For now, this app is perfect for those who just want to manage their bedtime and wake-up time.The simple and intuitive design makes it stress-free to use.The features of the app are as follows.- You can manually record your bedtime and wake-up time.・You can also record whether you have taken medication or not and notes.・By setting your oral medications in advance, you can also record the medications you have taken.- You can check your sleep time record in calendar format.- You can also visualize your sleep time in graphs on a weekly, monthly, and yearly basis.- You can output the sleep rhythm graph as a PDF.