Best Ko4Study alternatives: apps like Ko4Study - Fire Exam Japan

第二種冷凍機械責任者 | 2026年対策問題

by Masaki Kobayashi

$2.99

$3.99 | 25% OFF

This app offers 800 original practice questions for the Type 2 Refrigeration Engineer exam. It organizes content by topic, provides detailed explanations for correct and incorrect answers, and supports offline use. The app aims to help users understand concepts rather than just memorize them.

消防設備士 4類（甲4・乙4）合格ドリル｜一問一答・模擬試験

by Shunya Iwasaki

Free

This app provides comprehensive study materials for the Fire Equipment Officer Level 4 (Class A and B) exams. It offers one-on-one practice questions, practical skill drills for identification and drafting, and full-scale mock tests. Study offline and optimize your learning with personalized exam settings.