DekaClock vs World Time Scrubber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DekaClock
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | DekaClock | World Time Scrubber |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Carsten Traupe | Sehj Kashyap |
In-app purchases
DekaClock
No in-app purchases
World Time Scrubber
No in-app purchases









