Appointments Planner Calendar is an Android app that helps you manage your appointments efficiently. Developed by Laurentiu Popa, this free app falls in the Business & Productivity category. With this app, you can customize your schedule for each day, add holidays and non-working days, and attach different options to your appointments like prices, colors, address, and duration.

One of the most useful features of this app is the option to create up to 10 different groups and invite your colleagues to join the group or join others' invitations. You can also send SMS reminders to your customers, check and export reports, see all details about your clients, check all reminders, and see all upcoming appointments. The app offers a free trial version with the ability to add up to 20 appointments. If you find the app useful, there are various affordable subscription options to choose from.