Mobile app development is all the rage today. Everybody uses their phones so much that it’s become a health concern, and people have to learn to “detox” from being chronically glued to their phones. In such a world, every brand needs an app to maximize its reach and marketing. Whether the app is genuinely useful or just a front for a marketing funnel, it needs to be competitive and meet high standards for people to engage with.

However, due to the varieties of devices available as well as different OS and their versions, hidden complexities in mobile app development are expected. Today, we are going to check out various challenges faced by mobile app developers. 

Device & OS Fragmentation

We already touched upon the fact that different screen sizes, hardware specs, and OS versions can result in problems. We didn’t mention the nature of those problems. So, let’s do it now. All the variations in devices mean your app might run perfectly on one device and crash or misbehave on another. So, extensive testing is required to make a good app, and they must use technologies that are commonly used rather than bleeding-edge.

So the challenge here is the massive manual labor required to test the app via emulators and real devices to ensure that it doesn’t crash or break on any system. It is not practically possible to test for all devices, so the app or app provider should also have a feedback/errors reporting method so that customers can provide information if they encounter instability. 

You can allay the burden on the devs by hiring a 3rd party QA tester/auditor. They have a lot of test beds, and they can do more testing than any dev could do internally. 

Performance Optimization & Resource Constraints

Just like with a website, mobile apps cannot make any excuses in the performance department. They need to load fast, shouldn’t crash, and shouldn’t hog so many resources that users can’t do other stuff on their phone simultaneously.

An additional challenge here is that many apps need to connect to a server to get information and show it to the customer. So, if the customer’s network is slow, the app appears to be slow as well. So, you need some way of minimizing that effect.

Here are some tips for managing all of that. 

Tips:

  • Use profiling tools to find bottlenecks in performance.
  • Cache aggressively so that the app loads data fast even when the network is slow. Try to batch network calls and use the secondary threads to do heavy work instead of the main thread.
  • Monitor real-world performance (analytics, crash reports) post-deployment to find issues and patch them ASAP.

This way, you can stay on top of your app’s performance optimization.

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App Store Policies, Review, and Compliance

Deploying to app stores introduces a layer of gatekeeping. Rejections or delays because of minor violations are common. Developers also need to stay ahead of evolving rules on user data, privacy, and monetization. If your app is to be marketed globally, it needs to check a lot of boxes. There are so many compliance and privacy requirements that a dev team can fry their brains with information overload.

Well, the most important one to keep in mind is the GDPR (if you are going to deploy your app in the EU). It provides guidelines on privacy, UI behavior, permissions, and metadata that can be collected, as well as monetization methods. 

If you fail to comply with them, your app will not be allowed to be deployed. Such delays can throw a wrench in your plans, so do your due diligence before you start development.

Security & Data Privacy

Because mobile apps often access sensitive user data or backend systems, security is non-negotiable. Risks include insecure APIs, reverse engineering, or DNS misconfigurations that could expose the app to hijacking.

This is where DNS checks become valuable: before deployment, developers should confirm that their app’s backend endpoints resolve correctly and no stray DNS records exist that could be exploited. You could also be using APIs, and those have their own DNS endpoints that need to be checked and verified.

A DNS lookup tool can help you audit and verify your DNS records to find misconfigurations, empty records, outdated records, etc. So, make sure to keep on top of that when deploying your app.

Here are some other tips you can use to improve the security posture of your app.

  • Use TLS/SSL for all server communication
  • Encrypt sensitive data on the device
  • Validate API endpoints with DNS health checks before rollout
  • Audit permissions and logging for compliance

These security measures are also part of the compliance and policies that app stores, countries, and other governing bodies demand. So, be sure to take care of them.

Maintaining & Updating the App Post-launch

Deployment is not “set and forget.” As we said before, you can’t practically test every device that your app is going to run on. So, post-deployment is actually a huge part of the development process. Once an app has been deployed, things will happen. Bugs appear, OS updates roll out, new devices arrive, and user expectations shift. 

Rolling out updates without breaking existing functionality or alienating users is a balancing act. The updates may be minor, i.e., some bug fixes and edge case handling. Or, they could be full-on UI overhauls and new features and functions.

The challenge here is to do those things without breaking your app or making it harder to run on older hardware. And nothing can be really done about it, you just have to follow programming best practices and deal with any problems that arise.

Conclusion

So, there you have it, the most common challenges in mobile app deployment and development. Mobile app deployment is full of hurdles like device fragmentation and performance optimization, app store compliance, security risks, and ongoing updates. 

By planning for these challenges in advance and using the right tools, developers can reduce risks and ensure smoother rollouts.