# Important Dates vs Calender

The clearest difference is rating: Important Dates at 2.0 against Calender's 1.0. Important Dates also leads on in-app purchases (none vs 2). Calender's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Calender sells 2 in-app purchases, starting at $0.99 per month. Important Dates asks for nothing beyond the download.

Important Dates holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Important Dates ships an update every 18 months, Calender every 12 months. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Important Dates | Calender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/important-dates-countdown/id890055629/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/calender-event-reminder/id1625304072/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 18 months | **Every 12 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 12 MB | 10 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alain Lima](https://appshunter.io/developer/789421888) | [Hetal Thummar](https://appshunter.io/developer/1609188580) |

## 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


### Calender

[App page](https://appshunter.io/ios/app/calender-event-reminder/id1625304072)

Never forget important dates like birthdays and anniversaries again. This app provides customizable reminders for all your special occasions, ensuring you celebrate every memorable moment.

**Highlights:** Customizable reminders, Birthday and anniversary alerts, Add custom special days, Notifications for events, Supports various devices

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads For One Month | $0.99 | per month |
| Remove Ads For One Year | $8.49 | per year |


## Frequently asked questions

### Is Important Dates free?

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

### Is Calender free?

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

### Which has better reviews, Important Dates or Calender?

Important Dates is rated higher. Important Dates averages 2.0 out of 5 from 1 ratings, while Calender averages 1.0 from 1 ratings.

### Do Important Dates or Calender have ads?

Both Important Dates and Calender show ads.

### Which is updated more often, Important Dates or Calender?

Important Dates ships an update every 18 months, and Calender every 12 months. Most recently, Important Dates was updated on October 1, 2026 and Calender on October 11, 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.*