Calendar S - Simple Efficient

About this app

Calendar S, an efficient calendar to-do app, reduces the operation to the simplest and mentions the highest efficiency. With a few simple operations, you can organize your daily life, study, work, and fitness. You can use the to-do and calendar together to focus on the completion status or use the calendar to arrange your schedule carefully. No ads, no fees Minimalist design: the interface is clear and intuitive, and the details are carefully designed to make you more aware of your schedule Data security: you can sync with the server without logging in Personalized reminder: multiple circular reminder modes to meet various personalized needs Simple operation: Convenient and easy to use, clear function at a glance, operation as you want Ebbinghaus: Memory curve circulation mode, helps learning working memory, a good helper for learning Pomodoro Clock: focus on time, with white noise, let you concentrate on doing the things in front of you, and also help you fall asleep Operation history: complete event records and operation records for easy inquiry Lunar calendar adaptation: carefully adapted to the lunar cycle reminder mode, more suitable for Chinese people Seamless connection: system calendar import, schedule seamless connection Automatic processing: Unfinished to-do events are automatically moved to today, and completed events are automatically removed the next day without tedious operations Stay tuned: Carefully select more loving ringtones Share schedules and learn effective arrangements for others Looking forward to your further suggestions: Email: swiftstar001@gmail.com

Fix the bug of display error in 2021 Happy New Year!!!

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1. First observed Aug 31, 2026 · 1:13 PM Free