Ninja Fight Clock vs HourHack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ninja Fight Clock
Read full descriptionHide 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.
HourHack
Easily calculate the duration between two specific times or dates. Get instant results in hours, minutes, or days with a clear and intuitive interface. Simplify all your time-related calculations.
- Calculate time differences
- Calculate date differences
- Instant results
- Clear interface
- Time unit conversion
Read full descriptionHide full description
Need to know how much time has passed or how many days until an event? HourHack makes it simple to calculate the difference between two times or dates. Quickly input any two moments, and get instant results in hours, minutes, or days. Features: Calculate time differences between two times Find the amount of time between dates Clear and easy-to-use interface Simplify your time calculations with HourHack!
Screenshots
Verdict
The clearest difference is in-app purchases: HourHack at none against Ninja Fight Clock's 1. HourHack also leads on ads (none vs shown). On price, update cadence, 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. Ninja Fight Clock sells 1 one-off in-app purchase. HourHack asks for nothing beyond the download.
Ninja Fight Clock ships an update every 3 weeks, HourHack fortnightly. The most recent releases landed on September 14, 2026 and September 27, 2026 respectively.
| Parameter | Ninja Fight Clock | HourHack |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (10 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 25 MB | 21 MB |
| Age rating | 12+ | 4+ |
| Developer | Mihoko Araki | Rosenbergs LLC |
In-app purchases
Ninja Fight Clock
- Ninja Fight Clock with no ads$2.99
HourHack
No in-app purchases









