Comparison

第二種冷凍機械責任者 | 2026年対策問題 vs Denken 3rd Class

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

Head to head
About

第二種冷凍機械責任者 | 2026年対策問題

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.

Highlights
  • 800 original practice questions
  • Detailed explanations for answers
  • Topic-based learning
  • Randomized question order
  • Review incorrect answers
  • Offline access
Features
Read full description

「第二種冷凍機械責任者、これ一つで」 第二種冷凍機械責任者の対策に必要な知識をオリジナル800問で学べる買い切り型の学習アプリです。 学ぶ人がつまずきやすい論点を分野別に整理。 問題を解くだけでなく、正解・不正解それぞれの理由を確認できるため、なんとなく覚えるのではなく、知識を理解しながら進められます。 収録内容: ・第二種冷凍機械責任者の最新オリジナル問題800問 ・本試験形式に合わせた出題方式 ・分野別学習 ・ランダム出題 ・間違えた問題の復習 ・お気に入り問題 ・選択肢ごとの詳しい解説 ・オフライン利用対応 ・広告なし、追加課金なし 本アプリは、第二種冷凍機械責任者の学習補助を目的とした非公式アプリです。

About

Denken 3rd Class

Features
Read full description

Everything you need for the Japanese Class-3 Chief Electrical Engineer exam (電験三種), in one app. 522 original practice questions written along the official syllabus, every one with an explanation. No sign-up, no internet connection required — start studying the moment you install it. ■ Mock exams in the real format - 76 items across all four subjects (Theory 20, Power 20, Machines 20, Law 16) - Pass/fail judged per subject: 60 out of 100 in each, just like the real exam - Jump to any question from the answer-sheet view, just like the real CBT - Pause and resume where you left off - 5 full rounds with no repeats ■ Per-subject results, the way the exam actually works - Denken 3rd Class is passed subject by subject, and a passed subject is exempt for two years - The result screen shows whether each subject cleared 60 points, so you know what is left - A high total does not hide a subject below 60 — the app says that subject failed ■ A mistake notebook that thins itself out - Wrong answers are collected automatically - Three correct answers in a row graduates a question off the list - Add your own note to any question - Filter by subject, sort by how often you missed it ■ Study by the 4 subjects and 32 sub-topics - Theory (electrostatics, DC circuits, magnetism, AC circuits, transients, electronics, measurement) - Power (hydro, thermal and nuclear generation, renewables, substations, transmission, distribution, materials) - Machines (DC, induction and synchronous machines, transformers, power electronics, drives, lighting, heating, control, information) - Law (Electricity Business Act, technical standards, their interpretation, facility management) - Short, focused sets by sub-topic, with the answer and explanation right after each tap ■ Statistics that show your weak spots - Accuracy per subject, so weak areas surface on their own - Score trend across your mock exams - Last two weeks of study time and your daily streak - "Weak-point drill" that gathers only your lowest-accuracy questions ■ And more - Random mock: choose the range and the number of questions - Bookmarks for the ones you want to come back to - Search across question text, options and explanations - Dark mode and adjustable text size - Shuffle questions and options so you don't memorise positions - Your study records stay on the device and are never sent anywhere. - The questions are original practice questions written along the syllabus, not the actual exam papers. For official information such as schedules and applications, see the exam centre site (shiken.or.jp). - Contact: seohcz1@gmail.com

Screenshots

第二種冷凍機械責任者 | 2026年対策問題4 screens
Denken 3rd Class4 screens

Verdict

The call

The clearest difference is price: Denken 3rd Class at Free against 第二種冷凍機械責任者 | 2026年対策問題's $2.99. Denken 3rd Class also leads on update cadence (daily vs every 3 weeks) and iOS requirement (15.0 vs 17.0). 第二種冷凍機械責任者 | 2026年対策問題's advantage is ads (none vs shown). On in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Denken 3rd Class is free to download; 第二種冷凍機械責任者 | 2026年対策問題 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

第二種冷凍機械責任者 | 2026年対策問題 ships an update every 3 weeks, Denken 3rd Class daily. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 4 level
第二種冷凍機械責任者 | 2026年対策問題 versus Denken 3rd Class: the parameters behind the verdict, then further details
Parameter第二種冷凍機械責任者 | 2026年対策問題Denken 3rd Class
Price$2.99Free — better
Positive reviews0.0% of reviews—
Update frequencyEvery 3 weeksDaily — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size6 MB65 MB
Age rating4+4+
DeveloperMasaki Kobayashihyuncheol seo

In-app purchases

None

第二種冷凍機械責任者 | 2026年対策問題

No in-app purchases

None

Denken 3rd Class

No in-app purchases

Questions

Is 第二種冷凍機械責任者 | 2026年対策問題 free?
第二種冷凍機械責任者 | 2026年対策問題 costs $2.99, with no in-app purchases.
Is Denken 3rd Class free?
Denken 3rd Class is free to download, with no in-app purchases.
Do 第二種冷凍機械責任者 | 2026年対策問題 or Denken 3rd Class have ads?
Denken 3rd Class shows ads; 第二種冷凍機械責任者 | 2026年対策問題 does not.
Which is updated more often, 第二種冷凍機械責任者 | 2026年対策問題 or Denken 3rd Class?
第二種冷凍機械責任者 | 2026年対策問題 ships an update every 3 weeks, and Denken 3rd Class daily. Most recently, 第二種冷凍機械責任者 | 2026年対策問題 was updated on October 25, 2026 and Denken 3rd Class on October 18, 2026.

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