World Clock vs Time Zones by Jared Sinclair
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
World Clock
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.
- 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
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"World Clock" is the best app to calculate time differences all over the world. All cities' times change automatically just by scrolling it with your finger. Therefore, you don't need to add or subtract times any more to calculate time differences. ■■Features■■ -Scrolling the time bar on the side of the screen up and down simultaneously changes the time in each city to the future or past. -Double-tap the time bar to change the time unit between 1 minute and 1 hour. -You can add any city from the list of cities provided in the app. -Tap each city to specify the date and time directly. -Press and hold on a city to change the city and edit the custom name. -Only one fixed city can be displayed at the top of the screen. ■■Examples of use■■ -International meeting planner -International call -Trip planning Disclaimer:This application has been built with extreme care and attention. However, it does not guarantee the accuracy of the names and times of the cities displayed. Please note that we are not liable whatsoever for any profit loss, or any other form of loss experienced by the customer from using this application. ※We don't have any time difference data in our app. We have been inquiring about time differences of each city to iOS. Therefore, “World Clock” shows you the time of iOS. As a result, depending on the version of iOS you are using, the exact time may not be displayed. If you find a time lag in our app, please confirm default "Clock" app on your iPhone. If the time in "Clock" app is the same with the time in our “World Clock”, it means that our app is running normally. ※Abbreviated name of time zone was originally researched and added. If you notice any mistakes, please contact us from the support site. ※The screenshots are specially edited not to show ads.
Time Zones by Jared Sinclair
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.
- Search time zones by city
- Rename saved locations
- Quick Check future dates/times
- Send dates to calendar
- Dynamic color interface
- Notification widget
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Fast. Powerful. Free. Time Zones is loaded with killer features: - Search for time zones in tens of thousands of cities. - Rename your most important places. “Mom & Dad” or “Main Office” can be so much more helpful than a random city name. - Use the Quick Check mode to quickly look up a future date and time anywhere in the world. Quick Check automatically converts it to the local time in all your saved locations. - Send a date and time to your calendar, right from Quick Check mode. Handy when scheduling an important meeting. - Crisp, orderly style that's designed for speed. It's easy to compare time zones quickly and get on with your life. - Beautiful interface that changes colors with the time of day: sunrise, daytime, sunset, and night time. - Notification Widget for quick access to your most important time zones without having lose an app spot on your home screen. Check it out today!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | World Clock | Time Zones by Jared Sinclair |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (14 ratings) — better | 3.8 (17 ratings) |
| Positive reviews | 77.4% of reviews — better | 44.0% of reviews |
| Number of ratings | 14 | 17 — better |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuki Fukui | Nice Boy LLC |
Customer experience
World Clock
Time Zones by Jared Sinclair
In-app purchases
World Clock
- Remove Advertisement$1.99
Time Zones by Jared Sinclair
No in-app purchases
Questions
Is World Clock free?
Is Time Zones by Jared Sinclair free?
Which has better reviews, World Clock or Time Zones by Jared Sinclair?
Do World Clock or Time Zones by Jared Sinclair have ads?
Which is updated more often, World Clock or Time Zones by Jared Sinclair?
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