My friend records himself saying words in his language and the translation, then plays it in the car during commute. Is there an app that does this automatically?

My friend is learning a foreign language. His commute is like 40 minutes each way.

He literally sits down, records himself saying a word in his language, pauses for a few seconds, then says the translation. Saves it as an mp3 and plays it every morning while driving.

It's a lot of manual work but the method itself makes a lot of sense. You hear the word, you have a moment to try to recall the translation, then you hear it. Hands free, no screen, just listening.

So I started looking for an app that does exactly this. You add your word list, press play, and it reads the word in your language, pauses, then plays the translation. Background playback so it works while driving or walking.

I couldn't find anything that does this well:

- Anki is great but you need to look at the screen and tap

- Pimsleur is audio but you can't add your own words

- Duolingo doesn't even come close

Does this app already exist and I'm just missing it?

If it doesn't - would you actually use something like this? I'm thinking about building it and just want to know if it's a real problem for other people too