All iOS application made by the developers must be compatible across all the devices , be it an iPad , iPhone , Mac etc . Although its not a tough battleground for developers as in the case of android devices ,  but still . The more our application will be compatible with the devices , the more chances of getting  wider audience  . App compatibility is challenge for developers to choose among many devices  , therefore it is essential to test application by TaaS product to identify issues , if any .

Its a big big challenge in iOS application development that every app development company has to compact with as iPhone does not comes with garbage collection system . If a developer is thinking of developing an app for only one iOS version , we can’t forget even the multiple devices are running different iOS version , which were having different memory and storage . If you have to reach wider audiences you have to make your app compatible and tested across all devices . At the same time , app must be made in such a way that it does not consume more than required battery life of the iPhone , otherwise even if your app is good and necessary , user will delete it as it is consuming more battery life .

The internet speed you are using might not be the case that user is also using . We may have an internet speed of 1000 Mbps and the user might have only 1 Mbps . Apps that are rich in media , specially streaming apps requires good internet speed won’t run smoothly until and unless the app find good internet connectivity . So it is essential for an app development agency to consider app developmental process in coordination with internet speed which can be tested by Network Link Conditioner . Youtube is the best example of app which shows low resolution videos at slow internet connectivity and HD videos at the time of high connectivity .

Numerous of reason can be behind the disapproval of your mobile application . Your app might be rejected due to simple violation of rule . Apple regularly updates their policies , so an app development agency must be aware about the latest updates and then must be sent for approval to apple accordingly . There are more than 1.5 billion apps in app store , so you are not the only one to face any such disapproval problem . Working along with  the rules and regulation helps you save time and efforts and easy approval of application .

The mobile app , specially the apps which are made for apple should use clean designing process and superior UX . Your app should be regularly updated to some up with frequent changes in design and fashion . However the small mobile screen is always been a challenge for any app developer . A developer should focus on creating simple creative user interface to attract user .