# Calendar Island vs 优势AI伴学

The clearest difference is in-app purchases: 优势AI伴学 at none against Calendar Island's 1. 优势AI伴学 also leads on update cadence (every 2 days vs monthly) and iOS requirement (15.0 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. 优势AI伴学 asks for nothing beyond the download.

Calendar Island ships an update monthly, 优势AI伴学 every 2 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Calendar Island | 优势AI伴学 |
| --- | --- | --- |
| 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 | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 47 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ZIZICICI LIMITED](https://appshunter.io/developer/1564555697) | [Beijing Miduo Future Technology Co., Ltd.](https://appshunter.io/developer/1060419459) |

## 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 |


### 优势AI伴学

[App page](https://appshunter.io/ios/app/ai/id6800564785)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Island free?

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

### Is 优势AI伴学 free?

优势AI伴学 is free to download, with no in-app purchases.

### Do Calendar Island or 优势AI伴学 have ads?

Neither Calendar Island nor 优势AI伴学 shows ads.

### Which is updated more often, Calendar Island or 优势AI伴学?

Calendar Island ships an update monthly, and 优势AI伴学 every 2 days. Most recently, Calendar Island was updated on November 3, 2026 and 优势AI伴学 on November 6, 2026.

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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.*