# CCal 11 Pro

> Intuitive iOS calendar app for efficient schedule management with drag-and-drop. (iPhone/iPad app by Catalystwo.)

- Source: https://appshunter.io/ios/app/ccal-11-pro/id651313515 (this page in markdown: same URL + `.md`)
- Developer: [Catalystwo](https://appshunter.io/developer/1651079501)
- Category: Productivity, Business
- Price: $3.99
- Rating: 4.70/5 from 86 App Store ratings · 50 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 25 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2013-06-23
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ccal-11-pro/id651313515/reviews.md

## What is CCal 11 Pro?

CCal makes it easy to manage your busy schedule quickly and efficiently.
With its intuitive design, you can handle events and reminders smoothly on your iPhone.

CCal is an intelligent and elegant calendar application.

=== Features ===

- Drag & drop interface
  Simply press and hold an event, then move it to create or edit

- Easy date changes
  Move events directly to another day

- Color-coded event management
  Organize your schedule visually with custom colors

- Undo / redo support
  Includes iPhone’s “shake to undo” with multiple undo and redo actions

- Copy & paste events

- Delete events by dragging to trash

- Customizable backgrounds
  Change colors based on weekdays or event presence

- Supports over 400 international time zones

- Flexible time input
  Use either a spinning wheel or numeric keypad

- Continuous scroll calendar view
  View current and next month seamlessly without breaks

=== Supported Languages ===
English, Japanese

## Key features

- Drag & drop event creation and modification
- Customizable background colors
- Support for over 400 international time zones
- Spinning-wheel or ten-key time input
- Continuous month display in scroll mode
- Shake to undo/redo functionality
- Copy, paste, and delete events

## Chart rankings

- #146 in Top Paid · Productivity (US App Store)

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/ccal-11-pro/id651313515/reviews.md

### 5/5 — Googleタスクとの同期に不具合

*2026-08-18*

とても便利に使っています。
色々試しましたが、カレンダーアプリの最高峰だと思います。

一つだけ問題が、Googleタスクと同期すると、よくエラーになります。再度同期するとエラーは消えますが、同じタスクが二つになっています。
このエラーがなければ、本当に最高😀
でも、評価は、５点です。

### 5/5 — Sync

*2026-07-23*

Hello there, I should have written this review a long time ago, I have been using this calendar for years, it is my only and favorite calendar since then. Easy to add on schedule and easy to check them. But my only issue is the sync my calendar to other devices, I tried once with my google account and lost my half my schedules, and I can’t recover them, so I have to run to the Apple Store to back up my iPhone to recover my calendar. 
So I am asking is there tutorial step by step to show the correct and safe way  to sync my calendar to my several apple devices ? Now I am really afraid to sync again.

### 2/5 — 同期エラー

*2026-07-13*

最新版にアップデート後からGoogleカレンダーとの同期ができなくなりました。
エラーは「invalid_client: The provided client secret is invalid.」です。
おとといまでは正常に同期できていました。

### 5/5 — 구글 싱크 오류

*2026-07-12*

업데이트 이후 구글 싱크 오류 납니다. 수정해 주세요.

### 1/5 — 구글과 연동이 안됩니다

*2026-07-11*

빠른 조치 업데이트가 필요합니다

### 5/5 — 良い！

*2025-04-16*

非常に気に入ってます。何年も面倒みてもらってます。ありがとうございます。

### 5/5 — スケジュールアプリ

*2025-03-17*

どのスケジュールより見やすくつかいやすい。

### 5/5 — 超便利

*2025-02-02*

とっても便利。今度はApple Watch対応希望〜。

### 3/5 — Googleカレンダーの同期

*2025-01-20*

同期が上手くいかず、パソコンでは表示されているGoogleカレンダーの予定がiPhoneで表示されない。
またはその逆で、iPhoneでは二重に表示されたりする。
これらが解消されれば本当に言うことなしなのになぁ

