In this paper, we present the L’ART Research Assistant, a freely available open-source app to aid researchers in the collection, storage and transfer of data for research in bilingualism and language attitudes, with a particular focus on bilingual populations who speak a majority language and a regional / minority / minoritized language. The current version of the app [version 0.4.1] implements the following four tools: 1. A digital informed consent tool (see section 5 for details). 2. A digital adaptation of the Language and Social Background Questionnaire, or LSBQ (Anderson, Mak, Keyvani Chahi & Bialystok, 2018), which we term the LSBQe (“e” for electronic). 3. A digital implementation of the Attitudes towards Languages Questionnaire or AToL (Schoel, Roessel et al., 2012), which we call AToL-C (“C” for continuous, as our implementation uses continuous rather than ordinal scales). 4. A digital tool for measuring language attitudes via the speaker evaluation paradigm. This tool enables users to run several evaluations of audio guises such as the Matched Guise Technique (Lambert, Hodgson, Gardner and Fillenbaum, 1960) and the Verbal Guise Test (e.g., Markel et al, 1967). Due to its flexibility as either MGT or VGT, we named this tool ‘Audio Guise Task’, or AGT for short. 5. A simple memory game to be employed as a distractor in a series of tasks