# Calendar Time Sync vs Nook

The clearest difference is in-app purchases: Calendar Time Sync at none against Nook's 6. Calendar Time Sync also leads on ads (none vs shown). Nook's advantage is iOS requirement (15.0 vs 18.2). On price and device support there is nothing between them.

Both are free to download. Nook sells 6 in-app purchases, starting at $2.99 per month. Calendar Time Sync asks for nothing beyond the download.

## The numbers

| Metric | Calendar Time Sync | Nook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Fortnightly |
| Size | 2 MB | 123 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cornel Meza](https://appshunter.io/developer/1826438813) | [yasuhiro kojima](https://appshunter.io/developer/1244729145) |

## What reviewers say

### Calendar Time Sync

[App page](https://appshunter.io/ios/app/calendar-time-sync/id6748588734)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nook

[App page](https://appshunter.io/ios/app/nook-cozy-virtual-study-room/id6759188662)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nook Pass (1 Month) | $2.99 | per month |
| Nook Pass (1 Year) | $29.99 | per year |
| Coffee Tip | $0.99 | one-time |
| Cookie Tip | $2.99 | one-time |
| Slice of Cake Tip | $6.99 | one-time |
| Nook Pass (Lifetime) | $59.99 | one-time |


## Frequently asked questions

### Is Calendar Time Sync free?

Calendar Time Sync is free to download, with no in-app purchases.

### Is Nook free?

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

### Do Calendar Time Sync or Nook have ads?

Nook shows ads; Calendar Time Sync does not.

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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.*