# One Calendar vs WidgetCal

The clearest difference is update cadence: One Calendar at fortnightly against WidgetCal's every 32 months. One Calendar also leads on ratings volume (21K vs 1) and device support (4 vs 2). WidgetCal's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. One Calendar sells 1 one-off in-app purchase and WidgetCal sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

WidgetCal holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: One Calendar has 21K ratings behind it against 1, so its average is the more settled of the two.

One Calendar ships an update fortnightly, WidgetCal every 32 months. The most recent releases landed on September 25, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | One Calendar | WidgetCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (21K ratings)](https://appshunter.io/ios/app/one-calendar/id1238379385/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/widgetcal-widget-calculator/id6468929338/reviews)** |
| Number of ratings | **21K** | 1 |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 32 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 89 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Code Spark](https://appshunter.io/developer/1238379384) | [杏娣 吴](https://appshunter.io/developer/1275821426) |

## What reviewers say

### 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


### WidgetCal

[App page](https://appshunter.io/ios/app/widgetcal-widget-calculator/id6468929338)

Perform calculations directly from your home screen with advanced functions. Customize your experience with multiple themes. Unlock premium features through a subscription.

**Highlights:** Home screen widget calculator, Trigonometric and calculus functions, Over 10 beautiful themes, No ads, Monthly/annual subscription for Pro features

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WidgetCal Pro | $0.99 | per month |
| WidgetCal Pro | $3.99 | per year |


## Frequently asked questions

### Is One Calendar free?

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

### Is WidgetCal free?

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

### Which has better reviews, One Calendar or WidgetCal?

WidgetCal is rated higher. One Calendar averages 4.8 out of 5 from 21K ratings, while WidgetCal averages 5.0 from 1 ratings.

### Do One Calendar or WidgetCal have ads?

Neither One Calendar nor WidgetCal shows ads.

### Which is updated more often, One Calendar or WidgetCal?

One Calendar ships an update fortnightly, and WidgetCal every 32 months. Most recently, One Calendar was updated on September 25, 2026 and WidgetCal on August 27, 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.*