# EventHorizon vs CalenDual

The clearest difference is update cadence: CalenDual at every 2 days against EventHorizon's every 11 days. CalenDual also leads on iOS requirement (15.6 vs 17.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EventHorizon ships an update every 11 days, CalenDual every 2 days. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | EventHorizon | CalenDual |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/eventhorizon-smart-countdown/id6471359999/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | Free | Free |
| Size | 1 MB | 8 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ngoc Duong Bich](https://appshunter.io/developer/1633883173) | [Maxence Wright](https://appshunter.io/developer/1794795376) |

## What reviewers say

### EventHorizon

[App page](https://appshunter.io/ios/app/eventhorizon-smart-countdown/id6471359999)

Easily track all your important dates and events with custom timers. From vacations and birthdays to holidays and personal goals, this app helps you stay organized and never miss a moment. It supports a wide variety of event types for comprehensive tracking.

**Highlights:** Customizable event timers, Track unlimited events, Wide variety of event types, User-friendly interface, Personalized goal tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### CalenDual

[App page](https://appshunter.io/ios/app/calendual/id6741591229)

Never miss a special occasion again with this app that sends personalized, AI-generated messages automatically. It offers multilingual support, inspirational templates, and easy event management to help you celebrate effortlessly while maintaining a personal touch.

**Highlights:** Automatic message sending, AI-generated personalized messages, Multilingual and culturally adapted, Inspirational message templates, Interactive event calendar, Message tracking and notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EventHorizon free?

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

### Is CalenDual free?

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

### Do EventHorizon or CalenDual have ads?

Neither EventHorizon nor CalenDual shows ads.

### Which is updated more often, EventHorizon or CalenDual?

EventHorizon ships an update every 11 days, and CalenDual every 2 days. Most recently, EventHorizon was updated on September 29, 2026 and CalenDual on October 12, 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.*