Convert APK to SIS

Source format: APK

APK stands for Android Package. It is the standard installation file format used by Android devices and Android-based emulators. An APK contains compiled app code, resources, the manifest, and other assets needed to install and run an Android application.

APK files are commonly used by Android developers, app distributors, and users who install apps outside the Google Play Store. Typical uses include app testing, sideloading, and direct distribution.

Target format: SIS

SIS is the installation package format used by Symbian OS devices. It was commonly used on Nokia and other Symbian smartphones to install applications, libraries, and system components. A related variant is SISX, which is a signed Symbian package format.

SIS files were designed for the Symbian ecosystem and only work on compatible Symbian devices or emulators. The format is now largely obsolete because Symbian is no longer widely used.

Can APK be converted to SIS?

Not directly. There is no reliable one-click conversion from APK to SIS. Android and Symbian are different operating systems with different runtimes, APIs, permissions, and binary formats. In most cases, you must port or rewrite the app rather than convert the package.

Important: Repackaging an APK into a SIS file would not make the Android app run on Symbian. The app code itself must be compatible with Symbian.

Best way to get a Symbian version

1. Check whether the developer already released a Symbian build.
2. If source code is available, port or rewrite the app for Symbian.
3. Package the Symbian version as SIS or SISX using Symbian packaging tools.

Desktop tools for Symbian packaging

• Symbian SDK or Carbide.c++ for legacy Symbian development and packaging.
• MakeSIS to create SIS packages from a .pkg definition file.
• SignSIS to sign the package when required.

Typical packaging workflow:

1. Create a Symbian .pkg file that defines the files and install locations.
2. Run makesis app.pkg to generate app.sis.
3. If needed, sign it with signsis app.sis app_signed.sis certificate.key certificate.crt.

Online converters

There are no reputable online converters that can truly convert an Android APK into a working Symbian SIS package. Sites claiming one-click APK-to-SIS conversion are generally unreliable because they cannot translate Android code and dependencies into Symbian-compatible software.

Compatibility and limitations

APK to SIS is not a format-only conversion. The two formats package software for completely different operating systems, so a direct conversion usually produces a nonfunctional result. Even if a file were repackaged, the app would still need Symbian-compatible code and libraries.

Practical recommendation: If you need the app on a Symbian device, look for an existing Symbian version, a Java ME version, or source code that can be ported. If your goal is to run an Android app, use an Android device or an Android emulator instead.