OSUN2 vs Digital Japanese Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OSUN2
Read full descriptionHide full description
By connecting the device WiFi through OSUN, you can view images, take photos, and record videos
Digital Japanese Clock
Experience the Edo period's unique timekeeping with this digital clock. It simulates the indefinite time method, dividing days and nights into variable lengths. Customize sounds, displays, and backgrounds for an immersive historical experience.
- Indefinite time method simulation
- Customizable bell sounds (drums, cannons, cuckoo)
- Multiple display options (zodiac, numerals, emojis)
- Adjustable background color and font
- Optional modern sub-clock display
- Settings for time methods and display elements
Read full descriptionHide full description
A wadokei is a mechanical clock made in Japan during the Edo period. At that time, Japan used a unique time system called the "indefinite time method". It is a method of dividing the day into day and night and then dividing each into equal parts. The common people of the Edo period began their day's activities by listening to the "dawn six bells" about 30 minutes before sunrise and ended their activities by listening to the "dusk six bells" about 30 minutes after sunset. Naturally, the time of sunrise and sunset varied with the seasons, so the time of bell ringing and the length of the unit of time, ittoki, between day and night also changed greatly. But not only was this perfectly acceptable at the time, it was also an eco-friendly way of living that suited their body rhythms very well. This app is a digital representation of this indefinite time method. The hour bells can be switched not only to the sound of bells, but also to drums, cannons, cuckoo, pillar clocks, etc. The main display can be selected from zodiac signs, numerals, and emojis. You can open the settings screen by tapping twice on the main display or by tapping the settings icon. You can change the background color, font, time methods, show/hide sub-clock, etc. here. The sub-clock in the lower left corner of the screen can also display a modern clock. You can switch the display between 24 hours, 12 hours, numerals, and zodiac signs with each tap. Please use this application and experience the rhythm of life in the Edo period. Perhaps you will discover something good.
Screenshots
Verdict
The clearest difference is in-app purchases: OSUN2 at none against Digital Japanese Clock's 1. OSUN2 also leads on ads (none vs shown) and iOS requirement (9.0 vs 14.0). Digital Japanese Clock's advantage is update cadence (every 6 weeks vs every 28 months). On price and device support 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. Digital Japanese Clock sells 1 one-off in-app purchase. OSUN2 asks for nothing beyond the download.
OSUN2 ships an update every 28 months, Digital Japanese Clock every 6 weeks. The most recent releases landed on September 16, 2026 and July 29, 2026 respectively.
| Parameter | OSUN2 | Digital Japanese Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 28 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 20 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ShenZhen YOUNG WIN Technology Co., Ltd. | Mihoko Araki |
In-app purchases
OSUN2
No in-app purchases
Digital Japanese Clock
- No Ads$1.99









