# Shared Calendar vs Constellation Diary

The clearest difference is in-app purchases: Constellation Diary at none against Shared Calendar's 3. Constellation Diary also leads on iOS requirement (15.1 vs 18.0). Shared Calendar's advantage is update cadence (weekly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Shared Calendar sells 3 in-app purchases, starting at $1.99 per 7 days. Constellation Diary asks for nothing beyond the download.

Shared Calendar ships an update weekly, Constellation Diary monthly. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Shared Calendar | Constellation Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/shared-calendar-clanplan/id6475178746/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Freemium | — |
| Size | 57 MB | 48 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GRAPP LLP](https://appshunter.io/developer/1801956495) | [Michael Sproul](https://appshunter.io/developer/1863910911) |

## What reviewers say

### Shared Calendar

[App page](https://appshunter.io/ios/app/shared-calendar-clanplan/id6475178746)

This app helps families, couples, and friends coordinate schedules, manage tasks, and share locations. It offers a shared calendar, to-do lists with assignments, and real-time location tracking for enhanced organization and communication.

**Highlights:** Shared calendar synchronization, Task and chore assignment, Real-time location tracking, Place alerts for arrivals/departures, Group chat functionality, Shared location map, Private group spaces

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $1.99 | per 7 days |
| Premium Monthly | $5.99 | per month |
| Premium Yearly | $34.99 | per year |


### Constellation Diary

[App page](https://appshunter.io/ios/app/constellation-diary/id6758516652)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shared Calendar free?

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

### Is Constellation Diary free?

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

### Do Shared Calendar or Constellation Diary have ads?

Neither Shared Calendar nor Constellation Diary shows ads.

### Which is updated more often, Shared Calendar or Constellation Diary?

Shared Calendar ships an update weekly, and Constellation Diary monthly. Most recently, Shared Calendar was updated on October 13, 2026 and Constellation Diary on October 5, 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.*