# Dozen Clock vs Wadokei57 Astronomical clock

The clearest difference is update cadence: Dozen Clock at every 2 days against Wadokei57 Astronomical clock's every 5 days. Dozen Clock also leads on price ($1.99 vs $3.99) and device support (5 vs 3). On ads, in-app purchases and iOS requirement there is nothing between them.

Dozen Clock costs $1.99 and Wadokei57 Astronomical clock $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dozen Clock ships an update every 2 days, Wadokei57 Astronomical clock every 5 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | Dozen Clock | Wadokei57 Astronomical clock |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | — | Paid |
| Size | 2 MB | 4 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Gergo Blasko](https://appshunter.io/developer/1767828070) | [Shinichi Sekiguchi](https://appshunter.io/developer/1509262945) |

## What reviewers say

### Dozen Clock

[App page](https://appshunter.io/ios/app/dozen-clock/id6733246889)

**Features:** Apple Watch app

**In-app purchases:** none


### Wadokei57 Astronomical clock

[App page](https://appshunter.io/ios/app/wadokei57-astronomical-clock/id6748839654)

This app combines a traditional Japanese clock based on sunrise and sunset with a miniature planetarium. It displays celestial movements, moon phases, and seasonal changes, all optimized for Apple Watch.

**Highlights:** Traditional Japanese time system, Miniature planetarium with star simulation, Moon phase and seasonal displays, Complications for Moon, Sun, Venus, Time navigation via crown rotation, Offline operation

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Dozen Clock free?

Dozen Clock costs $1.99, with no in-app purchases.

### Is Wadokei57 Astronomical clock free?

Wadokei57 Astronomical clock costs $3.99, with no in-app purchases.

### Do Dozen Clock or Wadokei57 Astronomical clock have ads?

Neither Dozen Clock nor Wadokei57 Astronomical clock shows ads.

### Which is updated more often, Dozen Clock or Wadokei57 Astronomical clock?

Dozen Clock ships an update every 2 days, and Wadokei57 Astronomical clock every 5 days. Most recently, Dozen Clock was updated on October 8, 2026 and Wadokei57 Astronomical clock on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*