Best app for quickly brushing up French?

[TenGinBottles]

I did B1/2 level 9 years ago. Exposed via conversation since then, but no writing/reading. I've applied for a job and discovered that they are prioritising French speaking applicants. I need an app I can use on my half hour commute, brush up writing, grammar, listening. What do you suggest?

Not sure about app and interested to see others responses, but if you get a kindle or iBooks app i noticed that there are a lot of well rated grammar/phrase/get back into French books well rated and priced quite cheaply...

Babbel is good and I think it goes up to B2 in French. But it is repetitive and formulaic. Good for a crash refresher course if you can't take a couple of private lessons.

I like conjuguemos for practising verbs. However, I haven't used it for French.

Duolingo is really good. And free.

I have used he Michel Thomas CDs to learn Italian and German. DH used the same system to learn French and Italian. They are just audio courses with no books/reading required. I found them excellent.

I really like Memrise. I've been using it for about 6 months and feel I'm learning properly most days.

Second Memrise.

J’utilise Babbel, Duolingo et Memrise. Bonne chance avec l’emploi!