We study whether easier monitoring of personal finances affects consumer spending. We use transaction data from an account aggregation company to study consumers who installed the mobile app after using the same service on a personal computer for several months. We utilize the staggered release of the apps on different devices (iPhone, iPad, and Android) to identify a causal effect conditional on adoption of the mobile app. Consumers decrease their discretionary spending following the installation of the mobile app. The decrease is larger during evening hours and among individuals with lower proxies of self‐control, patterns consistent with a monitoring/self‐regulation channel and with benchmark models of costly self‐control.

There is a worldwide trend towards defined contribution savings plans, where investors are often able to select their own portfolios. How much is this freedom of choice worth? We present retirement investors with information about the distribution of outcomes they could expect to obtain from the portfolios they picked for themselves, and the same information for the median portfolio selected by their peers. A majority of our survey participants actually prefer the median portfolio to the one they picked for themselves. We investigate various explanations for these findings and offer some evidence that the results are partly attributable to the fact that investors do not have well‐defined preferences.