# Calendar Z vs Simple Calendar Tracker

The clearest difference is rating: Calendar Z at 4.3 against Simple Calendar Tracker's 2.9. Calendar Z also leads on ratings volume (723 vs 11) and update cadence (every 5 weeks vs every 3 months). Simple Calendar Tracker's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

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

Calendar Z holds the better App Store score, 4.3 against 2.9. That said, the two scores are not equally well evidenced: Calendar Z has 723 ratings behind it against 11, 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 54% of Simple Calendar Tracker's.

Calendar Z ships an update every 5 weeks, Simple Calendar Tracker every 3 months. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Calendar Z | Simple Calendar Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (723 ratings)](https://appshunter.io/ios/app/calendar-z/id1035515136/reviews)** | [2.9 (11 ratings)](https://appshunter.io/ios/app/simple-calendar-tracker/id1509155697/reviews) |
| Number of ratings | **723** | 11 |
| Positive reviews | **65.0% of reviews** | 53.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 18 MB |
| Requires iOS | 16.6 | **14.5** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [Kitten Cat LLC](https://appshunter.io/developer/560904530) |

## 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


### Simple Calendar Tracker

[App page](https://appshunter.io/ios/app/simple-calendar-tracker/id1509155697)

Organize your schedule by tracking event occurrences across different calendars. Combine multiple calendars to identify recurring patterns and gain insights into your activities.

**Highlights:** Track event occurrences, Manage separate calendars, Combine calendars, Identify patterns, Schedule organization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Z free?

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

### Is Simple Calendar Tracker free?

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

### Which has better reviews, Calendar Z or Simple Calendar Tracker?

Calendar Z is rated higher. Calendar Z averages 4.3 out of 5 from 723 ratings, while Simple Calendar Tracker averages 2.9 from 11 ratings.

### Do Calendar Z or Simple Calendar Tracker have ads?

Calendar Z shows ads; Simple Calendar Tracker does not.

### Which is updated more often, Calendar Z or Simple Calendar Tracker?

Calendar Z ships an update every 5 weeks, and Simple Calendar Tracker every 3 months. Most recently, Calendar Z was updated on October 15, 2026 and Simple Calendar Tracker on October 3, 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.*