Lingua.ly is a free service that is designed to help its users learn a new language while browsing the web. The service initially launched as a Chrome app then added an Android app. Now Lingua.ly is available as an iOS app.
The Lingua.ly iOS app creates flashcard activities based on the words that you select from a dictionary or from articles that you read through app. To get started select the language that you're studying (Lingua.ly's iOS app supports English, French, Spanish, Russian, Arabic and Hebrew) then enter words by typing them or pasting them into your account. After entering your words Lingua.ly creates flashcards with pictures. The app will read the words to you. After studying your flashcards you can use the app to search for web articles that utilize the words you're learning.