# Chert App vs Countdown 321

The clearest difference is in-app purchases: Chert App at none against Countdown 321's 2. Chert App also leads on iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Countdown 321 sells 2 in-app purchases, starting at $1.99 per year. Chert App asks for nothing beyond the download.

## The numbers

| Metric | Chert App | Countdown 321 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (8 ratings)](https://appshunter.io/ios/app/countdown-321-widget/id6749746114/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 95.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zhutian Gao](https://appshunter.io/developer/1823134585) | [帆 邱](https://appshunter.io/developer/1766624521) |

## What reviewers say

### Chert App

[App page](https://appshunter.io/ios/app/chert-app/id6749668387)

**Features:** macOS Compatibility

**In-app purchases:** none


### Countdown 321

[App page](https://appshunter.io/ios/app/countdown-321-widget/id6749746114)

Easily track important upcoming events and past milestones with a clean, minimalist interface. Get instant updates via home screen widgets and sync your data across devices with iCloud. Never forget a special day again.

**Highlights:** Countdown and count-up days, Reminders and notifications, Life calendar visualization, Timeline view, Minimalist design, Home screen widgets, iCloud sync

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CountdownPro | $1.99 | per year |
| Lifetime Pro | $0.99 | one-time |


## Frequently asked questions

### Is Chert App free?

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

### Is Countdown 321 free?

Countdown 321 is free to download, with in-app purchases available.

### Do Chert App or Countdown 321 have ads?

Neither Chert App nor Countdown 321 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.*