Comparison

Flip Clock Pro vs World Time Clock Master

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

Head to head
About

Flip Clock Pro

A minimalist desktop digital clock offering a variety of customization options. It displays time with seconds, includes a smart alarm, timer, stopwatch, and Pomodoro timer. The app also supports white noise and personalized signatures.

Highlights
  • Display time with seconds
  • Smart alarm clock
  • Timer and stopwatch
  • Pomodoro Technique timer
  • Multiple clock themes
  • Background white noise playback
  • Home and lock screen widgets
Features
Read full description

Flip Clock Pro is a minimalist desktop digital clock. Desktop clock widget supports displaying seconds and calendar. - Show time in seconds on Dynamic island - Full screen display time and date - 12 and 24 hour modes. - Smart alarm clock, can automatically adjust the volume. - Support multiple clock themes. - Provide timer and stopwatch, countdown. - The Pomodoro Technique helps you focus on work and study. - Support playing background white noise. - Show time seconds in Today widget. - Provide home screen and lock screen clock widget display with seconds. - Provide calendar and clock widget display. - Support to display personalized signature on the lock screen - Hourly chime, hourly voice timekeeping. - You can set the app to automatically launch when charging, as a screensaver.

About

World Time Clock Master

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

Highlights
  • Multiple time zone display
  • Interactive time conversion
  • Event scheduling
  • Atomic time accuracy
  • Dynamic home screen widgets
  • List mode for text view
  • Real moon phases and sunrise/sunset
Features
Read full description

THE EASIEST WAY TO DEAL WITH MULTIPLE TIMEZONES + INTERACTIVE WIDGETS Sick of screwing up meeting times and missing calls? This app cuts through time-zone confusion and hands you the perfect hour at a glance. Forget guesswork — just click, connect, and impress. KEY FEATURES EVENT SCHEDULING MADE EASY Found the perfect meeting time? Add events to your calendar with just a tap, and never miss an international webinar, call, or special moment again. ATOMIC ACCURACY No drift, no guesswork. Each second syncs with the atomic standard, so you can trust every moment. Extensive Time Zone Database: Tap into over 160,000 locations and time zones including GMT, UTC, and more. UNIFIED CLOCK FACE View all your essential time zones at a glance on one beautifully designed, customizable clock face. Whether you prefer digital or analog displays (or even military time), everything is exactly where you need it. INTERACTIVE TIME CONVERSION Convert times instantly by simply twisting or swiping across the clock face. Watch as your selected time zones update in real time—making planning international calls, meetings, or travel effortless. DYNAMIC WIDGETS Access global times without even opening the app. Our interactive home screen widget lets you drag a simple line to reveal and convert times, ensuring you’re always in sync no matter where you are. LIST MODE Get a clean, text-based view of all your cities in one column. See times and dates at a glance, and scroll to check future or past hours. It’s a no-fuss way to track the world’s clocks. FEELS LIKE A LUXURY TIMEPIECE We poured effort into details most people never notice — and we’re okay with that. Our users aren’t “most people.” Details include: — Real Moon Phases — Real Moon Rotation — Real Sunrise & Sunset — Advanced City Lights — Haptic Feedback * * * World Clock Master offers a premium subscription: Subscribe to get access to unlimited timezones, interactive widgets, customizations, 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

Screenshots

Flip Clock Pro4 screens
World Time Clock Master4 screens

Verdict

The call

The clearest difference is price: World Time Clock Master at Free against Flip Clock Pro's $2.99. World Time Clock Master also leads on update cadence (fortnightly vs every 2 months). Flip Clock Pro's advantage is in-app purchases (none vs 13) and review sentiment (74% vs 66%). On rating, ratings volume, ads 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

World Time Clock Master is free to download; Flip Clock Pro costs $2.99 up front. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Flip Clock Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Flip Clock Pro against 4.6 for World Time Clock Master. Both are backed by a comparable volume of ratings — 1.5K and 816 respectively. Written reviews are what separate them: 74% of Flip Clock Pro's written reviews are positive against 66% of World Time Clock Master's.

