電験三種 理論ドリル − 計算問題を無限演習 vs Denken 3rd Class
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
電験三種 理論ドリル − 計算問題を無限演習
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電験三種(第三種電気主任技術者試験)の最初の壁「理論」。その本体である計算問題に特化したドリルアプリです。 ●数値が毎回変わるから、丸暗記にならない 問題はすべてパラメトリック自動生成。同じ分野でも出題のたびに数値が変わるので、過去問のように「答えを覚えてしまって演習にならない」ことがありません。生成された問題はすべて内蔵の計算エンジンで検証済み——答えの間違いがない状態で、実質無制限に解けます。 ●公式・代入・答えの3ステップ解説 全問に解説ステップつき。間違えた瞬間に「どの公式に、何を代入して、どう答えに至るか」をその場で確認できます。誤答の選択肢は「√3を忘れる」「m−1をmにしてしまう」といった受験生の定番ミスから作ってあるので、自分のつまずきパターンにも気づけます。 ●理論の計算7分野を網羅 ・直流回路(合成抵抗・分圧分流・ブリッジ平衡) ・静電気・コンデンサ(合成容量・静電エネルギー・クーロンの法則) ・磁気・電磁力(F=BIl・誘導起電力・直線電流の磁界) ・単相交流(インピーダンス・力率・RLC直列) ・三相交流(Y・Δ・等価変換・三相電力) ・電子理論(オペアンプ増幅・トランジスタ) ・電気計測(分流器・倍率器・誤差率) ●本試験と同じ4択 イ・ロ・ハ・ニの4択で、1回10問のドリル形式。結果画面では全問の解説をまとめて見直せます。通勤・休憩のスキマ時間の反復に。 ●買い切り・広告なし・オフラインOK 無料で直流回路と静電気・コンデンサの2分野を演習できます。Pro(買い切り)で全7分野が開放されます。月額課金や広告はありません。学習機能はすべて端末内で動作し、電波のない場所でも使えます。 【ご注意】 本アプリの問題はすべてオリジナルの自動生成問題です(過去問の転載はありません)。本アプリは試験実施機関(一般財団法人 電気技術者試験センター)とは関係のない非公式アプリであり、合格を保証するものではありません。
Denken 3rd Class
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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
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Verdict
The clearest difference is ads: 電験三種 理論ドリル − 計算問題を無限演習 at none against Denken 3rd Class's shown. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
電験三種 理論ドリル − 計算問題を無限演習 ships an update every 2 days, Denken 3rd Class every 3 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | 電験三種 理論ドリル − 計算問題を無限演習 | Denken 3rd Class |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Every 3 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Moeki Kozawa | hyuncheol seo |
In-app purchases
電験三種 理論ドリル − 計算問題を無限演習
No in-app purchases
Denken 3rd Class
No in-app purchases
Questions
Is 電験三種 理論ドリル − 計算問題を無限演習 free?
Is Denken 3rd Class free?
Do 電験三種 理論ドリル − 計算問題を無限演習 or Denken 3rd Class have ads?
Which is updated more often, 電験三種 理論ドリル − 計算問題を無限演習 or Denken 3rd Class?
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