# Calendar Clock vs iSimpleStopWatch

The clearest difference is price: iSimpleStopWatch at Free against Calendar Clock's $0.99. iSimpleStopWatch also leads on update cadence (every 3 months vs every 41 months) and iOS requirement (12.0 vs 26.5). Calendar Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

iSimpleStopWatch is free to download; Calendar Clock costs $0.99 up front. iSimpleStopWatch sells 1 one-off in-app purchase. Calendar Clock asks for nothing beyond the download.

Calendar Clock ships an update every 41 months, iSimpleStopWatch every 3 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Calendar Clock | iSimpleStopWatch |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 41 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 4 MB | 47 MB |
| Requires iOS | 26.5 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Systemiko Inc.](https://appshunter.io/developer/680630947) | [BeWise s.r.o.](https://appshunter.io/developer/1166472031) |

## 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


### iSimpleStopWatch

[App page](https://appshunter.io/ios/app/isimplestopwatch/id6446799571)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


## Frequently asked questions

### Is Calendar Clock free?

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

### Is iSimpleStopWatch free?

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

### Do Calendar Clock or iSimpleStopWatch have ads?

iSimpleStopWatch shows ads; Calendar Clock does not.

### Which is updated more often, Calendar Clock or iSimpleStopWatch?

Calendar Clock ships an update every 41 months, and iSimpleStopWatch every 3 months. Most recently, Calendar Clock was updated on September 10, 2026 and iSimpleStopWatch on September 18, 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.*