This doesnt attempt to teach any grammar or sentences. However, this is not a bad way to learn a vocabulary of French words. You have to upgrade to the paid version to get around 2000 words. The best aspect of the program is that every word comes with a good pronunciation by a French speaker. Also, the spaced repetition really does work in which words are shown to you repeatedly and you have to check off when you are able to recall them correctly. If you use this app, you will learn 2000 of the most common words of French vocabulary, although you will have to rely on other tools to understand or speak whole sentences.
QualityPlease about French Essentials, v2.1.0