Learn German on Lingvist

Lingvist is a good app for anyone who is busy but wants to quickly learn a new language. The app focuses on around 5000 words in each language to help you learn at an accelerated pace, the theory behind it is that these words are all that you need. Since its inception in 2014, it has been downloaded by over 6 million people.
Price: $9.99/month
Devices: Android, iPad, iPhone, and Web

Learn German on Speakly

Speakly is a language learning app that uses your phone's microphone to translate words you hear in real life. It also lets you store translations, search through them by voice searches, learn new words and review past ones. For each word it gives an example sentence that includes the word learned, which makes for good practice in both reading comprehension and speaking.
Price: $10.99/month
Devices: Android, iPad, iPhone, and Web

Learn German on Triplingo

Looking to learn the basics of a language and not the whole thing? As its name suggests, Triplingo is designed to help you learn the essentials of the language that is spoken in the place you're visiting. Triplingo is a good companion for any traveler, whether you're planning a quick weekend getaway or spending months living in a foreign country. You'll be able to learn useful phrases and expressions for every occasion, from ordering food to asking for directions. The methods of teaching include interactive flashcards and pronunciation guide. The app also comes with a built-in voice translator, which can actually come in pretty handy in emergency situation - whether you're interested in learning the language or not.
Price: Free
Devices: iPad, and iPhone

Learn German on Fluenz

Fluenz is a language learning app that uses a video-based approach to teach users. Fluenz helps users build fluency (not pun intended) through various exercises which encourage retention of new vocabulary and grammar points.
Price: $408/month
Devices: Android, and iPhone

Learn German on Awabe

Awabe is a flashcard language learning app on Android. It focuses on vocabulary, offering as much as 4,000 words for each language.
Price: Free
Devices: Android, iPad, and iPhone

Learn German on Clozemaster

Summary: Clozemaster is a Web & iOS app that helps language learners practice and learn new words using fill-in-the-blank sentences. It's another gamified app like Duolingo.
Price: Free
Devices: Android, iPad, iPhone, and Web

Learn German on LingQ

LingQ is a language learning app that uses the same logic for learning a new language as learning your native tongue: using content you already like. They have books, news, podcasts, sports coverage, politics, culture, and food to name a few.
Price: Free
Devices: Android, iPad, iPhone, and Web

Learn German on Mosalingua

Mosalingua is a language learning system that prides itself in having 11 million learners. It works by using flashcards to teach you new words and phrases. The app also includes a pronunciation guide, grammar tips, and a dictionary.
Price: Free
Devices:

Learn German on Live Lingua

Live Lingua used to specialize in so-called "public domain" courses - it used to be a database of language learning material that is not copyrighted. Now, the platform offers 1-on-1 language courses in select languages, they offer to put you up with a handpicked, native tutor. Currently, they have an offer for a free first class in Spanish.
Price: depends
Devices: Web

Learn German on Tandem

Tandem is a free platform with a simple premise: there is probably someone out there who is learning your native language, and whose native language you want to learn. So they put you in touch with them. When you sign up, Tandem will review your application to make sure their platform remains safe and that the person you get matched with is also a keen language learner.
Price: depends
Devices: Android, iPad, iPhone, and Web