Users can nowadays take advantage of Digital-Self Control Tools (DSCT) to self-regulate their usage of applications and websites by means of interventions like timers and lockout mechanisms. However, DSCTs mainly focus on the interaction between users and a single device at a time, while people typically use more than one device, and in a concurrent way. This motivates the need of exploring tools that can adapt to multi-device settings. We present FeelHabits, a DSCT that allows users to set up, through a novel approach, multi-device intentions, i.e., contextual time and launch limits for the simultaneous and/or alternating use of the PC and the smartphone. Stemming from the defined intentions, FeelHabits employs different levels of severity to warn the user about a reached limit on the currently used device. A preliminary study on 7 participants suggests that FeelHabits might be effective for reducing some multi-device behaviors, and opens the way for further research.