Vgmtrans Android -
Best for a website introduction or F-Droid/Play Store listing.
If you need VGMTrans's core features (sequence extraction, format reverse-engineering), use a desktop PC. For just listening to game music on Android, use Droidsound-E (available on GitHub/F-Droid) — it supports many of the same input formats VGMTrans reads.
For developers: There's no open-source Android port of VGMTrans due to its heavy Qt/C++ dependencies and file I/O requirements, but you could theoretically compile a CLI version for Android using Termux + custom build scripts (advanced). vgmtrans android
If you need VGMTrans's extraction/conversion features:
This is an Android port of VGMTrans, a software that converts proprietary video game music formats into standard MIDI and DLS/SF2 files. Best for a website introduction or F-Droid/Play Store
Since VGMTrans has a command-line interface (CLI) option in its source code, some developers have compiled it for ARM Linux, which can then run inside Termux (a powerful terminal emulator for Android).
Steps (Conceptual):
Note: This is an advanced, developer-only process. It is not recommended for casual users.