Kikitori
Kikitori is an Android app for practicing Japanese by listening and repeating. It comes with 148 short phrases like the ones you hear in anime, in 3 levels and 10 topics, from greetings and school to slang and gaming. Each phrase has romaji (the Japanese in English letters), an English translation, a word-for-word meaning and a note about the kind of scene it's from, and most have a pronunciation tip.
A session is 7 phrases. The phone says each one out loud in its Japanese voice while the text stays hidden, then beeps, and you say it back. The app writes down what it heard, scores you from 0 to 100, and shows which sounds you missed and what it heard instead, then shows the phrase and its notes. Your score decides when the phrase comes back for review.
It's an Android app built on the phone's own Japanese voice and speech recognition, so it can't run in a web page, and it isn't on Google Play. That's why this page has screenshots. They were made on a computer from the app's own screen code with sample data, not captured on a phone. No speech was played or heard: the microphone level and the words heard are sample values, and the app's own scoring code worked out the score of 88 from them.
6 screens
Rendered from the app code with sample data.
Home screen: your day streak, level and XP, how many of the 148 phrases you've practiced (labeled learned), reviews due and new phrases waiting, and the button that starts a 7-phrase session. 
Phrase 4 of 7: the app says the phrase out loud while the text stays hidden as ？？？. The stars show its level. 
Listening: once it says “Hearing you…”, the bars show the microphone level and the words heard so far appear below. 
Feedback for 一緒に帰ろう: a score of 88 with the last う marked as dropped, then the romaji, translation, word-for-word meaning, what was heard, a scene note and a pronunciation tip. 
Session summary: phrases practiced, average score, how many scored 90 or more (labeled perfect), XP earned and the day streak. 
Phrase library, grouped by topic: each phrase with its best score or a new, due or hidden label, and buttons to play it, practice just that one, or hide or restore it.