# Calendar Clock vs Mon Service

The clearest difference is price: Mon Service at Free against Calendar Clock's $0.99. Mon Service also leads on update cadence (every 8 days vs every 41 months) and iOS requirement (14.0 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

Mon Service is free to download; Calendar Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calendar Clock ships an update every 41 months, Mon Service every 8 days. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Calendar Clock | Mon Service |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 8 days** |
| Monetization | Paid | — |
| Size | 4 MB | 57 MB |
| Requires iOS | 26.5 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Systemiko Inc.](https://appshunter.io/developer/680630947) | [Bilguun Demberel](https://appshunter.io/developer/1678891308) |

## What reviewers say

### Calendar Clock

[App page](https://appshunter.io/ios/app/calendar-clock/id1451445740)

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

**Highlights:** All-in-one screen display, Year, month, week, day, hour, minute, second, Switchable theme colors (dark, light, green, blue), Disables device sleep mode, Acts as a desk clock

**Features:** macOS Compatibility

**In-app purchases:** none


### Mon Service

[App page](https://appshunter.io/ios/app/mon-service/id6446750723)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Clock free?

Calendar Clock costs $0.99, with no in-app purchases.

### Is Mon Service free?

Mon Service is free to download, with no in-app purchases.

### Do Calendar Clock or Mon Service have ads?

Neither Calendar Clock nor Mon Service shows ads.

### Which is updated more often, Calendar Clock or Mon Service?

Calendar Clock ships an update every 41 months, and Mon Service every 8 days. Most recently, Calendar Clock was updated on October 15, 2026 and Mon Service on October 10, 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.*