Emerging economies like India are witnessing rapid technological changes. To penetrate in the emerging markets and ensure smooth adoption of mobile wallets it is important to study the constructs that trigger mobile adoption. The study presents a cumulative finding of the research carried out in the field of wallet app adoption by using weight analysis. The study systematically identifies various constructs studied by researchers, delineates significant and non-significant relationships between the constructs and mobile adoption, and performs weight analysis to identify the important constructs of wallet app adoption. The study presents a list of strong, frequently utilized significant predictors of app adoption and experimental predictors (i.e., independent variables not frequently used but tested to be significantly impacting app adoption are also presented). To the best of the author's knowledge, no published work presents the cumulative illustration of the constructs to explain the wallet app adoption is available so far.