# World Clock vs Time Zones by Jared Sinclair

The clearest difference is in-app purchases: Time Zones by Jared Sinclair at none against World Clock's 1. Time Zones by Jared Sinclair also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). World Clock's advantage is review sentiment (77% vs 44%) and update cadence (every 6 weeks vs every 4 months). On price, rating, ratings volume and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.9 for World Clock against 3.8 for Time Zones by Jared Sinclair. Both are backed by a comparable volume of ratings — 14 and 17 respectively. Written reviews are what separate them: 77% of World Clock's written reviews are positive against 44% of Time Zones by Jared Sinclair's.

World Clock ships an update every 6 weeks, Time Zones by Jared Sinclair every 4 months. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | World Clock | Time Zones by Jared Sinclair |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (14 ratings)](https://appshunter.io/ios/app/world-clock-time-converter/id622366157/reviews)** | [3.8 (17 ratings)](https://appshunter.io/ios/app/time-zones-by-jared-sinclair/id903733729/reviews) |
| Number of ratings | 14 | **17** |
| Positive reviews | **77.4% of reviews** | 44.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 22 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Fukui](https://appshunter.io/developer/575924491) | [Nice Boy LLC](https://appshunter.io/developer/754143887) |

## 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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisement | $1.99 | one-time |


### Time Zones by Jared Sinclair

[App page](https://appshunter.io/ios/app/time-zones-by-jared-sinclair/id903733729)

Easily find and compare time zones worldwide. Search for cities, rename important locations, and quickly check future dates and times. The app features a beautiful, dynamic interface and a convenient notification widget.

**Highlights:** Search time zones by city, Rename saved locations, Quick Check future dates/times, Send dates to calendar, Dynamic color interface, Notification widget

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

**In-app purchases:** none


## Frequently asked questions

### Is World Clock free?

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

### Is Time Zones by Jared Sinclair free?

Time Zones by Jared Sinclair is free to download, with no in-app purchases.

### Which has better reviews, World Clock or Time Zones by Jared Sinclair?

World Clock is rated higher. World Clock averages 3.9 out of 5 from 14 ratings, while Time Zones by Jared Sinclair averages 3.8 from 17 ratings.

### Do World Clock or Time Zones by Jared Sinclair have ads?

World Clock shows ads; Time Zones by Jared Sinclair does not.

### Which is updated more often, World Clock or Time Zones by Jared Sinclair?

World Clock ships an update every 6 weeks, and Time Zones by Jared Sinclair every 4 months. Most recently, World Clock was updated on October 26, 2026 and Time Zones by Jared Sinclair on October 21, 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.*