A Guide to Appsealing and ProGuard Integration

In the digital era, mobile apps are used for everything be it banking, shopping, entertainment, etc., and by everyone. Yet, as mobile apps become ubiquitous, the threat to cyber security becomes just as high. This is where multi-layer app security like Appsealing and Proguard come into action.

Appsealing (or app shielding) is a security technique that prevents mobile apps from being reverse-engineered, tampered with, or in other ways attacked maliciously. It does what its name says, which is to add a shield to your app by concealing and encrypting the code making it unclear and unmodifiable by hackers. Whereas Proguard is a code optimization and obfuscation tool usually used for Android apps. It will help cut down the application’s size by removing unnecessary code and resources and also hide the code so that it is difficult to reverse-engineer.

While both Appsealing and Proguard present the same goal of code obfuscation and protection, they differ in their strategy and the level of security they give. In this article, we’ll go deep into the details of Appsealing and Proguard, examine their integration points, and grasp how they can be used together to upscale the security of your mobile applications.

Understanding Appsealing

 Appsealing is a comprehensive application security solution that covers code obfuscation in addition to many other things. It employs a multi-layered approach to protect your app from various threats, including

  • Reverse Engineering Protection: Appsealing does code obfuscation and encryption making it nearly impossible for attackers to insightfully explore and alter the code. It also includes encryption methods (string encryption), control flow obfuscation, and anti-debugging to provide an additional layer of security.
  • Anti-Tampering: Appsealing makes sure there are no unapproved alterations to your application’s source code, resources, and data. It also detects and responds to common types of tampering including hooking, memory patching, and code injection.
  • Runtime Application Self-Protection (RASP): RASP is one of the features of Appsealing. It is designed for the run time monitoring of the server-side mobile app and blocking any malicious traffic, e.g. code injection, memory corruption, and tampering.
  • Secure Key Storage: Appsealing provides secure key storage and management solutions, thus striving to ensure that data like encryption keys and API keys are protected from unauthorized access. 

 Appsealing solutions often come with different protection levels, so you can select the most appropriate one for your app needs and budget. There is usually a higher degree of security at higher protection levels. This means it is mostly easy to implement more robust features and stronger privacy measures.

Understanding Proguard

 Proguard is a free, open-source tool majorly used by developers in the optimization and obfuscation of Android applications. Its primary functions include:

  • Code Shrinking: Proguard eliminates the unnecessary code and resources contained in your app, which leads to smaller sizes and better performance.
  • Code Obfuscation: Proguard renames classes, methods as well as fields to meaningless names, so code can’t be understood by attackers, and reverse engineering your app is impossible for them.
  • Optimization: Proguard can do extra optimization like inlining methods and cutting out useless instructions which consequently makes your application faster and better.

While Proguard does obfuscate and optimize the code, it should be noted that it is not a full application security system that Appsealing is. Proguard majorly concentrates on code obfuscation and size reduction, whereas, it does not offer protection against runtime attacks and tampering, or other advanced security threats. 

 Integrating Appsealing and Proguard

 Appsealing and Proguard have different lines of coding action, but they can be used together to deliver more advanced solutions. Here’s how you can combine the two:

 Use Proguard for Initial Obfuscation: Get started by applying Proguard to obfuscate your app’s code and eliminate unneeded resources. This is an important step, which allows for a reduction in app size and minimizes the readability of the code. 

 Apply Appsealing: Once Proguard has been implemented to obfuscate your application, the next step should be to perform Appsealing to increase the security level. Appsealing will make the code unreadable and inaccessible via various obfuscation and encryption techniques to prevent reverse engineering, tampering, and runtime attacks. 

 By incorporating Proguard and Appsealing you will be using the optimization and obfuscation features of Proguard as well as getting the advanced application security features from Appsealing. The hybrid method, which combines both optimization and cyber security considerations, the result is indeed the development of a high-performing app with a high level of protection against various cyber threats.

Integration of Best Practices in Appsealing and Proguard.

 To effectively integrate Appsealing and Proguard, follow these best practices:

  1. Start Early: Apply Proguard and Appsealing from the early stages of developing your app to ensure its durability and security. It’s much easier to create a network system with embedded security than introducing security measures after the network has been built. 
  2. Follow Guidelines: Carefully look through the documentation and guidelines given by the Appsealing and Proguard vendors. Effective integration is necessary for these devices to be able to produce the desired outcome.
  3. Test Thoroughly: Conduct an extensive testing cycle to make sure after integrating Appsealing and Proguard, the app is working as expected and that the security procedures are functioning properly.
  4. Keep Up to Date: Make it a habit to upgrade Appsealing and Proguard to the current releases to benefit from new features, bug fixes, and security enhancements. 
  5. Implement a Secure Development Lifecycle: Adopt the secure development lifecycle (SDL) approach, which includes security practices right from the start till the end-point of the app development cycle including design, development, and maintenance.


The mobile app development industry is rapidly changing, where application security is no longer a choice but a must. The combination of Appsealing and Proguard integration enhances code obfuscation, optimization, and application security only to name a few features that protect your app from a range of cyber-attack methods. 

 As long as you are aware of the strengths and shortcomings of each tool and stick to the advised methods of integration, you will get the chance to develop mobile apps that are secure at the same time fast. 

 Do not forget that the Appsealing and proguard methods are among the most important security measures you should consider to protect the app, its data, and the users’ trust in your brand. Continuously monitor, and enhance the existing security ecosystem, and give priority to the security of your app users for a safe and enjoyable user experience.

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