  • Limit Background Processes: Minimally, do not have uncontrolled activities going on in the background that take up memory.

6. Enhance User Interface (UI) Performance


Optimize UI Rendering

  • Reduce Overdraw: Design your UI elements in such a manner that that same pixel is not drawn several times in the same frame of the game.
  • Use Hardware Acceleration: Turn on the hardware acceleration so the elements of the site will be rendered by the GPU and not the CPU.

Preload and Cache UI Elements

In this case one must preload and cache the UI on the web page to avoid delays while loading different parts of the web page, this would help in reducing the amount of time spent on loading of the various segments of the web page.

  • UI Component Caching: Wherever it would be possible, save the used complex UI components in the cache, so that loading and rendering of components will take less time.

7. Conduct Regular Performance Testing


Automated Testing

Resume the habitual use of automatic testing to check the application’s efficiency and improve it if needed.

  • Continuous Integration (CI): It requires the inclusion of performance tests in the CI pipeline so that observation of performance problems occur early.

Real User Monitoring (RUM)

Employ RUM tools to collect information about the actual users and Their experience as well as the application’s performance issues.

  • Analytics Tools: There are several tools that help monitor users and app such as Google Analytics Firebase and new relic.
  • Crash Reporting: Always perform a crash reporting to get a clue on the causes of any crashes related to performance.

8. Regularly Update and Maintain Your App


Stay Updated with Technology

To avoid having slow and outdated applications, maintain your app current with the modern technologies and protocols.

  • Framework Updates: Always upgrade the framework of the app (e. g., React Native, Flutter) to increase the performance and new features of the app.
  • Library Updates: To fix issues, conduct updates on third-party libraries and frameworks to the newest versions available.

Regular Maintenance

Perform regular maintenance to keep your app running smoothly. 

  • Code Refactoring: Make use of polymorphism to make sure different data members and control functions have a similar interface.
  • Remove Deprecated Features: Refactor away or disable or comments out any elements, which are no longer relevant and can have an adverse impact on speed.


Optimization of your application’s performance and its rate of loading is one of the most important factors if you want to offer an excellent experience with your app to the customers and if you want to stay ahead of your competitors. Hence, Basing on the best practices in coding optimization techniques, usage of caches, clean code and compressed images, control of the memory usage, faster UI and adequate testing and updates to technology, your app should run as a well-oiled machinist.


At Device Doctor India we deal with application development, website development, and also marketing. Reach out to the specialists within our team and we will guide you on how to make your app fast and performant to satisfy your audience. Some of the services include; Contact us today and let the experts at PHD advance your position in the digital ecosystem.