Comparison

World Clock Pro vs Overlap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

World Clock Pro

Easily track and convert time across multiple global time zones. Schedule events, share accurate times instantly, and access a vast database of cities and time zones. Ideal for international communication and planning.

Highlights
  • Universal clock access
  • Effortless time conversion
  • Schedule calendar events
  • Instant time sharing
  • Large city and timezone database
  • Automatic timezone updates
Features
Read full description

TIMEZONE CALCULATOR – YOUR ULTIMATE WORLD TIME COMPANION Master global time with a tool that is clear, concise, and built for busy international lives. Whether you’re scheduling business meetings or connecting with friends overseas, World Clock Pro keeps you in sync—simply and directly. ESSENTIAL FEATURES UNIVERSAL CLOCK ACCESS: View accurate times in cities around the world—New York, London, Tokyo, Sydney. No fuss, just the facts. EFFORTLESS TIME CONVERSION: Swipe to convert and compare time zones with precision. Plan your calls and meetings with ease. SCHEDULE WITH CONFIDENCE: Create and integrate calendar events quickly. Organize trips, group activities, and international calls without confusion. INSTANT TIME SHARING: Share exact times via email, SMS, social media, or messengers. Coordination is just a click away. HUGE CITY & TIMEZONE DATABASE: Access over 160,000 cities and popular time zones like GMT, UTC, EST, and PST at your fingertips. WHY THIS APP MATTERS Say goodbye to timezone confusion. This isn’t just another world clock—it’s a powerful tool for global thinkers, frequent travelers, and anyone who values clear, reliable time data. Streamline your schedule and manage your day without delay. EXTEND YOUR EXPERIENCE For a deeper dive into global time management, World Clock Pro is also available on Mac. Just search “World Clock Pro” in the Mac AppStore * * * World Clock Pro offers a premium subscription: Subscribe to get access to unlimited timezones, and timely automatic updates of our timezone database of more than 160,000 locations and timezones. – Length of subscription: 1 month or 1 year – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable – Terms & Conditions: https://timemaster.s3.amazonaws.com/Time-master-terms.pdf – Privacy Policy: https://timemaster.s3.amazonaws.com/Time-master-privacy-policy.pdf

About

Overlap

Easily find optimal meeting times across different time zones with a visual graph. Set custom availability for each location and sync with your calendar to avoid scheduling conflicts. Share convenient times directly from the app.

Highlights
  • Visual Overlap Graph for meeting times
  • Customizable availability hours per time zone
  • Calendar event integration
  • Multiple time zone display
  • Time zone renaming
  • Lock Screen Standby Mode widget
Features
Read full description

Find the perfect time to catchup across multiple time zones without the mind-bending math. Overlap is a smart world clock that helps you connect with people in different time zones. It makes it simple to see the time in multiple places at once, and its fun Overlap Graph is a unique visual way to quickly find convenient meeting times across the world. You can choose ‘available’ hours for each time zone. For example Dan in London might be available from 2pm to 5pm and Rashida in Sydney might be available from 7am to midday. Bring up the Overlap Graph and it will magically show you the most compatible times to schedule your catchup. Overlap also displays your calendar events, so you can always find a time that suits your schedule. Available on iPhone, iPad and Mac. • You can see multiple time zones in one beautiful UI • You can swipe left and right to quickly move through time. • You can customize 'availability' for each timezone - this could mean office hours for a meeting or simply when you're available for a group chat with your far-flung family -no more 'Sorry that's 3am for me!' • You can rename each time zone; for example, you might simply rename a time zone to say 'Grandma' or the name of a client you work with. Or perhaps your Grandma is your client, no judgement here. • You can hide time zones that you don’t need right now so it’s always easy to focus on what you need to know. • You can show your calendar events so you can always choose a time that fits your schedule. • Once you’ve chosen a great time its easy to share it via your favorite messaging app or create a calendar event. • Standby Mode is a Lock Screen feature that activates automatically when your iPhone is charging in landscape mode. The Overlap widget fully supports this mode!

