# Occasions 3 vs One Calendar

The clearest difference is price: One Calendar at Free against Occasions 3's $2.99. One Calendar also leads on update cadence (fortnightly vs every 3 months) and ratings volume (21K vs 2.4K). Occasions 3's advantage is in-app purchases (none vs 1). On rating, review sentiment, ads and device support there is nothing between them.

One Calendar is free to download; Occasions 3 costs $2.99 up front. One Calendar sells 1 one-off in-app purchase. Occasions 3 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Occasions 3 against 4.8 for One Calendar. That said, the two scores are not equally well evidenced: One Calendar has 21K ratings behind it against 2.4K, so its average is the more settled of the two. Written reviews are what separate them: 75% of Occasions 3's written reviews are positive against 81% of One Calendar's.

Occasions 3 ships an update every 3 months, One Calendar fortnightly. Both last shipped on November 1, 2026.

## The numbers

| Metric | Occasions 3 | One Calendar |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/occasions-3-reminders/id541109232/reviews)** | [4.8 (21K ratings)](https://appshunter.io/ios/app/one-calendar/id1238379385/reviews) |
| Number of ratings | 2.4K | **21K** |
| Positive reviews | 74.6% of reviews | **80.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 89 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Hand Carved Code, LLC](https://appshunter.io/developer/318103551) | [Code Spark](https://appshunter.io/developer/1238379384) |

## What reviewers say

### Occasions 3

[App page](https://appshunter.io/ios/app/occasions-3-reminders/id541109232)

Never forget important dates like birthdays, anniversaries, and holidays again. This app helps you track special events, set multiple custom alerts, and even send well wishes directly from your device. It offers seamless integration with your contacts and calendar, with options for customization and convenient access via widgets and Apple Watch.

**Highlights:** Sync events with Contacts, Multiple custom alerts per event, Categorized holiday selection, Add events to device calendar, Send messages directly from app, Customizable themes and icons, Widgets and Apple Watch app, Automatic iCloud backup

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Useful calendar
- 👍 Outstanding app
- 👍 Excellent app
- 👍 Great app
- 👍 Reliable and fun to use

**What reviewers complain about**

- 🐛 Annoying app
- 🐛 Duplicate notifications
- 🐛 Sync issues
- 🐛 Duplicate notifications
- 🐛 Duplicate notifications

**Reported bugs**

- Duplicate notifications
- Sync issues
- Data loss
- Compatibility issues with older devices
- Facebook SDK error

**Requested features**

- Add military birthdays
- Repeat functionality
- Sync with Apple Watch
- Separate categories for events
- Zodiac sign display


### One Calendar

[App page](https://appshunter.io/ios/app/one-calendar/id1238379385)

Consolidate all your digital calendars into a single, easy-to-read view. Manage appointments, events, and birthdays from various providers like Google, Outlook, iCloud, and more, all within one application.

**Highlights:** Integrates multiple calendar providers, Easy-to-read overview, Manage appointments and events, View birthdays, Cross-platform availability

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneCalendar premium | $5.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Clean and simple interface
- 👍 Integrates multiple calendars
- 🚀 Syncs across devices
- 👍 Customizable colors and themes

**What reviewers complain about**

- 🐛 Syncing issues
- 🐛 Bugs and glitches
- 🔒 Lacks security features
- 🔋 Drains battery
- 👎 Restrictive features in free version

**Reported bugs**

- Sync errors
- Unresponsive buttons
- Incorrect time zone display
- Duplicate events
- Inability to delete future occurrences of recurring events

**Requested features**

- Multiple reminders for events
- Ability to edit recurring events
- Option to change event calendar after creation
- Printing support
- More customization options


## Frequently asked questions

### Is Occasions 3 free?

Occasions 3 costs $2.99, with no in-app purchases.

### Is One Calendar free?

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

### Which has better reviews, Occasions 3 or One Calendar?

Occasions 3 is rated higher. Occasions 3 averages 4.8 out of 5 from 2.4K ratings, while One Calendar averages 4.8 from 21K ratings.

### Do Occasions 3 or One Calendar have ads?

Neither Occasions 3 nor One Calendar shows ads.

### Which is updated more often, Occasions 3 or One Calendar?

Occasions 3 ships an update every 3 months, and One Calendar fortnightly. Most recently, Occasions 3 was updated on November 1, 2026 and One Calendar on November 1, 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.*