Simple Calendar: Widget Cal is a free iPhone app developed by Heart Relay Inc. It falls under the category of Business & Productivity. This calendar app offers a convenient way to manage your schedule and stay organized.

With Simple Calendar: Widget Cal, you can easily check your schedule for the month at a glance. The app allows you to quickly register events and view them with ease. There are no complicated settings to deal with before using the calendar, making it user-friendly and accessible.

One of the standout features of this app is its widget support. The widget allows you to check the date, day of the week, and future plans for the day without opening the app. Additionally, a monthly calendar has been added to the widget, providing a comprehensive view of your schedule.

In terms of security, Simple Calendar: Widget Cal ensures that the information you add to the calendar is stored only on your device. This means that your data is not sent to an external server, giving you peace of mind.

Furthermore, this app supports dark mode, making it easy on the eyes and suitable for use in low-light environments.

Heart Relay Inc. is committed to improving the calendar app based on user feedback. They encourage users to send their requests and suggestions for future updates.

Overall, Simple Calendar: Widget Cal offers a straightforward and efficient way to manage your schedule on your iPhone. Whether you need to keep track of important appointments or plan your daily activities, this app provides the necessary tools in a user-friendly package.