A quiet method for teaching the mouth what the ear already knows.
Every second-language speaker of English carries a trace — a shadow of the native tongue in the flap of a T, the pre-rhotic colouring of a vowel, the unvoiced th that arrives as an s. The standard correction is a person: a coach, a tutor, expensive and inconsistent. The standard alternative is a toy: gamified, evasive, too kind to be useful.
slaytheaccent is the third thing. Record a phrase. The acoustic signal is aligned, phoneme-by-phoneme, against a native reference. You do not receive a compliment. You receive a diagnosis — and a drill.