Dual up down timer vs Ninja Fight Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dual up down timer
This utility app provides a straightforward heat-up and cool-down timer. It features a simple interface and visual cues, with screen flashes indicating the end of each interval.
- Heat up and cool down timer
- Simple user interface
- Screen flash alerts
- Interval timing
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With a simple user interface users can quickly setup and use a heat up and cool down styled timer. The screen flashs black at the end of the heat up portion and white at the end of the cool down portion.
Ninja Fight Clock
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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
Verdict
The clearest difference is in-app purchases: Dual up down timer at none against Ninja Fight Clock's 1. Dual up down timer also leads on ads (none vs shown) and iOS requirement (11.2 vs 14.0). Ninja Fight Clock's advantage is update cadence (every 3 weeks vs every 4 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. Ninja Fight Clock sells 1 one-off in-app purchase. Dual up down timer asks for nothing beyond the download.
Dual up down timer ships an update every 4 months, Ninja Fight Clock every 3 weeks. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.
| Parameter | Dual up down timer | Ninja Fight Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.2 — better | 14.0 |
| Further details — not scored | ||
| Size | 10 MB | 25 MB |
| Age rating | 4+ | 12+ |
| Developer | RD Concepts | Mihoko Araki |
In-app purchases
Dual up down timer
No in-app purchases
Ninja Fight Clock
- Ninja Fight Clock with no ads$2.99
Questions
Is Dual up down timer free?
Is Ninja Fight Clock free?
Do Dual up down timer or Ninja Fight Clock have ads?
Which is updated more often, Dual up down timer or Ninja Fight Clock?
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