Calendar S Downloads & RevenueCalendar S - Simple Efficient · App Store
Not in any tracked top chart right now.
Updated 7 Nov 2026 · rankings refresh through the day
Developer寅康 童
CategoryProductivity
PriceFree
Released
Rating★ 5.0 (39)
Version1.1.5
Age rating4+
First seen by us
24 Oct 2026
Calendar S - Simple Efficient update history & changes
Last change · 3 events since 6 Mar 2020Full timeline ↓Full timeline · 2 events in the last 12 months
- 🆕Calendar S - Simple Efficient first spotted by AppInsiderChina (found via developer)
- 🆕Calendar S - Simple Efficient released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
39 ratings
Measured
Calendar S - Simple Efficient on the App Store
App details
App ID
1489584166
Publisher
寅康 童
On the store since
Mar 2020
6 years on the store
Minimum OS
iOS 9.0+
iPhone 4s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
4
EN JA ZH ZH
Size
181 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
39 ratings
Measured
Ratings
39
Measured
About Calendar S - Simple Efficient
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: [email protected]
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: [email protected]
Latest updates
1.1.5
Fix the bug of display error in 2021
Happy New Year!!!