Comparison

Black Clock vs Ninja Fight Clock

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

Head to head
About

Black Clock

A straightforward analog clock application offering a clean and simple design. It displays time with classic hands on a dial, providing an uncluttered visual experience for users who prefer traditional timekeeping.

Highlights
  • Simple design
  • Clean interface
  • Analog display
  • Classic clock hands
Features
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- simple, clean, analog clock

About

Ninja Fight Clock

Features
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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.

Screenshots

Black Clock2 screens
Ninja Fight Clock3 screens

Verdict

The call

The clearest difference is price: Ninja Fight Clock at Free against Black Clock's $4.99. Ninja Fight Clock also leads on update cadence (every 3 weeks vs every 9 months). Black Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Ninja Fight Clock is free to download; Black Clock costs $4.99 up front. Ninja Fight Clock sells 1 one-off in-app purchase. Black Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Black Clock ships an update every 9 months, Ninja Fight Clock every 3 weeks. Both last shipped on October 27, 2026.

Scorecard4 real differences ยท 4 level
Black Clock versus Ninja Fight Clock: the parameters behind the verdict, then further details
ParameterBlack ClockNinja Fight Clock
Price$4.99Free โ€” better
Positive reviews57.1% of reviewsโ€”
Update frequencyEvery 9 monthsEvery 3 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
MonetizationPaidโ€”
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS13.0 โ€” better14.0
Further details โ€” not scored
Size0 MB25 MB
Age rating4+12+
DeveloperMacMediaMihoko Araki

In-app purchases

None

Black Clock

No in-app purchases

1 purchases

Ninja Fight Clock

One-time1
  • Ninja Fight Clock with no ads$2.99

Questions

Is Black Clock free?
Black Clock costs $4.99, with no in-app purchases.
Is Ninja Fight Clock free?
Ninja Fight Clock is free to download, with in-app purchases available.
Do Black Clock or Ninja Fight Clock have ads?
Ninja Fight Clock shows ads; Black Clock does not.
Which is updated more often, Black Clock or Ninja Fight Clock?
Black Clock ships an update every 9 months, and Ninja Fight Clock every 3 weeks. Most recently, Black Clock was updated on October 27, 2026 and Ninja Fight Clock on October 27, 2026.

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