# World Time Clock vs CheckTimeYo

The clearest difference is in-app purchases: CheckTimeYo at none against World Time Clock's 1. CheckTimeYo also leads on ads (none vs shown). World Time Clock's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. World Time Clock sells 1 one-off in-app purchase. CheckTimeYo asks for nothing beyond the download.

World Time Clock ships an update every 2 weeks, CheckTimeYo every 6 weeks. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | World Time Clock | CheckTimeYo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/world-time-clock-weather-and-map/id6469668390/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 12 MB |
| Requires iOS | **16.1** | 17.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hajime Suzuki](https://appshunter.io/developer/1615906018) | [Masayoshi Ueda](https://appshunter.io/developer/1688525453) |

## What reviewers say

### World Time Clock

[App page](https://appshunter.io/ios/app/world-time-clock-weather-and-map/id6469668390)

This app helps you track time differences across multiple cities, with real-time sunrise and sunset notifications. It's useful for business by monitoring stock market hours and partner work times, offering a visual representation of day and night cycles globally.

**Highlights:** Real-time sunrise and sunset notifications, Business hour tracking for stock markets and partners, Calculates time differences with home city as standard, Visual day/night line with seasonal changes, Weather, temperature, and humidity display, Covers approximately 600 major cities

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent purchase | $7.99 | one-time |


### CheckTimeYo

[App page](https://appshunter.io/ios/app/checktimeyo/id6504262821)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Time Clock free?

World Time Clock is free to download, with in-app purchases available.

### Is CheckTimeYo free?

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

### Do World Time Clock or CheckTimeYo have ads?

World Time Clock shows ads; CheckTimeYo does not.

### Which is updated more often, World Time Clock or CheckTimeYo?

World Time Clock ships an update every 2 weeks, and CheckTimeYo every 6 weeks. Most recently, World Time Clock was updated on September 20, 2026 and CheckTimeYo on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*