IdiomAce

You are reading an email from your professor and hit the phrase "burn the midnight oil." You understand every word, but the meaning escapes you. That gap between knowing individual English words and knowing English idioms and phrases shows up in meetings, lectures, films, and group chats more often than any textbook or ESL vocabulary list prepares you for.

You open IdiomAce, search the idiom library, and flip the card. The front of each idiom flashcard shows the phrase and a category chip (Work and Business in this case). Tap, and the back reveals the full definition, a register note marking it informal, and two example sentences in real context. Flag it as tricky, and the spaced repetition engine keeps cycling it back until it sticks.

The next morning, you run the Daily Drill: a five-question idiom quiz drawn from your current study set. It cycles through multiple-choice definition matches, fill-in-the-blank sentences, and context-match scenarios. A streak ring tracks consecutive study days. The summary card shows exactly where each question format tripped you up, so the next session targets the real gaps.

Over weeks, the Progress Tracker maps your study habits and breaks accuracy down by category: Animals, Body Parts, Food, Weather, Emotions, Time, Business. You see which clusters of English vocabulary you have locked in and which ones still need work, making it easy to use as a vocabulary builder for everyday speech and writing.

No subscription, no ads. The whole app is free.

Non-native English speakers, college students, and anyone studying English phrases for work find the same 300 idioms in the library, organized in seven categories that span the range from casual conversation to professional settings.