# Rata vs Calenduo

The clearest difference is in-app purchases: Calenduo at none against Rata's 2. Calenduo also leads on ads (none vs shown) and update cadence (every 2 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Rata sells 2 in-app purchases, starting at $2.99 per month. Calenduo asks for nothing beyond the download.

Rata ships an update fortnightly, Calenduo every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Rata | Calenduo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 36 MB | 36 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Comeva Inc.](https://appshunter.io/developer/1755537877) | [Sebastian Britz](https://appshunter.io/developer/1763082684) |

## What reviewers say

### Rata

[App page](https://appshunter.io/ios/app/rata-shared-calendar/id6511228689)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rata Premium Monthly | $2.99 | per month |
| Rata Premium Annual | $19.99 | per year |


### Calenduo

[App page](https://appshunter.io/ios/app/calenduo-ai-shared-calendar/id6762887009)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rata free?

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

### Is Calenduo free?

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

### Do Rata or Calenduo have ads?

Rata shows ads; Calenduo does not.

### Which is updated more often, Rata or Calenduo?

Rata ships an update fortnightly, and Calenduo every 2 days. Most recently, Rata was updated on November 4, 2026 and Calenduo on October 31, 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.*