# KairoProject vs Nextcloud Calendar

The clearest difference is in-app purchases: Nextcloud Calendar at none against KairoProject's 2. Nextcloud Calendar also leads on iOS requirement (16.4 vs 18.6). KairoProject's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. KairoProject sells 2 in-app purchases, starting at $8.99 per month. Nextcloud Calendar asks for nothing beyond the download.

KairoProject ships an update every 5 days, Nextcloud Calendar every 2 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | KairoProject | Nextcloud Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/nextcloud-calendar/id6766678698/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 27 MB | 52 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matthieu Guillon](https://appshunter.io/developer/1789846223) | [Soluce Technologies](https://appshunter.io/developer/1626802271) |

## What reviewers say

### KairoProject

[App page](https://appshunter.io/ios/app/kairoproject/id6748902716)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $8.99 | per month |
| Premium Annual subscription | $89.99 | per year |


### Nextcloud Calendar

[App page](https://appshunter.io/ios/app/nextcloud-calendar/id6766678698)

Manage your Nextcloud calendars with a simple mobile app. View, create, and organize events with real-time synchronization across multiple instances. Supports creating meetings with video conference links.

**Highlights:** Automatic calendar detection, View, create, and manage events, Real-time synchronization, Multi-account support, Create meetings with video conference links, Switch between multiple Nextcloud instances

**In-app purchases:** none


## Frequently asked questions

### Is KairoProject free?

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

### Is Nextcloud Calendar free?

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

### Do KairoProject or Nextcloud Calendar have ads?

Neither KairoProject nor Nextcloud Calendar shows ads.

### Which is updated more often, KairoProject or Nextcloud Calendar?

KairoProject ships an update every 5 days, and Nextcloud Calendar every 2 weeks. Most recently, KairoProject was updated on October 6, 2026 and Nextcloud Calendar on October 8, 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.*