Comparison

Eikata vs CyberHacker RPG

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

Head to head
About

Eikata

Master essential English sentence patterns through a structured, age-based curriculum. Interactive quizzes and daily streak tracking aid retention, mimicking how native children acquire language.

Highlights
  • Age-based pattern progression
  • Native-like acquisition order
  • Fill-in-the-blank quizzes
  • Daily streak tracking
  • Recorded English audio
  • Learn one pattern daily
Features
Read full description

Eikata helps you learn English sentence patterns in the order native children acquire them. Master 168 essential English patterns across 4 stages: - Age 6: 30 basic patterns (permissions, gratitude, wants) - Age 8: 24 conversational patterns (opinions, suggestions, experiences) - Age 12: 42 advanced patterns (persuasion, nuance, perspective) - Teen: 72 sophisticated patterns (hypotheticals, formal writing) Features: - Recorded and device English audio for every pattern - Fill-in-the-blank quizzes for retention - Daily streak tracking - Learn one pattern a day at your own pace - Pattern Output Lab: write, save, and revisit your own sentence with today's pattern The first 30 patterns (Age 6 stage) are free. Eikata Pro (one-time purchase) unlocks all 168 patterns. Pro also unlocks unlimited saved Output Lab sentences (free users can save up to three). Eikata Plus (subscription) unlocks all patterns plus AI feedback on the English sentences you write in Output Lab: a corrected sentence, a more natural alternative, and a short explanation. Yearly (with a 1-week free trial) and monthly plans are available. Purchase and Legal Information Eikata Pro is a one-time in-app purchase, not a subscription. Eikata Plus is an auto-renewable subscription. Payment is charged to your Apple ID when the purchase is confirmed (or when a free trial ends) and at each renewal. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it in Settings > Apple ID > Subscriptions. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://starcrown.co.jp/privacy

About

CyberHacker RPG

Features
Read full description

■ 物語で学ぶ、ホワイトハッカー育成RPG 西暦2387年。銀河の生命維持を支える宇宙ステーション「ARCADIA」が、ネズミ型ハッカー集団 RAT SWARM に襲われた。新米オペレーターの子ネコ「CAT-OPERATOR」は、天才ホワイトハッカーのフォックスに導かれ、技術と倫理を学びながら銀河を守る戦いに身を投じる。 ■ 「攻撃を知り、守る力に変える」 本作はゲームを通じて、実務でも使われるセキュリティの基礎から応用までを体系的に学べます。すべての演習は架空のARCADIA内サーバーを舞台にした教育目的のシミュレーションです。 ● 全20章のストーリーミッション(学校編・社会人編・プロ編)  ターミナル操作 / Linux権限 / ネットワーク / ハッシュ・暗号 / Web診断 / SQLインジェクション / XSS・CSRF / パケット解析 / TLS・AES / CTF / フォレンジック / リバースエンジニアリング ほか ● 実践ペンテスト体験シナリオ6本  偵察→侵入→権限昇格→証拠保全→倫理判断という「考える順序」を体験 ● ツール図鑑  nmap・sqlmap・hashcat・Wireshark など実在ツールを解説。各ツールに「許可された対象にのみ使う」という倫理上の注意を明記 ● 5つの問題形式  4択 / ターミナル出力読解 / コード脆弱性診断 / 順序並び替え / 倫理判断 ■ 大切にしていること 「知識は支配のためではなく、守るために。」 ホワイトハッカーの本質は、技術で人を守ること。本作はその姿勢を物語の最後まで一貫して描きます。子どもから大人まで、セキュリティの第一歩を踏み出すための一本です。 ※本アプリは教育目的のシミュレーションであり、実在するシステムへの不正アクセスを推奨・支援するものではありません。 ※本アプリは広告(Google AdMob)を含みます。

Screenshots

Eikata4 screens
CyberHacker RPG4 screens

Verdict

The call

The clearest difference is in-app purchases: CyberHacker RPG at none against Eikata's 6. CyberHacker RPG also leads on iOS requirement (12.0 vs 17.0). Eikata's advantage is ads (none vs shown) and update cadence (daily vs every 4 days). On price 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

Both are free to download. Eikata sells 6 in-app purchases, starting at $2.99 per month. CyberHacker RPG asks for nothing beyond the download.

UpkeepUpdate frequency

Eikata ships an update daily, CyberHacker RPG every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 4 level
Eikata versus CyberHacker RPG: the parameters behind the verdict, then further details
ParameterEikataCyberHacker RPG
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyDaily — betterEvery 4 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.012.0 — better
Further details — not scored
Size9 MB49 MB
Age rating4+4+
DeveloperStarcrown IncKAZUYA MATSUMOTO

In-app purchases

6 purchases

Eikata

Subscriptions2
  • Eikata Plus Monthly$2.991 Month
  • Eikata Plus Yearly7 Days trial$17.991 Year
One-time4
  • Coffee Tip$0.49
  • Cookie Tip$2.99
  • Eikata Pro$4.99
Show 1 more
  • Cake Tip$6.99
None

CyberHacker RPG

No in-app purchases

Questions

Is Eikata free?
Eikata is free to download, with in-app purchases available.
Is CyberHacker RPG free?
CyberHacker RPG is free to download, with no in-app purchases.
Do Eikata or CyberHacker RPG have ads?
CyberHacker RPG shows ads; Eikata does not.
Which is updated more often, Eikata or CyberHacker RPG?
Eikata ships an update daily, and CyberHacker RPG every 4 days. Most recently, Eikata was updated on October 24, 2026 and CyberHacker RPG on October 25, 2026.

Other comparisons