APK stands for Android Package Kit, a file format used by the Android operating system for distribution and installation of mobile apps. An APK file contains all the elements an app needs to install correctly on an Android device, including code, resources, assets, certificates, and manifest files.
Many users or developers may wonder if it is possible to change the name of an APK file. The answer depends on what exactly you mean by “change the name” — are you referring to the file name itself, the app name displayed on the device, or the internal package name?
Each has different methods and implications.
Understanding the Different Types of Names Associated with APKs
| Name Type | Description | Where It Appears | Can It Be Changed? |
|---|---|---|---|
| APK File Name | The name of the APK file itself (e.g., myapp_v1.apk) | File system, when downloaded or stored | Yes, easily by renaming the file |
| App Name (Label) | The name of the app shown on the Android device home screen or app drawer | Device UI, app launcher | Yes, but requires APK modification and recompilation |
| Package Name | The unique identifier of the app (e.g., com.example.myapp) | System identification, Play Store listing, app permissions | Technically yes, but complex and may cause issues |
Changing the APK File Name
Renaming the APK file itself is the simplest form of changing the “name” of an APK. This can be done just like renaming any other file on your computer or Android device.
Example: If your APK file is named app-release.apk, you can rename it to myapp.apk or any other desired name. This does not affect the app’s functionality or how it appears on the device.
Important: The file name is only relevant for storage and transfer. It does not influence how the app is displayed once installed.
Changing the App Name Displayed on the Device
The “app name” or “application label” is the name users see under the app icon on their device’s home screen or app drawer. This name is defined inside the APK’s AndroidManifest.xml or in the app’s string resources.
To change the app name, you need to:
- Extract the APK contents.
- Modify the app name in the resource files or manifest.
- Recompile and sign the APK.
Step 1: Extracting the APK
Use tools such as apktool to decompile the APK. Apktool breaks down the APK into its resources and code, allowing you to modify the app’s resources.
Command example:
apktool d myapp.apk
This will generate a folder with the decompiled contents.
Step 2: Modifying the App Name
The app name is often stored in res/values/strings.xml as a string resource called app_name. You can edit this file to change the app’s label.
<string name="app_name">New App Name</string>
Alternatively, the app name can be hardcoded in the AndroidManifest.xml file under the application tag using the android:label attribute. Modify this attribute to your desired name if it references a string resource or directly contains a string.
Step 3: Recompiling and Signing
After editing, recompile the APK using apktool:
apktool b myapp
The result will be an unsigned APK in the myapp/dist folder. You must sign it using jarsigner or apksigner before installing it on a device.
Unsigned APKs cannot be installed on regular Android devices due to security restrictions.
Note: Modifying and resigning APKs can break app updates and may violate app licenses or terms of use. Proceed only if you have proper rights.
Changing the Package Name
The package name uniquely identifies an Android app. It is critical for app management, updates, and Play Store publishing.
The package name is usually defined in the AndroidManifest.xml file and the directory structure of the app’s source code.
Changing the package name is more involved than changing the app name for several reasons:
- The package name is used by the Android system to differentiate apps.
- It affects app permissions, data storage, and update paths.
- Changing it may cause the app to be treated as a completely different app.
How to Change the Package Name
To change the package name, you need to:
- Decompile the APK (e.g., using apktool).
- Change the package name in
AndroidManifest.xml. - Rename directories in the source code accordingly.
- Modify any references to the old package name.
- Recompile and sign the APK.
This is a complex and error-prone process. It is usually easier and safer to change the package name during app development in the IDE (e.g., Android Studio) before building the APK.
Summary of What You Can and Cannot Change
| Aspect | Change Method | Difficulty | Impact |
|---|---|---|---|
| APK File Name | Rename file in OS | Very easy | No effect on app behavior |
| App Name (Displayed Label) | Modify string resource or manifest, recompile | Moderate | Changes app name shown to users |
| Package Name | Modify manifest and source code structure | Hard | Changes app identity, may cause compatibility issues |
Why Would You Want to Change the APK or App Name?
There are various reasons to change the APK or app name, including:
- Branding: Customizing the app name to reflect a brand or product.
- Localization: Changing the app name to match different languages or regions.
- Testing: Differentiating multiple versions of an app during development or QA.
- Repackaging: Creating modified versions of an app for distribution with different names.
Caution: Modifying and redistributing APKs without permission may violate copyright or licensing agreements.
Tools Commonly Used for APK Name Modification
| Tool | Description | Use Case |
|---|---|---|
| Apktool | Decompiles and recompiles APKs, allows resource and manifest editing | Changing app name, package name, resources |
| Android Studio | Official IDE for Android development, supports renaming package and app names | Development and building APKs with desired names |
| Apksigner / Jarsigner | Tools for signing APKs after modification | Ensuring APKs can be installed on devices |
| Zipalign | Optimizes APK files for efficient loading on Android devices | Post-compilation optimization |
Legal and Ethical Considerations
Changing an APK’s internal name or package name without authorization may violate the terms of service or licensing agreements of the original app. Redistribution of modified APKs can infringe on copyright laws.
Always ensure you have the proper rights or permissions before modifying or redistributing APK files.
Tip: For personal use or testing, modifying APK names is generally acceptable. For public distribution, seek permission or use open-source apps that permit modification.
Common FAQs About Changing APK Names
| Question | Answer |
|---|---|
| Can I just rename the APK file to change the app name on my phone? | No. Renaming the APK file does not alter the app name displayed on the device. |
| Is it safe to change the package name of an APK? | It can break app functionality, updates, and cause conflicts. Only do it if you understand the risks. |
| Do I need to sign the APK after changing its name? | Yes. Modified APKs must be signed to be installed on Android devices. |
| Can I change the app name without source code? | Yes, by decompiling the APK, modifying resources, and recompiling, but this requires technical skills. |
| What tools help me rename the app inside the APK? | Apktool is widely used for this purpose. |
Conclusion
Changing the name of an APK can mean different things depending on the context. Renaming the APK file is straightforward and has no impact on the app’s identity or display name.
Changing the app name shown on the device requires editing the app’s resources and recompiling the APK, a moderately complex task.
Changing the internal package name is the most difficult and impactful modification, as it changes the app’s identity within the Android ecosystem. This should be done with caution and preferably during development rather than post-build modification.
Always respect intellectual property rights and legal boundaries when modifying APKs. Use appropriate tools such as Apktool and signing utilities to ensure modified APKs function properly on Android devices.
