When comparing Bilingua vs Barden - Language Exchange, the Slant community recommends Bilingua for most people. In the question“What are the best language exchange apps for Android?” Bilingua is ranked 2nd while Barden - Language Exchange is ranked 6th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Looks really nice
Pro Effective
Pro Efficient
You're not just chatting with native speakers, you get to practice with their bot as well. There's also a vocabulary list that lets you store words from your chats--really helps with learning the language more.
Pro Geo-loc and real life meetings
You can find people to speak to in your city.
Pro Cross-platform
The Barden website existed for over 3 years and now they are relaunching with mobile apps so their digital presence is large.
Pro Free
You don't have to pay for it.
Cons
Con Coverage
It's only available in 11 countries for now.That might be because they want to make sure they have enough users for everyone to find matches.