# Proton Calendar vs Corvus Dispatch

The clearest difference is in-app purchases: Corvus Dispatch at none against Proton Calendar's 2. Corvus Dispatch also leads on iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Proton Calendar sells 2 one-off in-app purchases. Corvus Dispatch asks for nothing beyond the download.

## The numbers

| Metric | Proton Calendar | Corvus Dispatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (1.6K ratings)](https://appshunter.io/ios/app/proton-calendar-secure-events/id1514709943/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 40.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free | — |
| Size | 185 MB | 26 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Proton AG](https://appshunter.io/developer/979659484) | [Echo911 LLC](https://appshunter.io/developer/1582749823) |

## What reviewers say

### Proton Calendar

[App page](https://appshunter.io/ios/app/proton-calendar-secure-events/id1514709943)

This app helps you manage your schedule with privacy in mind. It offers various viewing options, reminders, and recurring event creation. All your data is protected by end-to-end encryption and strict Swiss privacy laws, ensuring your personal information is not tracked or harvested.

**Highlights:** Agenda and day view, View and reply to invites, Automatic event addition from email, Light and dark mode, Multiple reminders, Recurring events, Cross-device sync

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mail Plus (1 year) | $59.99 | one-time |
| Proton Unlimited | $149.99 | one-time |

**What reviewers like**

- 🚀 Intuitive interface
- 🔒 Secure and private
- 👍 Good integration with Proton suite
- 👍 Visually appealing design

**What reviewers complain about**

- 🐛 Slow performance and crashes
- 🔍 Lacking search functionality
- 📅 Missing advanced calendar views (week, month)
- 🔗 Limited integration with other calendars

**Reported bugs**

- Issues with time zone settings
- Notifications not working reliably
- Inability to edit shared events

**Requested features**

- Widgets for quick access
- Ability to invite and share calendars with others
- Support for importing/exporting calendar data
- Customization options (colors, alerts, etc.)
- iPad-optimized version


### Corvus Dispatch

[App page](https://appshunter.io/ios/app/corvus-dispatch/id6480003204)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Proton Calendar free?

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

### Is Corvus Dispatch free?

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

### Do Proton Calendar or Corvus Dispatch have ads?

Neither Proton Calendar nor Corvus Dispatch shows ads.

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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.*