# Important Dates vs Countdown & Calendar

The clearest difference is in-app purchases: Important Dates at none against Countdown & Calendar's 1. Important Dates also leads on update cadence (every 18 months vs every 65 months). Countdown & Calendar's advantage is iOS requirement (16.4 vs 18.0). On price there is nothing between them.

Both are free to download. Countdown & Calendar sells 1 one-off in-app purchase. Important Dates asks for nothing beyond the download.

Important Dates ships an update every 18 months, Countdown & Calendar every 65 months. The most recent releases landed on October 1, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Important Dates | Countdown & Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/important-dates-countdown/id890055629/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | **Every 18 months** | Every 65 months |
| Monetization | Ad-supported | — |
| Size | 12 MB | 66 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [Alain Lima](https://appshunter.io/developer/789421888) | [Thieu Khue](https://appshunter.io/developer/1554439862) |

## What reviewers say

### Important Dates

[App page](https://appshunter.io/ios/app/important-dates-countdown/id890055629)

Track upcoming events with a real-time countdown. Personalize the look with custom backgrounds and colors. Receive automatic notifications to stay informed.

**Highlights:** Unlimited event tracking, Customizable backgrounds, Customizable colors, Real-time countdowns, Automatic notifications

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

**In-app purchases:** none


### Countdown & Calendar

[App page](https://appshunter.io/ios/app/countdown-and-calendar/id1554439860)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is Important Dates free?

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

### Is Countdown & Calendar free?

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

### Which is updated more often, Important Dates or Countdown & Calendar?

Important Dates ships an update every 18 months, and Countdown & Calendar every 65 months. Most recently, Important Dates was updated on October 1, 2026 and Countdown & Calendar on September 24, 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.*