Comparison

World Time Clock Master vs Gammel

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

Head to head
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

About

Gammel

Track the ages of loved ones, including babies, pets, and anniversaries, with customizable widgets for your devices. Visualize milestones and special dates with beautiful designs and smart framing.

Highlights
  • Customizable widgets for Home Screen, Lock Screen, and Apple Watch
  • Multiple widget styles and photo display options
  • Automatic conversion of pet ages to animal years
  • Anniversary tracking with traditional naming
  • Widget Playground for previewing designs
  • iCloud sync across Apple devices
  • Birthday and anniversary notifications
Features
Read full description

Gammel is the age tracker for puppies, babies, anniversaries, and everyone else you love - with beautiful widgets for your Home Screen, Lock Screen, Apple Watch, and Mac. Puppies, dogs, cats, babies, toddlers, anniversaries - all in one place, always a glance away. BEAUTIFUL NEW WIDGETS Gammel 2.0 brings a completely redesigned widget system, built to make the people and pets you love the centrepiece of your devices. - 7 photo widget styles: Badge, Fade, Embossed, Instant, Gallery, Magazine, and the retro-CRT Terminal - 5 dashboard widget styles to show multiple ages at once - Every widget can override the app theme with one of 11 colour palettes, or pull its tint straight from the photo - Smart subject detection frames faces and pets automatically, so widgets always look their best - Available on iPhone, iPad, Apple Watch, and Mac - Home Screen, Lock Screen, and Standby FOR PET OWNERS Just got a puppy or kitten? Gammel shows their age in weeks, then months, then years - and automatically converts it to their animal age in dog or cat years. FOR PARENTS Never do sleep-deprived maths again. Gammel shows your baby's age in the most appropriate way - weeks, then months, then years - so you always know exactly how old they are. FOR ANNIVERSARIES Track how long you've been married, together, or in any relationship. Select Wedding as your anniversary type and Gammel will show you the traditional anniversary name - Paper, Silver, Gold, and more. WIDGET PLAYGROUND Not sure which style suits your photo? The new in-app Widget Playground lets you preview every style, size, and theme with your own data before you add it to your Home Screen. APPLE WATCH Filter items by type directly on your wrist, with filters that persist between sessions. A subtle sync indicator keeps you informed when iCloud is updating your data. EVERYTHING ELSE - Add children, grandchildren, friends, family, and pets - anyone whose age matters to you - Assign photos to any person, pet, or anniversary directly from Photos, Safari, or any app using the iOS Share Sheet - Get notified on birthdays and anniversaries with flexible notification scheduling - Filter your dashboard by people, pets, or events - and show or hide archived items - Group and favourite to keep your most important people front and centre - Search across names, groups, and item types to quickly find who you're looking for - Archive entries to preserve their history - Crop and personalise photos - Shortcuts support for power users - Your data syncs across iPhone, iPad, Apple Watch, and Mac via iCloud "During the first few years of my son's life I would need to know his age in weeks, then months, and I was always having to stop and think and do maths in my head. I created Gammel so I could have a widget on my phone as a quick and easy reminder." - Luke, developer of Gammel

Screenshots

World Time Clock Master4 screens
Gammel4 screens

Verdict

The call

The clearest difference is price: World Time Clock Master at Free against Gammel's $1.99. World Time Clock Master also leads on rating (4.6 vs 1.0) and ratings volume (839 vs 1). Gammel's advantage is in-app purchases (none vs 13). On ads, device support and iOS requirement 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; Gammel costs $1.99 up front. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Gammel asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

World Time Clock Master holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: World Time Clock Master has 839 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of World Time Clock Master's written reviews are positive against 50% of Gammel's.

UpkeepUpdate frequency

World Time Clock Master ships an update fortnightly, Gammel every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
World Time Clock Master versus Gammel: the parameters behind the verdict, then further details
ParameterWorld Time Clock MasterGammel
PriceFree — better$1.99
Rating4.6 (839 ratings) — better1.0 (1 ratings)
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings839 — better1
Update frequencyFortnightly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
DevicesiPhone, iPad, Vision ProiPhone, iPad, Apple Watch
Requires iOS17.0 — better18.0
Further details — not scored
Size236 MB24 MB
Age rating4+4+
DeveloperAlex Komarov Inc.Luke Johnson

Customer experience

World Time Clock Master

All ratings839 ratings
Positive90.9%
Neutral2.5%
Negative6.6%
Written reviews78 reviews
Positive66.7%
Neutral5.1%
Negative28.2%

Gammel

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

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

Gammel

Not enough reviews yet to summarise bugs or requests.

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
None

Gammel

No in-app purchases

Questions

Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Is Gammel free?
Gammel costs $1.99, with no in-app purchases.
Which has better reviews, World Time Clock Master or Gammel?
World Time Clock Master is rated higher. World Time Clock Master averages 4.6 out of 5 from 839 ratings, while Gammel averages 1.0 from 1 ratings.
Do World Time Clock Master or Gammel have ads?
Neither World Time Clock Master nor Gammel shows ads.
Which is updated more often, World Time Clock Master or Gammel?
World Time Clock Master ships an update fortnightly, and Gammel every 6 weeks. Most recently, World Time Clock Master was updated on October 27, 2026 and Gammel on October 24, 2026.

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