Comparison

World Sync vs Clock Stamp

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

Head to head
About

World Sync

Easily check and compare current or future times across multiple global locations. Coordinate meetings, travel, or connect with loved ones worldwide with a simple scroll interface. No account setup required for instant global time awareness.

Highlights
  • Compare time across unlimited cities
  • Scroll to view future times
  • Add and manage custom city lists
  • Daylight saving time insights
  • Immediate use without account setup
  • Smart location setup
Features
Read full description

World Sync is the easiest way to check and compare the time anywhere in the world, now or in the future. Whether you’re coordinating a meeting, catching up with family overseas, or booking travel, World Sync helps you see what time it will be across your selected cities—all with a simple scroll. No account. No setup. Unlimited cities. Just global time awareness made effortless. Features: • Immediate use – Launch and start syncing time immediately without creating an account. • Smart location setup – Use your current location or enter a city manually. • Scroll to the future – Drag the time ribbon forward or backward to see how local times shift across all your selected cities. • Custom city list – Add, reorder, or remove cities anytime. • Daylight saving insights – Tap the info button to see when and how time shifts due to DST. • Manual control – Switch your “current city” to simulate different scenarios. Perfect for remote teams, travelers, event planners, or anyone who needs to think globally.

About

Clock Stamp

This app displays multiple city time zones on a single, elegant clock face. It provides visual context for day, night, and weather in each location, aiding in travel planning and international communication.

Highlights
  • Multiple city time zones
  • Visual analog world clock
  • Local time difference display
  • Weather and day/night context
  • 12-hour and 24-hour modes
  • Light and dark appearance
Features
Read full description

Clock Stamp makes world time easy to read. See the time in several cities at once on one elegant dial, and check time differences, whether it's day or night, and the local weather at a glance. • Dial: every city sits on the dial, so time differences and daylight are clear at a glance • City search: search Apple Maps for cities and towns worldwide, and add as many as you like • Local Time: follows your location, or uses your phone's time zone • Weather: local weather at a glance, with backgrounds and weather effects that follow each city's time and weather • iPhone Duo: controls within reach of your thumb on both displays, and a live map of Earth showing day and night when it's open • 12/24-hour dial, Light/Dark appearance, Celsius/Fahrenheit, two text sizes • Six languages: English, 简体中文, Français, Italiano, 日本語, 한국어 • Supports VoiceOver and Reduce Motion Made for working across borders, remote meetings, planning trips, studying abroad, and keeping in touch with friends and family in other time zones.

Screenshots

World Sync4 screens
Clock Stamp4 screens

Verdict

The call

The clearest difference is update cadence: Clock Stamp at every 2 days against World Sync's fortnightly. World Sync's advantage is iOS requirement (17.6 vs 26.2). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for World Sync against 5.0 for Clock Stamp. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

World Sync ships an update fortnightly, Clock Stamp every 2 days. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 7 level
World Sync versus Clock Stamp: the parameters behind the verdict, then further details
ParameterWorld SyncClock Stamp
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS17.6 — better26.2
Further details — not scored
Size18 MB4 MB
Age rating4+4+
DeveloperOne47Zhicheng Chen

Customer experience

World Sync

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Clock Stamp

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

World Sync

No in-app purchases

None

Clock Stamp

No in-app purchases

Questions

Is World Sync free?
World Sync is free to download, with no in-app purchases.
Is Clock Stamp free?
Clock Stamp is free to download, with no in-app purchases.
Which has better reviews, World Sync or Clock Stamp?
World Sync and Clock Stamp are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do World Sync or Clock Stamp have ads?
Neither World Sync nor Clock Stamp shows ads.
Which is updated more often, World Sync or Clock Stamp?
World Sync ships an update fortnightly, and Clock Stamp every 2 days. Most recently, World Sync was updated on October 30, 2026 and Clock Stamp on October 29, 2026.

Other comparisons