# CalendarTV vs OneOpen

The clearest difference is price: OneOpen at Free against CalendarTV's $14.99. OneOpen also leads on update cadence (every 4 days vs every 4 months). CalendarTV's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

OneOpen is free to download; CalendarTV costs $14.99 up front. OneOpen sells 2 in-app purchases, starting at $0.99 per year. CalendarTV asks for nothing beyond the download.

CalendarTV ships an update every 4 months, OneOpen every 4 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | CalendarTV | OneOpen |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/calendartv/id1406898032/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 4 MB | 73 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPad, Apple TV | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Copenhagen ApS](https://appshunter.io/developer/1406898031) | [Freedom Dimension (shenzhen) Technology Co., Ltd](https://appshunter.io/developer/6776064465) |

## What reviewers say

### CalendarTV

[App page](https://appshunter.io/ios/app/calendartv/id1406898032)

Enhance your standard iCal with a beautiful, customizable calendar design. Ideal for wall-mounted displays in homes or companies, it ensures you never miss important events like agreements, holidays, or birthdays.

**Highlights:** iCal to Apoino design conversion, Automatic updates for new events, Smart clock functionality, Selectable event categories, Customizable start day of the week, Multilingual support (8 languages)

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

**In-app purchases:** none


### OneOpen

[App page](https://appshunter.io/ios/app/oneopen-file-viewer/id6792251542)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Access Annual | $0.99 | per year |
| Advanced Access Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is CalendarTV free?

CalendarTV costs $14.99, with no in-app purchases.

### Is OneOpen free?

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

### Do CalendarTV or OneOpen have ads?

Neither CalendarTV nor OneOpen shows ads.

### Which is updated more often, CalendarTV or OneOpen?

CalendarTV ships an update every 4 months, and OneOpen every 4 days. Most recently, CalendarTV was updated on October 24, 2026 and OneOpen on October 29, 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.*