Comparison

Time Zone Difference Planner vs TimeZone Expert

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

Head to head
About

Time Zone Difference Planner

Features
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PREMIUM — PURCHASE REQUIRED: All features described below are part of Pro and require a purchase: a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase. Stop doing time zone math before every call. TimezoneWorld lays your whole team on one 24-hour band, colors the hours when everyone is actually at their desk, and ranks the best meeting windows for you — so "does 9 AM my time work for Sydney?" is answered the moment you open the app. Most world clocks show you a row of times and leave the hard part to you. TimezoneWorld starts where they stop: you set each city's working hours, and its overlap engine walks the real calendar — daylight saving shifts, half-hour zones like India, even quarter-hour zones like Kathmandu — to find the hours when every city is inside its working day. Tap any hour on the band and see exactly what the clock reads in every city, and on which date. WHAT YOU GET • A 24-hour overlap band in your own local time — gold hours mean everyone is at their desk; tap one for the exact local time and day in every city • Best meeting windows ranked by length, so the longest shared stretch is always suggestion number one • Live clocks for up to 8 cities with an at-their-desk indicator, chosen from 400+ searchable time zones • Working hours per zone — set Berlin to 8–16 and Sydney to 10–18 and the overlap recalculates instantly • A daily reminder the moment your team's shared window opens, so you catch everyone while they are online • One-tap sharing that writes the proposed meeting out in every invitee's own local time and date PERFECT FOR • Remote teams spread across continents who lose the first ten minutes of every week to scheduling • Freelancers and agencies booking calls with the US, Europe, and Asia in the same week • Long-distance families and couples who want to ring while everyone is actually awake • Travelers who need home time, destination time, and the difference between them at a glance WHY NOT JUST USE A WORLD CLOCK? A world clock tells you it is 3 AM in Tokyo. It does not tell you when Tokyo, Berlin, and Chicago are all working at the same time — that is a search across 24 hours and every zone's own working day, with daylight saving moving the goalposts twice a year. TimezoneWorld runs that search for you and simply shows the answer. PRIVATE BY DEFAULT Everything is computed on your iPhone from the system's own time zone database. No account, no sign-in, no tracking — and the app works fully offline. PREMIUM (PURCHASE REQUIRED) TimezoneWorld is unlocked by a single purchase of your choice: a Weekly subscription, a Yearly subscription, or a one-time Lifetime purchase. Full access includes all 8 zone slots, the 24-hour overlap band, ranked meeting windows, per-zone working hours, the daily overlap reminder, and meeting-time sharing. Add your cities, set the working hours, and let your next "when works for you?" answer itself. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia

About

TimeZone Expert

Features
Read full description

TimeZone Expert helps you compare world times and plan across time zones with less guesswork. Choose your local city, add related cities, and instantly see the matching time around the world. Adjust one time and every city updates together, making it easier to find a good time for meetings, calls, travel planning, or staying connected with family and friends abroad. TimeZone Expert also highlights weekends, public holidays, and off-work hours, so you can avoid inconvenient times before sending an invite. Key features: • Compare multiple cities at the same time • Adjust one time and see all cities update together • Automatically detect your local city or choose it manually • Search cities, countries, and time zones • Show weekends, public holidays, and off-work hours • Add selected times to your calendar • Support for Apple Calendar, Google Calendar, and Outlook • Home Screen widgets for quick time checks • Apple Watch support for your selected cities • Custom holidays and office closures for specific cities • Built-in language support for international users TimeZone Expert is designed for remote teams, international families, frequent travelers, global students, and anyone who works or communicates across time zones.

Screenshots

Time Zone Difference Planner4 screens
TimeZone Expert3 screens

Verdict

The call

The clearest difference is update cadence: TimeZone Expert at every 5 days against Time Zone Difference Planner's every 4 months. TimeZone Expert also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Time Zone Difference Planner ships an update every 4 months, TimeZone Expert every 5 days. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Time Zone Difference Planner versus TimeZone Expert: the parameters behind the verdict, then further details
ParameterTime Zone Difference PlannerTimeZone Expert
PriceFreeFree
Update frequencyEvery 4 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.0 — better18.0
Further details — not scored
Size5 MB14 MB
Age rating4+4+
DeveloperLEAN ASIA CO., LTDPo-Han Chen

In-app purchases

None

Time Zone Difference Planner

No in-app purchases

None

TimeZone Expert

No in-app purchases

Questions

Is Time Zone Difference Planner free?
Time Zone Difference Planner is free to download, with no in-app purchases.
Is TimeZone Expert free?
TimeZone Expert is free to download, with no in-app purchases.
Do Time Zone Difference Planner or TimeZone Expert have ads?
Neither Time Zone Difference Planner nor TimeZone Expert shows ads.
Which is updated more often, Time Zone Difference Planner or TimeZone Expert?
Time Zone Difference Planner ships an update every 4 months, and TimeZone Expert every 5 days. Most recently, Time Zone Difference Planner was updated on October 22, 2026 and TimeZone Expert on October 15, 2026.

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