Calendar Z vs Calendar.online
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calendar Z
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.
- Integrated reminder system
- Apple Watch compatibility
- Advanced repeating event setup
- Event display on Map
- Widget support
- Template function for quick event addition
- Customizable appearance
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Calendar Z is a simple yet high-level calendar app. With an integrated reminder system, it makes schedule management just that much easier. ・Works with the AppleWatch. ・Integrated reminder system. Both reminders and events are displayed on the calendar. ・Works with the iPad's Multitasking feature. Start this app while using other apps by sliding from the sides. ・Set up complicating repeating events, such as "the end of every month", "the last Saturday of each month", etc. ・Display events on the Map, and quickly access links. ・Works with widgets; you can quickly check your schedule. ・Can be displayed in landscape mode. When using side view, event start time is also displayed on the calendar. ・The calendar automatically adjusts; even if you have many events planned they will not be hidden. ・Includes a template function. Register events and reminders to a template to make addition even faster. ・Customize its appearance as you see fit. Change the calendar theme color to your favorite color. ・Change when the week begins as well as the color. ・You can use 3D touch shortcut menu for create new event or reminder.
Calendar.online
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.
- Shareable access links
- Role-based permissions (admin, editor, reader)
- Password protection for links
- Customizable access link views
- Dashboard for managing calendars
- Device bookmarking
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Our product is a free online calendar for teams and groups with easy access via access links without login. An access link is structured according to the following scheme: https://calendar.online/68dbf6166ace2865ccd7 Each access link has a specific permission. E.g. administrator, editor or reader. Use the admin link to manage your calendar. You can save this link as a bookmark on all your devices, for example. You could forward the editor or reader link to your teammates. Additional settings can be made for each access link. For example: - Permissions for specific sub-calendars - Password protection for extra security - Default access link view (for example 'day', 'week' and so on) - Custom access links. For example: https://calendar.online/sports In the dashboard view of the app you can add existing access links or register a new calendar. In this case, the admin link will be added automatically on the dashboard. You can access the dashboard from the calendar at any time using the button in the top left corner. To open the settings of a calendar, please open the calendar via the administrator link and then click on the gear symbol at the top right corner.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 October 29, 2026 and October 25, 2026 respectively.
| Parameter | Calendar Z | Calendar.online |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (722 ratings) | 4.7 (40 ratings) — better |
| Positive reviews | 65.1% of reviews | 94.1% of reviews — better |
| Number of ratings | 722 — better | 40 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 67 MB |
| Age rating | 17+ | 4+ |
| Developer | PiyoLog Inc. | Kalender.digital |
Customer experience
Calendar Z
Calendar.online
Bugs and requests
Calendar Z
Reported bugs
4 issues- 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
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calendar Z
- Disappear Ads$1.99
Calendar.online
No in-app purchases
Questions
Is Calendar Z free?
Is Calendar.online free?
Which has better reviews, Calendar Z or Calendar.online?
Do Calendar Z or Calendar.online have ads?
Which is updated more often, Calendar Z or Calendar.online?
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