Music Tag Fixer is a free Android app developed by Sais Workshop under the Multimedia category and Music & Radio subcategory. It is designed to convert and fix non-unicode music ID3 tags to unicode with ease. With this app, users can select the encoding and songs they want to fix, preview them automatically, and convert all in one tap.

Music Tag Fixer offers two modes: safe and speed. In safe mode, all files modified will have backup automatically, allowing users to recover them if something goes wrong. On the other hand, speed mode rewrites music files without backup and checking, which is recommended for adept users.

Overall, Music Tag Fixer is a useful app for music lovers who want to organize their music library and ensure that all their music ID3 tags are in unicode format.