Find out the equivalent in other languages of your favorite idioms.
An online dictionary of idioms where you can search for or browse different ones and see their equivalent in other languages (and details of the subtle differences in meaning.)
For the more technical marketers to easily and flexibility query the database.
Abstract such concepts demographic and psychographic data, history, statistical data, grouping, channels, funnels, conversion, etc., that are useful for marketers. Use these to create a higher level language for quickly and easily build complex queries in the realm of marketing.
You see a book that looks interesting, but you would like to read it in your mother tongue.
An app where you can scan the book’s barcode or take a photo of the cover, and you’ll get a list of all editions in all languages published and available. The app can also show you where you can get the version you are looking for online or offline where you are currently.
Using positive words helps your brain develop, while negative words increase your stress hormone (according to some research.)
An app running on your smartphone that listens to you and analyzes the words you use. When your use of negative words goes above a certain threshold you set, the app will alert you.
Being exposed to people talking in the language you want to learn helps you embed the language.
Have a central listing of online radio stations categorized by language, region, and level of language used (for beginners, more advanced etc.)