504 - Vocabulary Builder

38 of 100 · reviews
4.8of 5 · store
4,602ratings on the App Store
39reviews read

An editorial reading of the saved reviews

A mobile version of the '504 Essential Words' textbook in flashcard format. Cards include words, example sentences, and TTS pronunciation. The problem is that TTS is unreliable a critical flaw for a language learning app. An update also locked the second half of the book behind a subscription without notifying existing users.

Screenshots

What people use it for

People working through the 504 Essential Words textbook who want the same material in a digital format.

What reviews praise

Cards follow the structure of the well-known textbook exactly, which is convenient for anyone already working through the book.

What reviews complain about

TTS pronunciation is unstable or plays too fast for beginners, undermining the card's core function.

What users experience

1 excerpt from the breakdown. These are individual cases, not a verdict on all users.

I set up the app to ostensibly teach me intermediate-level French vocabulary. The French words appeared in individual cards with French synonyms and example sentences. All fine so far. But when I pressed the audio pronunciation button next to the French vocab words, the built-in text-to-speech reade