
Hear the difference between English sounds
Listening training for English sounds your first language merges: L/R, B/V, TH and vowels. One word plays, you tap which of two it was, and 16 voices say each word. Free to start on Android, one purchase opens the rest. No subscription.
TellApart is an Android app designed for listening training of English sounds that may be confused by non-native speakers. It offers a free initial experience, with a one-time purchase unlocking additional content, and features 16 different voices for practice.
Pace needs two or more snapshots. This launch has 1, so velocity and momentum read as unmeasured rather than zero.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.