Comparison

光速时钟 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

光速时钟

Features
Read full description

【模拟时钟】经典表盘设计,时针、分针、秒针实时流转,支持快速跳转世界时钟与悬浮时钟。 【番茄钟】内置番茄工作法,专注与休息时长自由设置,圆形进度环直观展示剩余时间,帮你高效进入心流状态。 【秒表】毫秒级精准计时,支持多圈计次记录,复位一键完成,适合运动、学习各类场景。 【计时器】快速设置整点倒计时,支持自定义时间,一键开启悬浮倒计时窗口,随时掌握截止时间。 世界时钟 同步显示纽约、伦敦、巴黎、迪拜、印度、北京六大城市时间,跨时区沟通不再烦恼。 【悬浮时钟】支持悬浮窗显示当前时间或倒计时,可自由拖动位置,透明度与字号随心调节,多任务场景下时间一目了然。 【隐私承诺】本应用不采集、不上传任何个人信息,所有数据仅在本地处理,安全可信赖。

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

光速时钟4 screens
Clock Stamp4 screens

Verdict

The call

The clearest difference is ads: Clock Stamp at none against 光速时钟's shown. Clock Stamp also leads on update cadence (every 2 days vs every 2 months). 光速时钟's advantage is iOS requirement (17.2 vs 26.2). On price, in-app purchases 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

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

光速时钟 ships an update every 2 months, Clock Stamp every 2 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
光速时钟 versus Clock Stamp: the parameters behind the verdict, then further details
Parameter光速时钟Clock Stamp
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS17.2 — better26.2
Further details — not scored
Size17 MB4 MB
Age rating4+4+
Developer成都时光赛博科技有限公司Zhicheng Chen

In-app purchases

None

光速时钟

No in-app purchases

None

Clock Stamp

No in-app purchases

Questions

Is 光速时钟 free?
光速时钟 is free to download, with no in-app purchases.
Is Clock Stamp free?
Clock Stamp is free to download, with no in-app purchases.
Do 光速时钟 or Clock Stamp have ads?
光速时钟 shows ads; Clock Stamp does not.
Which is updated more often, 光速时钟 or Clock Stamp?
光速时钟 ships an update every 2 months, and Clock Stamp every 2 days. Most recently, 光速时钟 was updated on October 13, 2026 and Clock Stamp on October 24, 2026.

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