We've created a free and 100% Open Source Alternative to Tandem app called LangX, which functions similarly to Tandem but still in beta phase, we update daily with a focus on language exchange and practice. Our community is growing so fast, i launched this app a month ago, and now we are more than 10 contributors actively, from design to digital marketing, from SEO, ASO to accessibility and we love testers as well!! Everyone does what they can do best! I'm really soo happy to see results ! Avail