[2] The app facilitates communication via text, voice, and video chat, enabling members to improve their language skills while forming cultural connections.

Prior to founding Tandem, Aschentrup, Dickmeis and Kleimann had launched Vive, a members-only mobile video chat platform.

[6] In 2016, Tandem received an additional €2 million in funding, with new investors Rubylight and Faber Ventures joining previous backers.

[2] In 2018, the app introduced Tandem Pro, a subscription-based model offering premium features for enhanced language learning.

[9] In this approach, each participant is a native speaker of the language their partner aims to learn (no teaching experience is required).

By combining authentic 1-on-1 exchanges with collaborative group activities, Tandem offers a diverse and inclusive platform for learners to connect with others worldwide, practice their target languages, and deepen their understanding of different cultures.

[14] Tandem offers several core features free of charge, designed to facilitate language exchange and learning.

[17] This paid feature allowed users to find, book, and conduct lessons with professional teachers directly through the app.

The decision to remove this feature was made to focus on Tandem's core mission of facilitating language exchange and community-driven learning.