Screenshots

World Clock Pro4 screens
Overlap4 screens

Verdict

The call

The clearest difference is in-app purchases: Overlap at none against World Clock Pro's 6. Overlap also leads on device support (4 vs 2). World Clock Pro's advantage is review sentiment (77% vs 67%) and iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. World Clock Pro sells 5 in-app purchases, starting at $1.99 per month. Overlap asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for World Clock Pro against 4.8 for Overlap. Both are backed by a comparable volume of ratings — 1.3K and 849 respectively. Written reviews are what separate them: 77% of World Clock Pro's written reviews are positive against 67% of Overlap's.

UpkeepUpdate frequency

World Clock Pro ships an update every 2 months, Overlap every 3 months. The most recent releases landed on September 3, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
World Clock Pro versus Overlap: the parameters behind the verdict, then further details
ParameterWorld Clock ProOverlap
PriceFreeFree
Rating4.8 (1.3K ratings)4.8 (849 ratings)
Positive reviews76.7% of reviews — better67.2% of reviews
Number of ratings1.3K — better849
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size41 MB71 MB
Age rating4+4+
DeveloperAlex Komarov Inc.Bonobo

Customer experience

World Clock Pro

All ratings1,349 ratings
Positive95.3%
Neutral1.9%
Negative2.8%
Written reviews206 reviews
Positive76.7%
Neutral4.9%
Negative18.4%

Overlap

All ratings849 ratings
Positive95.5%
Neutral2.4%
Negative2.1%
Written reviews247 reviews
Positive67.2%
Neutral11.3%
Negative21.5%

User reviews

World Clock Pro

From 1.3K App Store ratings

What we love

  • 🚀 Elegant and intuitive interface
  • 🔍 Excellent visualization of multiple time zones
  • ⏱ Seamless time shifting
  • 🌍 Convenient for international teams and travelers
  • 📆 Helpful for scheduling across time zones

Room to improve

  • 🐛 Widget issues and lack of functionality
  • 🖥 Lack of iPad and landscape mode support
  • 🔧 Concerns about app updates and feature removals
  • 💰 Complaints about subscription model and pricing

Overlap

From 849 App Store ratings

What we love

  • 💡 Elegant and intuitive interface
  • 🚀 Helpful for coordinating meetings across time zones
  • 👍 Useful for tracking time differences globally
  • 👍 Simple and easy to use
  • 👍 Beautiful and sleek design

Room to improve

  • 🐛 Widget not working
  • 🐛 Timezone data not always accurate
  • 🐛 Duplicate timezone entries
  • 🐛 App crashes and freezes
  • 🔋 High CPU usage on Mac

Bugs and requests

World Clock Pro

Reported bugs

3 issues
  • Widget not working on iOS 14 and newer
  • Issues with local time zone detection and display
  • Inconsistent behavior after app updates

Requested features

4 requests
  • Add date function for future time zone changes
  • Ability to customize and sort displayed time zones
  • Implement an Apple Watch app
  • Improve widget functionality and customization

Overlap

Reported bugs

4 issues
  • Timezone data not updating correctly
  • Inability to delete unwanted timezones
  • Inconsistent behavior across platforms
  • Typing issues on Mac version

Requested features

5 requests
  • Add option to reorder timezones
  • Implement 24-hour clock display
  • Allow customization of colors and backgrounds
  • Integrate with calendar for scheduling
  • Add weather information for each timezone

In-app purchases

5 purchases

World Clock Pro

Subscriptions5
  • 1 month$1.991 Month
  • 1 month2 variants$2.991 Month
  • 1 year3 Days trial$9.991 Year
Show 2 more
  • 1 year3 Days trial$11.991 Year
  • 1 year3 Days trial$19.991 Year
None

Overlap

No in-app purchases

Questions

Is World Clock Pro free?
World Clock Pro is free to download, with in-app purchases available.
Is Overlap free?
Overlap is free to download, with no in-app purchases.
Which has better reviews, World Clock Pro or Overlap?
World Clock Pro and Overlap are both rated 4.8 out of 5 on the App Store, from 1.3K and 849 ratings respectively.
Do World Clock Pro or Overlap have ads?
Neither World Clock Pro nor Overlap shows ads.
Which is updated more often, World Clock Pro or Overlap?
World Clock Pro ships an update every 2 months, and Overlap every 3 months. Most recently, World Clock Pro was updated on September 3, 2026 and Overlap on September 22, 2026.

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