Media tag editor addon for MiXplorer file manager. It won't be visible in your launcher. It can be uninstalled from Android or MiXplorer settings. MiXplorer v6.57.6+ must be installed.
The Silver version doesn't need this add-on. You can download it from here: https://play.google.com/store/apps/details?id=com.mixplorer.silver
「MiX Tagger - Tag Editor Add-on」のレビュー
レビュー
★★★★★ It's very useful but I found a bug. When I was editing a m4a file encoded by alac on ffmpeg, error message was displayed as toasts. It didn't occur when I was editing a m4a file made by xrecode3 (refalac). Please fix it.