UpkeepUpdate frequency

Flip Clock Pro ships an update every 2 months, World Time Clock Master fortnightly. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard6 real differences · 4 level
Flip Clock Pro versus World Time Clock Master: the parameters behind the verdict, then further details
ParameterFlip Clock ProWorld Time Clock Master
Price$2.99Free — better
Rating4.6 (1.5K ratings)4.6 (816 ratings)
Positive reviews74.1% of reviews — better65.8% of reviews
Number of ratings1.5K — better816
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Vision Pro
Requires iOS15.0 — better17.0
Further details — not scored
Size46 MB236 MB
Age rating4+4+
Developer翠玲 施Alex Komarov Inc.

Customer experience

Flip Clock Pro

All ratings1,496 ratings
Positive91.4%
Neutral4.0%
Negative4.6%
Written reviews305 reviews
Positive74.1%
Neutral8.9%
Negative17.0%

World Time Clock Master

All ratings816 ratings
Positive90.8%
Neutral2.8%
Negative6.4%
Written reviews76 reviews
Positive65.8%
Neutral5.3%
Negative28.9%

User reviews

Flip Clock Pro

From 1.5K App Store ratings

What we love

  • 👍 Great app with lots of customization options
  • 👍 Useful features like alarm clock and vertical flip clock
  • 👍 Simple and clean interface
  • 👍 Visible from a distance
  • 👍 Nostalgic retro style

Room to improve

  • 🐛 Occasional crashes and bugs
  • 🐛 Inconsistent sound and alarm issues
  • 🐛 Seconds digit freezing up
  • 🐛 Widget not respecting app settings
  • 🔋 Brightness issues and screen burn-in concerns

World Time Clock Master

From 816 App Store ratings

What we love

  • 🚀 Delightful scheduling assistance
  • 👍 Feature improvement
  • 👍 The best Timezone helper
  • 👍 One of the best clocks around
  • 👍 The Widget is so damn cool!

Room to improve

  • 🐛 Problemas al actualizar
  • 🐛 Sticky signup interface
  • 🐛 Demo not enough
  • 🔒 NOT A FREE APP
  • 💰 Terrible monetisation model compared to previous app

Bugs and requests

Flip Clock Pro

Reported bugs

4 issues
  • Seconds digit freezing
  • Widget not showing 12-hour time format
  • Brightness issues when leaving app open
  • Inconsistent sound and alarm problems

Requested features

6 requests
  • Add more alarm sound options
  • Allow customization of alarm sound from music library
  • Implement a snooze function
  • Add ability to set multiple alarm times
  • Provide more color and font customization options
Show 1 more
  • Improve landscape mode support

World Time Clock Master

Reported bugs

4 issues
  • Lose all the registered locations after updating the app
  • Sticky signup interface
  • Widget doesn't work
  • GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

Requested features

4 requests
  • Add the time difference in hours between the default location and other locations in both the widget and the app
  • See my calendar events on the dial
  • Make a paid tier that doesn't collect my data
  • Add new event to a Calendar

In-app purchases

None

Flip Clock Pro

No in-app purchases

10 purchases

World Time Clock Master

Subscriptions6
  • 1 month3 variants$2.991 Month
  • 3 months$3.993 Months
  • 1 year1 Year trial2 variants$11.991 Year
Show 3 more
  • 1 year3 Days trial$11.991 Year
  • 1 year$11.991 Year
  • 1 year3 Days trial$19.991 Year
One-time4
  • Lifetime$29.99
  • Lifetime$49.99
  • Lifetime$79.99
Show 1 more
  • Lifetime$99.99

Questions

Is Flip Clock Pro free?
Flip Clock Pro costs $2.99, with no in-app purchases.
Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Which has better reviews, Flip Clock Pro or World Time Clock Master?
Flip Clock Pro and World Time Clock Master are both rated 4.6 out of 5 on the App Store, from 1.5K and 816 ratings respectively.
Do Flip Clock Pro or World Time Clock Master have ads?
Neither Flip Clock Pro nor World Time Clock Master shows ads.
Which is updated more often, Flip Clock Pro or World Time Clock Master?
Flip Clock Pro ships an update every 2 months, and World Time Clock Master fortnightly. Most recently, Flip Clock Pro was updated on September 30, 2026 and World Time Clock Master on September 29, 2026.

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