危険物乙４（おつよん）全問解説 - 分野別一問一答と過去問

Installs

96.9k

Rating

4.5

Rating count

1.3k

Category	Education
Developer	TRIPS LLC
Price	Free
First release	8/19/2021 (4 years ago)
Version	9.6.0
In-app purchases	No
Contains ads	No
Content rating	Rated for 12+
Package name	jp.co.trips.shikakukikenbutsuotsu4

View on Play Store

Core Metrics

Data Breakdown

Date	Rating Count	Average Rating	Installs	Version
6/27/2025	1,279	4.543	96,884	9.6.0
6/26/2025	1,277	4.535	96,784	9.6.0
6/25/2025	1,274	4.543	96,721	9.6.0
6/24/2025	1,273	4.563	96,671	9.6.0
6/23/2025	1,272	4.559	96,671	9.6.0
6/22/2025	1,271	4.570	96,614	9.6.0
6/21/2025	1,267	4.578	96,500	9.6.0
6/20/2025	1,265	4.579	96,371	9.6.0
6/19/2025	1,264	4.577	96,371	9.6.0
6/18/2025	1,263	4.574	96,310	9.6.0
6/17/2025	1,261	4.567	96,187	9.6.0
6/16/2025	1,259	4.576	96,187	9.6.0
6/15/2025	1,255	4.571	96,079	9.6.0
6/14/2025	1,254	4.568	95,908	9.6.0
6/13/2025	1,253	4.571	95,908	9.6.0
6/9/2025	1,246	4.548	95,678	9.6.0
6/8/2025	1,240	4.548	95,474	N/A
5/29/2025	1,237	4.565	95,382	N/A
5/28/2025	1,200	4.508	94,522	N/A
5/27/2025	1,194	4.504	94,446	N/A
5/24/2025	1,187	4.504	94,270	N/A
5/22/2025	1,177	4.475	94,128	N/A
5/21/2025	1,172	4.449	93,918	N/A
5/20/2025	1,167	4.483	93,918	N/A
5/19/2025	1,167	4.483	93,843	N/A
4/24/2025	1,110	4.393	92,267	N/A
4/22/2025	1,094	4.413	91,456	N/A
4/15/2025	1,090	4.427	91,456	N/A
4/10/2025	1,072	4.430	91,183	N/A
4/6/2025	1,052	4.410	90,654	N/A

Details

The definitive version of the app for Hazardous Materials Handler Class B Class 4 and Otsu 4 Countermeasures! There are 618 frequently asked questions ranging from basic Q&A to the actual format.
All questions have detailed explanations. There is also a function that allows you to review the checked questions at once.
Additionally, the "How to study Dangerous Goods 4" page, which explains in detail how to study Dangerous Goods 4, is a must-read. Please take advantage of it!

This app is compatible with the legal revisions as of April 2025. Please use it with confidence.
You can use all the contents of this app, ``Dangerous Goods 4 (Otsuyon) Complete Questions Explanation'', for free.
If you are concerned about displaying advertisements, we apologize for the inconvenience, but if you would like to do so, please use the "Seriously Learning Plan (Hide Ads)".

◆Terms of use
https://apps.trips.co.jp/terms_of_use.html

If you notice any problems, please feel free to contact us using the inquiry form within the app.

This app "Dangerous Goods Otsuyon 4 (Otsuyon) Complete Questions Explanation - 618 frequently asked questions ranging from the basic question and answer to the actual format" is,
This is an app from the ``Self-study TODAY'' series of qualification exam preparation apps that have a cumulative total of 10 million downloads and are reliable and proven.
A strong ally for acquiring qualifications and studying for exams. If you want to take Hazardous Materials Handler Otsu 4, install this free app now!

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