# Calendar Island vs ClockSync Pro

The clearest difference is in-app purchases: ClockSync Pro at none against Calendar Island's 1. ClockSync Pro also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Calendar Island sells 1 one-off in-app purchase. ClockSync Pro asks for nothing beyond the download.

## The numbers

| Metric | Calendar Island | ClockSync Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calendar-island/id6469671638/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 1 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZIZICICI LIMITED](https://appshunter.io/developer/1564555697) | [春演 余](https://appshunter.io/developer/1886758083) |

## What reviewers say

### Calendar Island

[App page](https://appshunter.io/ios/app/calendar-island/id6469671638)

View your calendars and reminders directly on your device's Dynamic Island or lock screen. Tap items to navigate instantly and refresh content efficiently. Pro users can mark reminders as complete with a simple double-tap.

**Highlights:** Dynamic Island calendar and reminder display, Lock screen widgets, Direct item tapping for navigation, Scheduled content refresh, Pro feature: quick reminder completion

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $3.99 | one-time |


### ClockSync Pro

[App page](https://appshunter.io/ios/app/clocksync-pro/id6814334818)

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Island free?

Calendar Island is free to download, with in-app purchases available.

### Is ClockSync Pro free?

ClockSync Pro is free to download, with no in-app purchases.

### Do Calendar Island or ClockSync Pro have ads?

Neither Calendar Island nor ClockSync Pro shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*