Comparison

DekaClock vs World Time Scrubber

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

Head to head
About

DekaClock

Features
Read full description

Did you ever notice, the time of the day is based on odd numbers? So, a day is split into 24 hours, an hour is split into 60 minutes and a minute is split into 60 seconds. Strange, isn't it? Since in many cultures nowadays our numbering system is based on the base of 10, the usual time structure as stated above, leads to some strange counting artefacts. DekaClock attempts to solve this by introducing a time-system strictly based on the base 10. The different tiers required will not be named hour, minute, etc. to avoid confusion, but rather "deka-1, "deka-2", ..., at least until a better naming comes up. "Deka" is the greek name for 10, so the name is very suitable. Since the duration of a second is a very tangible and the shortest time-period in the traditional time scheme, the DekaClock needs to come up with something similar. A traditional day has 24 * 60 * 60 = 86,400 seconds. So, the DekaClock day has 100,000 deka-5 periods, since ist has to be a number by an integer power of 10. Naturally by this, the DekaClock scheme has 5 tiers to give an accurate time of the day: deka-1, deka-2, deka-3, deka-4 and deka-5. A deka-5 period therefore is slightly shorter than a second, concretely 0.864 seconds. But this is close enough to "feel" the ticking of the clock correctly, as the passing of time in DekaClock shows. To give the full time of the day, consequently 5 single digit numbers from 0 to 9 are required. They are given separated by a colon each. For example midday is 5:0:0:0:0, 6am is 2:5:0:0:0 and 6pm is 7:5:0:0:0. So, a deka-1 period of time is a tenth of a full day of 24 hours, thus encompasses 2 hours and 24 minutes. The time of day "9 deka-1" as example refers to 9:36pm on our standard clock. A good time to go to bed.

About

World Time Scrubber

Easily compare local times across multiple cities by dragging a timeline. This private utility helps plan calls and check arrival times without complex timezone calculations. It offers a clean interface and offline functionality.

Highlights
  • Drag time across cities
  • Compare local times
  • Plan calls and arrival times
  • Home Screen widgets
  • Flight Mode for arrival estimation
  • Offline functionality
  • Light, dark, or system appearance
Features
Read full description

Drag time across cities instead of doing timezone math. World Time Scrubber helps you compare local times, plan calls, and check arrival times in one private iPhone utility. Keep the cities you care about on your Home Screen, scrub the hour to see every city update together, and use Flight Mode to understand arrival time before you land. Add extra cities from search, choose light, dark, or system appearance, and keep using saved cities without accounts, tracking, or a network connection.

Screenshots

DekaClock4 screens
World Time Scrubber4 screens

Verdict

The call

The clearest difference is update cadence: World Time Scrubber at every 2 days against DekaClock's every 2 months. World Time Scrubber also leads on ratings volume (5 vs 1). On price, rating, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for DekaClock against 5.0 for World Time Scrubber. That said, the two scores are not equally well evidenced: World Time Scrubber has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

DekaClock ships an update every 2 months, World Time Scrubber every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 8 level
DekaClock versus World Time Scrubber: the parameters behind the verdict, then further details
ParameterDekaClockWorld Time Scrubber
PriceFreeFree
Rating5.0 (1 ratings)5.0 (5 ratings)
Positive reviews—100.0% of reviews
Number of ratings15 — better
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperCarsten TraupeSehj Kashyap

In-app purchases

None

DekaClock

No in-app purchases

None

World Time Scrubber

No in-app purchases

Questions

Is DekaClock free?
DekaClock is free to download, with no in-app purchases.
Is World Time Scrubber free?
World Time Scrubber is free to download, with no in-app purchases.
Which has better reviews, DekaClock or World Time Scrubber?
DekaClock and World Time Scrubber are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.
Do DekaClock or World Time Scrubber have ads?
Neither DekaClock nor World Time Scrubber shows ads.
Which is updated more often, DekaClock or World Time Scrubber?
DekaClock ships an update every 2 months, and World Time Scrubber every 2 days. Most recently, DekaClock was updated on October 24, 2026 and World Time Scrubber on October 19, 2026.

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