# World Clock vs シンプル単位変換

The clearest difference is update cadence: シンプル単位変換 at weekly against World Clock's every 6 weeks. World Clock's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

World Clock ships an update every 6 weeks, シンプル単位変換 weekly. The most recent releases landed on November 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | World Clock | シンプル単位変換 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (14 ratings)](https://appshunter.io/ios/app/world-clock-time-converter/id622366157/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 77.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Fukui](https://appshunter.io/developer/575924491) | [Searial, Inc.](https://appshunter.io/developer/1875914396) |

## What reviewers say

### World Clock

[App page](https://appshunter.io/ios/app/world-clock-time-converter/id622366157)

Easily calculate time differences worldwide by scrolling a dynamic time bar. Add any city, set specific dates and times, and plan international meetings or calls effortlessly. The app syncs with iOS time data.

**Highlights:** Dynamic time bar for instant difference calculation, Add and manage multiple cities, Direct date and time specification, Customizable city names, Syncs with iOS time data

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

**In-app purchases:** none


### シンプル単位変換

[App page](https://appshunter.io/ios/app/id6787664726)

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

**In-app purchases:** none


## Frequently asked questions

### Is World Clock free?

World Clock is free to download, with no in-app purchases.

### Is シンプル単位変換 free?

シンプル単位変換 is free to download, with no in-app purchases.

### Do World Clock or シンプル単位変換 have ads?

Both World Clock and シンプル単位変換 show ads.

### Which is updated more often, World Clock or シンプル単位変換?

World Clock ships an update every 6 weeks, and シンプル単位変換 weekly. Most recently, World Clock was updated on November 1, 2026 and シンプル単位変換 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.*