Babbel

Pros

App is very user-friendly, and it can give reminders when it's time to practice
Customized to an individual's learning style; includes visual and auditory elements
Grammar lessons offer extra explanation

Cons

Spelling exercises don't give constructive feedback
May be challenging for those who don't pick up languages quickly

Features

Price - A subscription can be purchased for $13.95 per month (one month), $9.95 per month (three months), or $6.95 per month (12 months). A lifetime subscription costs $249, and it includes access to all languages.

Languages Available - Spanish, French, German, Italian, Russian, Portuguese, Turkish, Dutch, Swedish, Polish, Norwegian, Indonesian, Danish, and English

Content and Methods - Focuses on conversational skills. Users learn vocabulary actively and passively through the context of the practice conversations. Lessons are customized to the user's knowledge and interests.