Ultimate Tips And Tricks To Enhance Your iOS App Performance

Mobile app performance plays a crucial role in deciding your business’s growth. Your users expect you to offer an app that is not unresponsive or slow. Thus when it comes to developing an iOS app, you must make sure that your app offers unmatched performance to your users. From giving them a fast launch experience to allowing them to download resources without their app being unresponsive, you should make sure to offer an app that performs fast at every step. But, how should you go forward with it? What should you do to enhance your iOS App performance?
In this article, we are going to answer this question by telling you some incredible tips and tricks to improve your iOS app performance and give your users an ultimate app experience.

How to Improve Mobile App Performance

With the ever-increasing popularity and revenue generation of mobile apps, a large number of organizations are now adopting to launch their app in the market. However, not every app becomes a successful one among the users. The major reason behind this is its performance which most of the times is not as per their expectations.

Thus, improving your mobile app performance should be taken into consideration if you want to grow in the market.
Here are some important tips that will help you in offering the best possible app performance to your app users.


Caching is a basic and important tip to improve your iOS app performance. Caching is a technique of storing data in a cache or a temporary storage area. When any app fetches a remote resource for the first time, caching stores a copy of that resource in a storage area or disk for later use. Whenever the same resource is required later by the user, the app can load it from the storage instead of fetching it again from the original server. This process not only saves a user's time but also the burden of additional traffic thus improving the performance of your application.
When it comes to performing caching in an iOS application, you can cache remote server responses, images, or even calculated values, such as UITableView row heights.

Don’t Block the Main Thread

Another essential aspect of developing an app for the iOS platform is to never block the main thread. Your application will become unresponsive if you block the main thread with a long-running operation, for example downloading an image. Thus, it is important to move long-running tasks to a background thread. Even if you require lesser data, the operation can still block the main thread, if the device's connection is slow.

To easily write safe multithread code, you can make use of Grand Central Dispatch, or NSOperations, and NSOperationQueues.
Here is the template for Grand Central Dispatch,

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// switch to a background thread and perform your expensive operation

dispatch_async(dispatch_get_main_queue(), ^{
// switch back to the main thread to update your UI


GZIP Compression

Many mobile apps depend on external resources from a remote server. Moreover, you might be developing an app that downloads resources in a format like XML, JSON, HTMS, or some other format.

Thus, a user can face slow downloading issues due to low internet connectivity which can keep them waiting and create a negative impact on your app. To overcome this, you can reduce the file size of the resource and speed up the downloading by enabling GZIP compression on both your server and your client's server as well. GZIP compression can be especially useful in the case of text-based data which has more potential ratio for compression. iOS already supports GZIP compression by default which can help you make your app work faster and better for your clients.

Lazy Loading

Lazy loading refers to postponing loading or initialization of resources until they are needed by the user. Lazy Loading is a lot beneficial to improve the performance of an iOS app. Moreover, it can improve the memory usage of an app.
You can use lazy loading in case of image download which will reduce the chances of app freezing up.

Create an offline mode
You can also create an offline mode for your app to save your app's performance. It is also beneficial in case of an unexpected loss of network connection as it will create a buffer for your resources that will be saved offline. Thus, the offline mode can result in improved app performance, security, reduced loading speed, and reliability for users.

Handle Memory Warnings
Whenever the system memory is running low, iOS notifies all the running apps. According to Apple, if your app received a memory warning, it must free up as much memory as possible. To do so, you can remove strong references to image objects, caches, and other data. You should free up as much memory as possible as soon as possible. To do so, you can remove image references, media files, or any large data file that can be reloaded later on.

Final Thoughts

Your users will expect your app to perform well and if it doesn't they will simply move on to another one. Therefore, you should make sure to hire iOS developers in India who can help you develop apps that perform at their best. You should plan and implement performance optimization by a proper approach:
1. Be aware of the problems your users are facing while using the iOS app
2. Measure the behavior of your app to find the real cause.
3. Plan a change and implement it.
4. Follow up to see whether that change has improved the app's performance or not.
By using this approach, you can continuously improve your app's performance and offer your users a responsive and fast iOS application.
Adil 30 march 2021, 10:00
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