Google translate offers in its mobile versions conversation exercises for learning English (https://support.google.com/translate/answer/16475590).

Two modes available: oral comprehension and expression.

Activities are offered every day with objectives displayed and follow-up day after day as in the dedicated applications.

A “create your training scenario” mode is proposed: from an instruction, a situation is created with related activities.

15 display languages and English only for training language.

Free and unlimited beta.