It’s totally up to you. You can use it manually or with your smartphone. Here are some of the key benefits of using the OOLER’s app: Set the perfect temperature from your phone. Set sleep schedules for automatic and precise temperature changes throughout the night. Use the Warm Awake feature as an alarm clock replacement (imagine waking up by having a gently warmed bed trigger your body's natural wake response!). You can easily adjust the bed temperature from the control unit.