# Cloud Calendars vs Duo

The clearest difference is update cadence: Duo at every 2 days against Cloud Calendars's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Cloud Calendars sells 4 in-app purchases, starting at $0.49 per month and Duo sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Cloud Calendars ships an update every 3 weeks, Duo every 2 days. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Cloud Calendars | Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (12 ratings)](https://appshunter.io/ios/app/cloud-calendars-sync-and-widget/id6744690319/reviews)** | — |
| Number of ratings | **12** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 47 MB | 4 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Arte Soft Ltd](https://appshunter.io/developer/1750513209) | [Mikalai Kuts](https://appshunter.io/developer/1757613729) |

## What reviewers say

### Cloud Calendars

[App page](https://appshunter.io/ios/app/cloud-calendars-sync-and-widget/id6744690319)

Consolidate your Google, iCloud, and Microsoft calendars with integrated weather forecasts. Plan your day efficiently with customizable widgets and multiple calendar views.

**Highlights:** Syncs Google, iCloud, and Microsoft calendars, Integrated weather forecasts, Customizable home screen widgets, Multiple calendar views (Day, Week, Month, Year, List), Drag-and-drop event editing, Create Google Meet and Microsoft Teams links

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Monthly | $0.49 | per month |
| Advanced Yearly | $4.99 | per year |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $49.99 | per year |


### Duo

[App page](https://appshunter.io/ios/app/duo-split-screen-dual-window/id6802056782)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TwoUp Plus Week | $6.99 | per 7 days |
| TwoUP Plus Year | $59.99 | per year |


## Frequently asked questions

### Is Cloud Calendars free?

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

### Is Duo free?

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

### Do Cloud Calendars or Duo have ads?

Neither Cloud Calendars nor Duo shows ads.

### Which is updated more often, Cloud Calendars or Duo?

Cloud Calendars ships an update every 3 weeks, and Duo every 2 days. Most recently, Cloud Calendars was updated on October 7, 2026 and Duo on September 30, 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.*