### 2/5 — いいアプリだったけど。。。

*2024-11-23*

10年以上このアプリを使っていて気に入っていたのですが、Googleカレンダー同期で使用していて致命的な不具合がある

Googleカレンダーのマイカレンダーを変更すると重複してイベントが作られてしまい同じイベントが何個も作られるバグが。。。

例えば、カレンダー1でイベント作成したものをカレンダー2に変更する→
カレンダー1のイベントはそのまま消えずに残り、カレンダー2のイベントが作られる。

なので、Googleカレンダー上にはカレンダー2のイベントだけなのに対して、CCALのカレンダー上にはカレンダー1とカレンダー2の２つが作られてしまう。

メールで問い合わせできるフォームがあるので送っても、半年以上返信がないので何を言っても無駄なのかもしれません。。

アプリを削除したりGoogleにログインしなおしたり色々試しても
Googleでマイカレンダーを変更する度に
CCALカレンダー上にイベントが複製されてしまうので同じようにGoogleのマイカレンダーで予定を変更したりして使う人によっては使い物にならないと思う。

## Frequently asked questions about CCal 11 Pro

### What is the price of CCal 11 Pro?

CCal 11 Pro is a paid app, priced at $3.99. This is a one-time purchase and does not involve a subscription.

### What devices does CCal 11 Pro support?

CCal 11 Pro is compatible with iPhone, iPad, and iPod Touch devices, running on iOS.

### How often is CCal 11 Pro updated?

The app was last updated on March 16, 2025, indicating active development and support. Version 11.13.13 is the latest release.

### What is the age rating for CCal 11 Pro?

CCal 11 Pro has an age rating of 4+, making it suitable for a wide range of users.

### Can CCal 11 Pro sync with Google Calendar?

Yes, CCal 11 Pro is an intelligent calendar application that can upload to Google Calendar, facilitating seamless synchronization.

### Does CCal 11 Pro offer undo and redo functionality?

Yes, CCal 11 Pro supports iPhone's standard 'shake to undo' function, with multiple undos and redos available for easy error correction.

### How does CCal 11 Pro handle time zones?

CCal 11 Pro supports international time zones, covering more than 400 regions to help users manage schedules across different locations.

### What are the main benefits of using CCal 11 Pro over other calendar apps?

Users appreciate CCal 11 Pro for its sophisticated yet intuitive drag-and-drop interface, customizable backgrounds, and efficient event management features, as reflected in its 4.7-star rating.

## Version history (last 5 releases)

### 11.13.18 — 2026-07-16

Maintenance update

### 11.13.17 — 2026-07-13

Maintenance update

### 11.13.16 — 2026-07-12

Maintenance Update

### 11.13.15 — 2026-07-11

Maintenance update

### 11.13.14 — 2026-04-17

Maintenance update

## Apps similar to CCal 11 Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calendars: Schedule Planner](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326) | 4.7 (121,097) | Free | Productivity |
| [Google Calendar: Get Organized](https://appshunter.io/ios/app/google-calendar-get-organized/id909319292) | 4.5 (131,463) | Free | Productivity |
| [Simple Calendar - SimpleCal](https://appshunter.io/ios/app/simple-calendar-simplecal/id1227579630) | 4.7 (16,132) | Free | Productivity |
| [Simple Calendar: ToDo Planner](https://appshunter.io/ios/app/simple-calendar-todo-planner/id1422994973) | 4.6 (6,358) | Free | Productivity |
| [Calendar · Planner & Reminders](https://appshunter.io/ios/app/calendar-planner-and-reminders/id1113106806) | 4.6 (59,091) | Free | Productivity |
| [Tiny Calendar: Planner & Tasks](https://appshunter.io/ios/app/tiny-calendar-planner-and-tasks/id514917848) | 4.6 (20,601) | Free | Productivity |

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All apps by Catalystwo: https://appshunter.io/developer/1651079501

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*