World Sync vs Clock Stamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | World Sync | Clock Stamp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 18 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | One47 | Zhicheng Chen |
Customer experience
World Sync
Clock Stamp
In-app purchases
World Sync
No in-app purchases
Clock Stamp
No in-app purchases









