# NUM Calendar vs cool

The clearest difference is in-app purchases: cool at none against NUM Calendar's 1. cool also leads on update cadence (every 3 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NUM Calendar sells 1 in-app purchase, starting at $2.99 per month. cool asks for nothing beyond the download.

NUM Calendar ships an update every 9 days, cool every 3 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NUM Calendar | cool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 2 MB | 8 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Oleksandr Nikolaichuk](https://appshunter.io/developer/1854711899) | [Zheniy Shacc](https://appshunter.io/developer/1886376938) |

## What reviewers say

### NUM Calendar

[App page](https://appshunter.io/ios/app/num-calendar/id6755594678)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NUM Calendar | $2.99 | per month |


### cool

[App page](https://appshunter.io/ios/app/cool-n/id6801367134)

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

**In-app purchases:** none


## Frequently asked questions

### Is NUM Calendar free?

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

### Is cool free?

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

### Do NUM Calendar or cool have ads?

Neither NUM Calendar nor cool shows ads.

### Which is updated more often, NUM Calendar or cool?

NUM Calendar ships an update every 9 days, and cool every 3 days. Most recently, NUM Calendar was updated on October 7, 2026 and cool on October 8, 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.*