The best alternatives to Retro are Poolsuite, Rewound, and iPod Classic Player. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Retro?
Postman Recorder by DevTools— Export Postman APIs from browser
Rewound is a Music player for your Apple Music library. Easily browse and play your music with customizable on screen buttons and gestures - this is useful for one handed use.