Hi Jason,
I think that this is a great idea! This is a venture that I would invest in. It can reach a great amount of people, and also enters into a realm that does not have much competition yet. I think this could even be taken one step further for english language learners. Many english sayings do not translate nicely, and do not make sense in other languages (e.g. top of the morning). I think that this app could be beneficial to many people and areas. Looking forward to seeing this!