Comparison

Ninja Fight Clock vs Eternal Clock

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

Head to head
About

Ninja Fight Clock

Features
Read full description

This is a digital and analog clock application to fight the oncoming ninjas. When a ninja attacks, touch the bottom half of the screen. You can fight back with a shuriken or a sword. You can choose the interval between attacks from 10, 15, 20, 30, and 60 minutes. Since they appear at regular intervals, you may want to use them as an alarm when you feel sleepy, such as when you are studying. Each ninja uses its own unique ninjutsu. If your attack hits them several times, you can defeat them. If you tap the scrolls that sometimes appear on the screen, you can use various ninjutsu to fight back. The ninja will leave in one minute. If you defeat them all before they are gone, you will get the scroll from the beginning in the next battle. You can choose from 20 famous Japanese castles for the castle picture. You can also turn off the ninja action and enjoy it as just a clock. ***** The time text and analog clock can be moved with your finger. The picture and analog clock can be zoomed in and out with two fingers. Touch the time text to switch to setting mode. You can change the date and time to various formats by touching it in the setting mode. You can also switch between 12-hour and 24-hour displays. The screen can be rotated horizontally and vertically. By pressing buttons such as "2X" and "3X," the font size can be adjusted in steps. 20 types of backgrounds can be selected. Time signal tone can be selected from 78 different tones.

About

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.

Highlights
  • Ad-free experience
  • No data collection
  • No push notifications
  • Minimalist interface
  • Subtle visual cues (sun, moon, food)
  • No settings or permissions required
Features
Read full description

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

Ninja Fight Clock3 screens
Eternal Clock3 screens

Verdict

The call

The clearest difference is in-app purchases: Eternal Clock at none against Ninja Fight Clock's 1. Eternal Clock also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ninja Fight Clock sells 1 one-off in-app purchase. Eternal Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Ninja Fight Clock ships an update every 3 weeks, Eternal Clock weekly. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 5 level
Ninja Fight Clock versus Eternal Clock: the parameters behind the verdict, then further details
ParameterNinja Fight ClockEternal Clock
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size25 MB23 MB
Age rating12+4+
DeveloperMihoko ArakiDaehyeon Shin

In-app purchases

1 purchases

Ninja Fight Clock

One-time1
  • Ninja Fight Clock with no ads$2.99
None

Eternal Clock

No in-app purchases

Questions

Is Ninja Fight Clock free?
Ninja Fight Clock is free to download, with in-app purchases available.
Is Eternal Clock free?
Eternal Clock is free to download, with no in-app purchases.
Do Ninja Fight Clock or Eternal Clock have ads?
Ninja Fight Clock shows ads; Eternal Clock does not.
Which is updated more often, Ninja Fight Clock or Eternal Clock?
Ninja Fight Clock ships an update every 3 weeks, and Eternal Clock weekly. Most recently, Ninja Fight Clock was updated on October 27, 2026 and Eternal Clock on October 30, 2026.

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