# Calendar Z vs Calendar.online

The clearest difference is in-app purchases: Calendar.online at none against Calendar Z's 1. Calendar.online also leads on ads (none vs shown) and review sentiment (94% vs 65%). Calendar Z's advantage is ratings volume (722 vs 40) and update cadence (every 5 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Calendar Z sells 1 one-off in-app purchase. Calendar.online asks for nothing beyond the download.

Calendar.online holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Calendar Z has 722 ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 65% of Calendar Z's written reviews are positive against 94% of Calendar.online's.

Calendar Z ships an update every 5 weeks, Calendar.online every 2 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calendar Z | Calendar.online |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (722 ratings)](https://appshunter.io/ios/app/calendar-z/id1035515136/reviews) | **[4.7 (40 ratings)](https://appshunter.io/ios/app/calendaronline/id1607856409/reviews)** |
| Number of ratings | **722** | 40 |
| Positive reviews | 65.1% of reviews | **94.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 67 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [Kalender.digital](https://appshunter.io/developer/1584623403) |

## What reviewers say

### Calendar Z

[App page](https://appshunter.io/ios/app/calendar-z/id1035515136)

A straightforward yet powerful calendar application designed for efficient schedule management. It features an integrated reminder system, supports Apple Watch, and offers advanced options for recurring events and event display.

**Highlights:** Integrated reminder system, Apple Watch compatibility, Advanced repeating event setup, Event display on Map, Widget support, Template function for quick event addition, Customizable appearance

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disappear Ads | $1.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- 🎨 Customizable colors and views
- 🗓️ Comprehensive monthly calendar view
- 🔗 Integrates with reminders and other calendars
- 🔍 Clear event details and overview

**What reviewers complain about**

- 🐛 Disappearing past events and data loss
- ⚠️ Sync and compatibility issues with other devices
- 🔍 Difficulty deleting or editing events
- 🗓️ Continuous calendar view can be confusing
- 🔔 Unreliable or missing notifications

**Reported bugs**

- Events disappearing or not saving properly
- Incorrect date/time display and sync issues
- Crashes or freezes after updates
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to view and restore past events
- Improved sync and cross-device functionality
- More customization options for layout and colors
- Easier event management (editing, deleting, repeating)
- Better notification system and controls


### Calendar.online

[App page](https://appshunter.io/ios/app/calendaronline/id1607856409)

This free online calendar facilitates team collaboration with shareable access links. Manage permissions, set passwords, and customize views for seamless group scheduling. Access your calendar from any device with a simple bookmark.

**Highlights:** Shareable access links, Role-based permissions (admin, editor, reader), Password protection for links, Customizable access link views, Dashboard for managing calendars, Device bookmarking

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

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Z free?

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

### Is Calendar.online free?

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

### Which has better reviews, Calendar Z or Calendar.online?

Calendar.online is rated higher. Calendar Z averages 4.3 out of 5 from 722 ratings, while Calendar.online averages 4.7 from 40 ratings.

### Do Calendar Z or Calendar.online have ads?

Calendar Z shows ads; Calendar.online does not.

### Which is updated more often, Calendar Z or Calendar.online?

Calendar Z ships an update every 5 weeks, and Calendar.online every 2 months. Most recently, Calendar Z was updated on November 1, 2026 and Calendar.online on October 25, 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.*