App to AntiSplit (merge) split APKs (APKS/XAPK/APKM) to regular .APK file on Android

Android App to Merge Split APKs (APKS/XAPK/APKM) to a Regular .APK File
This project is a simple GUI implementation of merge utilities from REAndroid APKEditor.
There are already some apps that can perform this task like Apktool M, AntiSplit G2, and NP Manager, but they are all closed source.
In addition, AntiSplit G2 (com.tilks.arscmerge), the fastest and lightest of the existing apps, has a significant problem; it does not remove the information about splits in the APK from the AndroidManifest.xml. If a non-split APK contains this information, it will cause an "App not installed" error on some devices. Fortunately, the implementation by REAndroid contains a function to remove this automatically, and it carries over to this app.
Version 2.x - Material You design, support Android 4.4+
Version 1.x - Support Android 1.6+
Usage Video -
Ways to Open a Split APK to be Merged:
• Share the file and select AntiSplit M in the share menu.
• Press (open) the file and select AntiSplit M in available options.
• Open the app from the launcher and press the button, then select the split APK file.
If the file picker is not letting you select an XAPK file, try renaming it to a ZIP. If it still doesn't work, try extracting the ZIP and selecting the APKs inside.
There is also a menu in the app that allows selecting an app from those installed on the device as a split APK.
NoteAn APK must be signed in order to install it (unless you have Core Patch). If you are planning to further modify the APK, you only need to sign it after the modifications. Some apps verify the signature of the APK or take other measures to check if the app was modified, which may cause it to crash on startup.