Retro Pod played right into TikTok’s love affair with the iPod. From demos of defunct Minis to outfits showcasing Shuffles as hair clips, an app turning your iPhone into an iPod was naturally going to be a hit. When Retro Pod started making the round in late December, TikTokers praised the app’s ability to replicate the iPod’s “tactile, bumpy, vibratey feels” that have been lost in the era of music streaming. Videos featuring the app racked up nearl...