Comparison

Daimyo Clock vs CBT Synagogue

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

Head to head
About

Daimyo Clock

Experience traditional Japanese timekeeping with this app, which recreates a 17th-century mechanical clock. It accurately displays time divided into six equal periods for day and night, adjusting for seasonal changes in daylight.

Highlights
  • Traditional Japanese timekeeping
  • Day/night divided into six equal periods
  • Seasonal daylight adjustments
  • Accurate solar noon calculation
  • Location-based time display
  • Twilight start/end calculation
Read full description

Daimyo clock is a recreation of a mechanical clock developed in the seventeen century based on western clocks but modified to show traditional Japanese time. Traditional Japanese time divides the day and night into six equal periods from dawn to dusk and dusk to dawn respectively. Over the course of a year as the daylight and nighttime periods lengthen and shorten, the length of these six day or night periods change. Unlike Western clocks which are regulated by a single pendulum and run at a constant speed day or night, Japanese clocks incorporated two pendulums, and switched between them at dawn and dusk. Adjustment for the changing daylight and nighttime hours was accomplished by adjusting the effective length of the pendulums, normally done every two weeks, or twenty-six times a year. This kept the time shown on the clock reasonably close to the correct time, provided that the clock had been set correctly initially. This modern implementation is much more accurate and precise than the original clocks. In this implementation, the biweekly adjustments of the mechanical clock are made continuously, thus the day or night period length are always correct. Noon on the clock will, if location services are enabled, occur when the sun is at the zenith, or solar noon. Day start and end correspond to the beginning or end of twilight, and are calculated accounting for the refraction of the Earth's atmosphere. There are three situations where the clock my not show the local time in the Japanese manner: 1. If location services are off, Daimyo Clock will show the time for Tokyo, Japan. 東京 will be displayed on the clock face in this case. 2. While the application is obtaining an updated location after launch or returning to foreground. 3. Near the North or South poles the sun may either be above the horizon or below it for the entire day (24 hour period). In this case, the Japanese definition of time no longer applies, so the clock face will be shown without a clock hand.

About

CBT Synagogue

This app connects individuals to a modern, Reform Jewish congregation. It offers diverse paths to experience Judaism, including worship, social justice programs, and learning opportunities for all ages. The community is open, warm, and inclusive.

Highlights
  • Energizing worship services
  • Creative prayer and music
  • Social justice programming
  • Learning opportunities for all ages
  • Lifelong learning programs
  • Community connections
Read full description

We are a vibrant, modern, Reform Jewish congregation offering our diverse congregants multiple paths to experience Judaism, including energizing worship with creative, meaningful prayer and music; robust social justice programming; learning opportunities for all ages; and deep personal and community connections. We also offer Lifelong Learning, our nationally-accredited Weiner Religious School as well as adult education and social justice programming. Many of our congregant families have been with Beth Torah since we were founded in 1988. We welcome all who are interested in an open, warm, inclusive Reform Jewish community to join us.

Screenshots

Daimyo Clock2 screens
CBT Synagogue3 screens

Verdict

The call

The clearest difference is update cadence: CBT Synagogue at every 2 months against Daimyo Clock's every 37 months. CBT Synagogue also leads on iOS requirement (13.4 vs 16.0). On price, rating, review sentiment and ratings volume 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 — 4.0 for Daimyo Clock against 4.0 for CBT Synagogue. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Daimyo Clock ships an update every 37 months, CBT Synagogue every 2 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Daimyo Clock versus CBT Synagogue: the parameters behind the verdict, then further details
ParameterDaimyo ClockCBT Synagogue
PriceFreeFree
Rating4.0 (1 ratings)4.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 37 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.013.4 — better
Further details — not scored
Size1 MB48 MB
Age rating4+4+
DeveloperDouglas HildumCongregation Beth Torah, Inc. (KS)

Customer experience

Daimyo Clock

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

CBT Synagogue

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

In-app purchases

None

Daimyo Clock

No in-app purchases

None

CBT Synagogue

No in-app purchases

Questions

Is Daimyo Clock free?
Daimyo Clock is free to download, with no in-app purchases.
Is CBT Synagogue free?
CBT Synagogue is free to download, with no in-app purchases.
Which has better reviews, Daimyo Clock or CBT Synagogue?
Daimyo Clock and CBT Synagogue are both rated 4.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Daimyo Clock or CBT Synagogue have ads?
Neither Daimyo Clock nor CBT Synagogue shows ads.
Which is updated more often, Daimyo Clock or CBT Synagogue?
Daimyo Clock ships an update every 37 months, and CBT Synagogue every 2 months. Most recently, Daimyo Clock was updated on October 4, 2026 and CBT Synagogue on October 8, 2026.

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