One Kanji Clock vs Eternal Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Kanji Clock
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This clock displays kanji characters for your enjoyment. Kanji characters are displayed one at a time in random, and change over as time passes. The size of the characters can be changed in three levels. The length of the switching time can be adjusted. Hiragana and English can also be displayed. There are more than 700 kanji in the database. The number is small at first, but it will gradually increase. You can also choose your favorite kanji to display. You can choose from 20 different backgrounds. A time signal can be set to sound at 0 minutes. You can choose from 78 different sounds for the time signal.
Eternal Clock
A minimalist digital clock that displays the time with no distractions. It offers a clean interface with subtle visual cues like a sun, moon, or mealtime hints, all without ads, data collection, or notifications.
- Ad-free experience
- No data collection
- No push notifications
- Minimalist interface
- Subtle visual cues (sun, moon, food)
- No settings or permissions required
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A pure digital clock. Nothing more, nothing less. It does one thing perfectly: shows the time. - No ads - No data collection - No push notifications - No permissions - Not even settings Sometimes a sun, sometimes a moon. At mealtimes, a playful hint of food. Still, nothing more than time — free from risks, interruptions, or hidden fees.
Screenshots
Verdict
The clearest difference is in-app purchases: Eternal Clock at none against One Kanji Clock's 1. Eternal Clock also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price, device support and iOS requirement 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. One Kanji Clock sells 1 one-off in-app purchase. Eternal Clock asks for nothing beyond the download.
One Kanji Clock ships an update every 2 months, Eternal Clock weekly. The most recent releases landed on October 30, 2026 and October 21, 2026 respectively.
| Parameter | One Kanji Clock | Eternal Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 18 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Mihoko Araki | Daehyeon Shin |
In-app purchases
One Kanji Clock
- One Kanji Clock with no ads$2.99
Eternal Clock
No in-app purchases
Questions
Is One Kanji Clock free?
Is Eternal Clock free?
Do One Kanji Clock or Eternal Clock have ads?
Which is updated more often, One Kanji Clock or Eternal Clock?
Other comparisons
