Comparison

Overlap vs World Time Map

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

Head to head
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!

About

World Time Map

Features
Read full description

Compare world times fast, check local time abroad, and avoid DST or date-change mistakes with a clear world clock built for travel, overseas contact, and everyday international use. Best for - Checking local time before travel, messages, or calls - Comparing cities and dates at a glance - Finding the right contact window for friends, family, and global teams What you can do - Add cities and compare live local times in one list - See time differences from your base city at a glance - Set a reference date and time to preview local time anywhere - Reorder and remove cities to keep your list focused Why people use it - Faster than searching each city one by one - Easier to avoid DST and date-shift mistakes - Simple enough for daily use without extra setup Download WorldTimeMap to compare city times clearly and stay in sync across time zones.

Screenshots

Overlap4 screens
World Time Map4 screens

Verdict

The call

The clearest difference is ads: Overlap at none against World Time Map's shown. Overlap also leads on device support (4 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Overlap ships an update every 3 months, World Time Map every 2 months. The most recent releases landed on October 19, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
Overlap versus World Time Map: the parameters behind the verdict, then further details
ParameterOverlapWorld Time Map
PriceFreeFree
Rating4.8 (849 ratings) — better—
Positive reviews67.3% of reviews—
Number of ratings849 — better—
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size71 MB63 MB
Age rating4+4+
DeveloperBonoboYOSHIKI OSHIMA

Bugs and requests

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

World Time Map

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Overlap

No in-app purchases

None

World Time Map

No in-app purchases

Questions

Is Overlap free?
Overlap is free to download, with no in-app purchases.
Is World Time Map free?
World Time Map is free to download, with no in-app purchases.
Do Overlap or World Time Map have ads?
World Time Map shows ads; Overlap does not.
Which is updated more often, Overlap or World Time Map?
Overlap ships an update every 3 months, and World Time Map every 2 months. Most recently, Overlap was updated on October 19, 2026 and World Time Map on October 1, 2026.

Other comparisons