Comparison

E資格 問題集 vs Oracle Java SE 21 Developer

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

Head to head
About

E資格 問題集

Features
Read full description

【E資格受験者のための本格問題集アプリ】 JDLA認定のE資格(ディープラーニング実装)に特化した問題演習アプリです。 出題傾向を徹底分析した問題で、効率よく合格力を身につけましょう。 ■ 特長 ・本番形式の問題演習  実際の試験に似た問題形式に慣れることができます。 ・苦手分野の集中攻略  解答履歴から弱点を分析し、重点的に復習できます。 ・スキマ時間に最適  通勤・通学中でもサクサク学習。1問から取り組めます。 ・詳しい解説付き  正解・不正解の理由をわかりやすく解説。理解を深めながら学べます。 ■ 対象範囲 数学・統計基礎 / 機械学習 / ディープラーニング(理論・実装)/ 深層学習の応用技術 ■ こんな方に ・E資格の取得を目指している方 ・ディープラーニングの知識を体系的に整理したい方 ・隙間時間を有効活用して勉強したい方

About

Oracle Java SE 21 Developer

Features
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Prepare for Oracle Java SE 21 Developer with one connected flow from core concepts to practice, review, and mock exams. Official credential reference: Oracle Java SE 21 Developer Professional The current question bank contains 500 questions. Study in 50-question sets or focus by domain, subdomain, and difficulty. Single-select and multiple-select items are supported where applicable. Immediately after answering, check the correct-answer explanation and the reasoning for every choice so you understand both why the answer is correct and why the alternatives do not fit. Structured study and records • 50-question set learning plus domain, subdomain, and difficulty filters • Immediate grading, correct-answer explanations, and choice-by-choice rationales • Separate saved progress and resume for set, domain, and difficulty study and for mock exams • A study-history calendar with daily question and key-term activity, monthly totals, and study streaks • Review of wrong answers, repeated misses, review notes, and weak-area analysis • Timed mock exams that hide explanations until submission, allow answer changes before submission, and show results by domain • Weekly goal reminders with a configurable notification time • Light, dark, and system themes A smooth learning flow Move quickly among Home, Study, Review, Mock Exam, and Settings. Each mode keeps its own learning state, and moving to the next item after a long explanation automatically returns the new question card to the top. Basic terms and optional audio study Use the basic-term flashcards as the primary memorization tool. When useful, turn on automatic audio playback to repeat key terms while walking, resting, or preparing for sleep without continuously reading the screen. The questions in this app are current as of August 2026, and we plan to review and update every exam’s question bank at least once a year. The questions are independently authored for study and do not reproduce live exam items, dumps, leaked questions, or third-party question banks. This is an independent study app and is not affiliated with, endorsed by, or sponsored by any certification body, exam provider, or trademark owner. Exam names and trademarks belong to their respective owners.

Screenshots

E資格 問題集3 screens
Oracle Java SE 21 Developer4 screens

Verdict

The call

E資格 問題集 and Oracle Java SE 21 Developer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. E資格 問題集 sells 1 one-off in-app purchase and Oracle Java SE 21 Developer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
E資格 問題集 versus Oracle Java SE 21 Developer: the parameters behind the verdict, then further details
ParameterE資格 問題集Oracle Java SE 21 Developer
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.1
Further details — not scored
Size34 MB201 MB
Age rating4+4+
Developertakahashi masakiCHOI SEONGMIN

In-app purchases

1 purchases

E資格 問題集

One-time1
  • E-JDLA Lifetime$4.99
1 purchases

Oracle Java SE 21 Developer

One-time1
  • Lifetime Access$4.99

Questions

Is E資格 問題集 free?
E資格 問題集 is free to download, with in-app purchases available.
Is Oracle Java SE 21 Developer free?
Oracle Java SE 21 Developer is free to download, with in-app purchases available.
Do E資格 問題集 or Oracle Java SE 21 Developer have ads?
Neither E資格 問題集 nor Oracle Java SE 21 Developer shows ads.

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