[1] Each Fluenz program is available to users for installation on computers via DVDs as well as full access to an online platform in addition to supplementary tools such as practice CDs, downloadable podcasts, and digital Flashcards optimized for iPads and other tablets.

[14] This approach is in contrast to the best-known commercial theory of language learning, "immersion", championed by companies such as Berlitz and Rosetta Stone.

According to the reviewer, the Fluenz Mandarin 1+2 software is visually attractive and makes good use of technological features, as well as being pedagogically sound.

The review concludes that "The Fluenz program includes what some researchers believe to be the three elements important for balanced goal development in L2 tasks: fluency, accuracy and complexity".

[15] In 2008, Fluenz launched the campaign 'Language is a human right', linked to their non-profit organization Fluenz.org, developing and releasing what they called El Book.

[16] El Book is a free primer mainly aimed to Spanish-speaking immigrants with absolutely no prior knowledge of the language on the bare rudiments of English, and without the economic means to take a proper course.

[17] Their press release states:[18] El Book is a free downloadable program containing a booklet and a companion MP3 file designed to help disadvantaged immigrants and refugees of Hispanic origin learn very basic English.

[citation needed] Fluenz iPhone contains a "Learn Offline" feature which allows users to download up to 3 levels at once onto their device to allow use during long airplane flights and other scenarios where internet connectivity is not possible.