(Android) https://play.google.com/store/apps/details?id=com.meskteknol... (iOS) https://apps.apple.com/us/app/me%C5%9Fk-tune/id1575937381

It is completely free with all features unlocked. (IAP is only for donation purposes).

If you want to have a look at UI, checkout these short clips.

https://www.youtube.com/watch?v=6td88DiQcGU https://www.youtube.com/watch?v=4WU4o7bvaYU https://www.youtube.com/watch?v=dC3eTUIDLEI