Comparison

World Time Clock Master vs ExplainIn

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

ExplainIn

Instantly understand official documents like letters, bills, and contracts. Get clear summaries, key actions, and deadlines in your preferred language, all processed privately on your device.

Highlights
  • Understand official documents
  • Plain language summaries
  • Actionable steps and deadlines
  • Multi-language support
  • On-device processing for privacy
  • Shareable summaries
Features
Read full description

Got an official letter you don't understand? Just snap it. ExplainIn reads letters, bills, receipts, payslips, contracts, product labels and error messages, and tells you in plain words what they mean, what you need to do and by when. In your language. Made for expats, newcomers and anyone facing paperwork in a language that isn't their own. ONE CLEAR ANSWER, RIGHT ON TOP Every result starts with the only question that matters: do I need to do something? "Pay 55,17 € by 25 October", "No action needed. It's already paid." or "This date has already passed". Then a short summary, the key points and the steps to take. IN YOUR LANGUAGE Get explanations in English, Ukrainian, Spanish, Polish, Romanian, French, German, Italian, Portuguese, Turkish, Arabic, Chinese, Hindi or Vietnamese. See the full translation of the original text with one tap. LOCAL WORDS, MADE CLEAR Tap terms like "apremio", "IVTM" or "días hábiles" to see what they really mean. DEADLINES YOU CAN SEE Upcoming deadlines appear at the top of the app. Add a due date to your Calendar in one tap. PRIVATE BY DESIGN Your documents are read, explained and translated on your device with Apple Intelligence. They are not uploaded to us or anyone else. No account, no ads, no tracking. SHARE IN ONE TAP Send a clean summary as an image or text to family, a friend or your gestor. Personal details like reference numbers are left out of the image. WORKS WITH Photos from your camera, your photo library, and PDFs or images from Files and Mail. FREE Every feature is free, with no limits and no subscription. If ExplainIn helps you, you can leave an optional tip. REQUIREMENTS ExplainIn needs Apple Intelligence: iPhone 15 Pro or newer, or iPad with M1 or newer. Apple Intelligence must be turned on, with the device set to a language it supports. ExplainIn can make mistakes. Always check dates and amounts against the original. It is not legal or professional advice.

Screenshots

World Time Clock Master4 screens
ExplainIn4 screens

Verdict

The call

The clearest difference is monetization model: ExplainIn at free against World Time Clock Master's subscription. ExplainIn also leads on review sentiment (100% vs 66%) and update cadence (daily vs fortnightly). World Time Clock Master's advantage is ratings volume (816 vs 1) and iOS requirement (17.0 vs 26.0). On price, ads, 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. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month and ExplainIn sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ExplainIn holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: World Time Clock Master has 816 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 66% of World Time Clock Master's written reviews are positive against 100% of ExplainIn's.

UpkeepUpdate frequency

World Time Clock Master ships an update fortnightly, ExplainIn daily. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard6 real differences · 4 level
World Time Clock Master versus ExplainIn: the parameters behind the verdict, then further details
ParameterWorld Time Clock MasterExplainIn
PriceFreeFree
Rating4.6 (816 ratings)5.0 (1 ratings) — better
Positive reviews65.8% of reviews100.0% of reviews — better
Number of ratings816 — better1
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, Vision Pro — betteriPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size236 MB6 MB
Age rating4+4+
DeveloperAlex Komarov Inc.Digitaleria SL

Customer experience

World Time Clock Master

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

ExplainIn

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

ExplainIn

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
3 purchases

ExplainIn

One-time3
  • Buy me a Coffee$0.99
  • Treat me to Lunch$2.99
  • Send a Big Thanks$4.99

Questions

Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Is ExplainIn free?
ExplainIn is free to download, with in-app purchases available.
Which has better reviews, World Time Clock Master or ExplainIn?
ExplainIn is rated higher. World Time Clock Master averages 4.6 out of 5 from 816 ratings, while ExplainIn averages 5.0 from 1 ratings.
Do World Time Clock Master or ExplainIn have ads?
Neither World Time Clock Master nor ExplainIn shows ads.
Which is updated more often, World Time Clock Master or ExplainIn?
World Time Clock Master ships an update fortnightly, and ExplainIn daily. Most recently, World Time Clock Master was updated on October 17, 2026 and ExplainIn on October 5, 2026.

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