Comparison

国語海賊〜1年生編〜完全版 vs K

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

Head to head
About

国語海賊〜1年生編〜完全版

Master all 80 first-grade Japanese kanji through engaging pirate-themed games. Collect pirate cards and treasures as you learn, making memorization fun and effective for young learners.

Highlights
  • Learn 80 first-grade kanji
  • Engaging pirate-themed games
  • Collect pirate cards and treasures
  • Automatic progress reports
  • No difficult rules
  • Effective for struggling learners
Features
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小学1年生で覚える全80コの漢字が楽しく遊びながら学習できる!!苦手だった漢字も、ゲームとしてならあっという間に覚えてしまう。 シリーズ累計200万ダウンロード!解答数6億問を突破! 海賊見習い、ヨンデーとカイデーと一緒に数々の個性豊かな海賊達に挑み60枚の海賊カードを集めよう! 集めた頃には、小一で習う全80漢字全部をマスター。ドリルや塾も良いけれど、ゲームで気軽に学習してみませんか? 学習効果 - 反復による学習効果を高めるために、子供達が飽きないようにゲーム要素を工夫! - ステージクリア後には必ずカードがもらえる!学習結果を報酬体験で楽しいものに! - 中にはレアカードも用意!もらったら嬉しい、難しい問題にも果敢にトライ! - 特に学習が苦手なお子様には効果絶大です! 特徴 -成績表が自動的に出来上がる! -このアプリだけで小一漢字全部覚えられちゃう! -難しいルールは一切なし! -約150種類のお宝があるよ!全部集めちゃおう! ――― さらなる大海原を目指して……! 小学校1年生〜6年生の全1026漢字を収録した、シリーズ最新作『国語海賊〜小学漢字の海〜』も好評配信中!

About

K

Create and visualize 2D and 3D molecular models with intuitive drawing tools and AR capabilities. This app serves as a practical and cost-effective alternative to physical model kits for students.

Highlights
  • 2D structural formula drawing
  • 3D molecular model visualization
  • Augmented Reality (AR) viewing
  • Save and reopen models
  • Pre-built templates
  • Screenshot capture
Features
Read full description

**The Molecular Model App We Always Wanted** Born from the developer’s own learning experience, K-Mol is a molecular modeling app designed for high school and university students. ## Features ### 2D Mode ・Draw structural formulas with intuitive controls ・Supports up bonds and down bonds, making it possible to represent stereochemical structures ・Includes templates for five-membered and six-membered sugar rings, saving you from the tedious process of drawing them from scratch ### 3D Mode ・A 3D mode that feels like using a real molecular model kit ・A practical alternative to physical molecular model kits, which can be surprisingly expensive ・Recreates bond lengths and bond angles, making it useful for learning from the high school level through university-level chemistry ・viewing molecular models in AR ## Shared Features ・Screenshot: Capture the structural formulas and 3D models you create. Perfect for reports and study materials. ・Save: Save your structural formulas and 3D models inside the app and reopen them anytime. ・Templates: Frequently used structural formulas are available as templates, so you do not have to draw everything manually. ## Important Notes K-Mol is an educational app designed to help students learn about molecular structures, bonds, stereochemistry, and basic chemical visualization. It is not a substitute for textbooks, classroom instruction, laboratory safety guidance, or professional chemical analysis. The molecular structures, bond lengths, bond angles, aromatic representations, templates, and 2D/3D views shown in the app are simplified models for educational purposes. They do not fully represent actual chemical behavior, quantum effects, force-field optimization, experimentally measured structures, or other advanced chemical properties. Do not use this app for laboratory safety, medical, pharmaceutical, environmental, industrial, regulatory, research-level modeling, synthesis planning, handling of hazardous substances, or any other professional or safety-critical purpose. This app does not provide professional advice. The information displayed is intended for general educational purposes only.

Screenshots

国語海賊〜1年生編〜完全版4 screens
K2 screens

Verdict

The call

The clearest difference is review sentiment: 国語海賊〜1年生編〜完全版 at 100% against K's 0%. 国語海賊〜1年生編〜完全版 also leads on iOS requirement (11.0 vs 17.0). K's advantage is update cadence (every 2 weeks vs every 15 months) and price ($0.99 vs $4.99). On ads, in-app purchases, monetization model 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

国語海賊〜1年生編〜完全版 costs $4.99 and K $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

国語海賊〜1年生編〜完全版 ships an update every 15 months, K every 2 weeks. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 4 level
国語海賊〜1年生編〜完全版 versus K: the parameters behind the verdict, then further details
Parameter国語海賊〜1年生編〜完全版K
Price$4.99$0.99 — better
Positive reviews100.0% of reviews — better0.0% of reviews
Update frequencyEvery 15 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size582 MB4 MB
Age rating4+4+
DeveloperFantamstickMasaki Kobayashi

Customer experience

国語海賊〜1年生編〜完全版

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

K

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

国語海賊〜1年生編〜完全版

No in-app purchases

None

K

No in-app purchases

Questions

Is 国語海賊〜1年生編〜完全版 free?
国語海賊〜1年生編〜完全版 costs $4.99, with no in-app purchases.
Is K free?
K costs $0.99, with no in-app purchases.
Do 国語海賊〜1年生編〜完全版 or K have ads?
Neither 国語海賊〜1年生編〜完全版 nor K shows ads.
Which is updated more often, 国語海賊〜1年生編〜完全版 or K?
国語海賊〜1年生編〜完全版 ships an update every 15 months, and K every 2 weeks. Most recently, 国語海賊〜1年生編〜完全版 was updated on October 15, 2026 and K on October 11, 2026.

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