TellApart

TellApart trains your ear to hear English sounds your first language treats as one: L and R, B and V, TH, and vowels like hat and hut. One word plays, you tap which of two words it was, and 16 voices say each word. Practice is organized into 17 collections of minimal pairs (233 pairs). Free to download on Android, with one purchase to unlock everything. No subscription. iOS is coming soon.