ELSA, an app that helps non-native English speakers improve pronunciation and speaking skills, raises $15M Series B, says its revenue increased by ~300% in 2020 (Yoolim Lee/Bloomberg)

Yoolim Lee / Bloomberg:
ELSA, an app that helps non-native English speakers improve pronunciation and speaking skills, raises $15M Series B, says its revenue increased by ~300% in 2020  —  - Founder draws on her experience for English-language app  — ELSA's backers led by Vietnam Investments Group, SIG