The present small-scale study investigates language learning in primary schools in Luxembourg and the ways in which this process is mediated by peers and the iPad app iTEO. This study draws its data from the larger longitudinal qualitative research project iTEO (2013-2017) and is based on 13 hours of audio and video-recordings. The participants are 6-7-year-olds learning German and French. Grounded in sociocultural theory, this paper examines, first, the ways in which the emergent multilingual primary school children scaffold each other's learning of German and French while collaboratively producing oral texts on iTEO and, second, investigates the affordances of this app for learning. The findings show that the children's language learning was mediated by peers, the task and the app. The children used a range of learning and teaching strategies while completing tasks framed by their teacher. iTEO and the task together mobilised the children's resources, encouraged autonomy and promoted discussion about language.