Comparison

MotiTan vs GOIKOI 英単語

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

Head to head
About

MotiTan

This app uses AI to create a fun and effective way to learn English vocabulary. It offers various game modes, including quests and real-time online battles, to help users memorize words through engaging challenges. Track your progress and compete with others to improve your English skills.

Highlights
  • AI-powered personalized learning
  • Gamified vocabulary quests
  • Real-time online battles
  • Progress tracking and visualization
  • Character collection and customization
  • Monthly rankings and rewards
  • Friend challenges and collaboration
Read full description

MotiTan is a vocabulary app for English speakers learning Japanese, Korean, Chinese (Mandarin), Spanish, French, and German. Prepare for the JLPT (N5–N1), TOPIK, HSK, AP Chinese, AP Spanish, DELE, DELF/DALF, TEF/TCF Canada, and Goethe-Zertifikat. Learn through 50-second real-time quiz battles, Adventure mode, and the new Word Army mode, and review words before you forget them. "Just one more battle." Before you know it, you know more words than you did yesterday. The joy of winning a quick match overlaps with the pure satisfaction of realizing you actually remembered the word when it mattered. ■ 50-second real-time vocabulary battles Jump into quick 50-second quiz battles against friends or other players in real time. Each match is fast and focused, making it easy to fit meaningful vocabulary practice into short breaks during your day. You can compete in the Citizen League rankings, or choose to practice comfortably without joining the league. ■ New: Word Army Open it from the banner on the Home screen. Steer your army left and right, and grow it with number gates and word questions (pick the meaning or the right picture); a wrong answer shrinks it. Dodge obstacles and defeat word enemies, each showing the word and its translation, then face the boss at the end. It uses words from the course you are studying, in any language. Choose from three difficulty levels; stages change every time you play. ■ Adventure mode with instant explanations Meet each word naturally in Adventure mode. Learn vocabulary through clear pictures, audio pronunciations, and example sentences while answering quizzes. If you make a mistake, explanations appear immediately so you can correct your understanding on the spot. You can also look up words anytime using the built-in dictionary. ■ Smart word books and custom review Keep your vocabulary organized automatically. Your word book sorts words based on how well you know them, helping you review weak or almost-forgotten terms before they slip away. You can also create your own custom word books for specific goals, and add words from a photo of a textbook or handout. Take a vocabulary level check to measure your current knowledge and select the ideal course for your level. ■ Listen on the go Turn on audio autoplay to listen to your words wherever you are. Adjust audio through 7 speed settings ranging from 0.5x to 3.0x. Background playback keeps audio running smoothly even when your screen is locked. Keep track of your consistency with learning records, complete missions, and dress up your characters. ■ Courses for English speakers Expand your vocabulary in Japanese, Korean, Chinese (Mandarin), Spanish, French, or German: - Japanese: Conversation, JLPT, Kids - Korean: Conversation, TOPIK, Kids - Chinese: Conversation, HSK, AP Chinese, Kids - Spanish: Conversation, DELE, AP Spanish, Kids - French: Conversation, DELF/DALF, TEF/TCF Canada, Kids - German: Conversation, Goethe-Zertifikat, Kids ■ Sister app integration MotiTan is made by Astran in Tokyo. You can log in with the same account across both MotiTan and our sister conversation app, MotiSpi, to build your vocabulary and conversational skills together. ■ Free to start MotiTan is free to start. Some features include paid plans and usage limits. A Family plan is also available for parents managing their family's learning experience. Terms of Use https://motitown.com/notification/document/legal-privacy/riyokiyaku Privacy Policy https://motitown.com/notification/document/legal-privacy/motitan AP is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this app.

About

GOIKOI 英単語

Learn English vocabulary in context with over 1.5 million audio-supported example sentences from movies and dramas. Improve your understanding of word nuances and build a strong vocabulary network for exams like Eiken and TOEIC.

Highlights
  • Learn vocabulary in context
  • 1.5M+ audio-supported example sentences
  • Vocabulary network for exponential growth
  • AI-powered adaptive learning plans
  • Shadowing with AI pronunciation feedback
  • Supports Eiken, TOEIC, and university exams
Features
Read full description

語彙は、文脈の中で覚えたほうが記憶に残りやすいって知ってますか?GOIKOIなら、映画やドラマから厳選した150万以上の音声付き例文で学べるので、単語のニュアンスまでしっかりイメージできます。誰でも、まるで上級者のように英単語を「文脈ごと」にラクに身につけられます。 語彙は文脈の中で提示されたほうが記憶に残りやすいことが、言語習得に関する研究でも明らかになっています(Schmitt, 2000; Nation, 2001)。 単語をひとつひとつバラバラに覚えるのは、脳の自然な記憶プロセスに反しています。 言語は単語帳の中で覚えるのではなく、意味のある形で実際に使われてこそ、真の力を発揮します。 今すぐ、革新的な英語学習を体験しましょう! ◈ 英検®、大学受験、TOEIC®にも完全対応! 英検®、大学受験、TOEIC®はもちろん、中学・高校英語の基礎学習までしっかりカバーします。 出題頻度と難易度に基づく単語集で、最短ルートでのゴールを目指しましょう! ◈ 語彙ネットワークで、「断片的な記憶」をひとつのつながりに 派生語・類義語・対義語・英米綴りなどが、まるで地図のようにつながり、語彙を指数的に向上させることができるため、効率よく、かつ深く定着させるための構造的な学習ができます。 ◈ 英語4技能の習得も視野に入れた設計 スペルチェックやAIの発音評価付きシャドーイングなど、単語の理解を実践につなげる機能が充実しています。 聞き流し・書き取りなどの高機能も、自分のスタイルに合わせて自由に使えます。 ◈ AI×アルゴリズム、次世代の記憶プラン 復習アルゴリズムは、単なる忘却曲線やSuperMemo理論にとどまらず、ユーザーの進捗に合わせた柔軟な学習プランを提供可能です。 GOIKOI では、単語の難易度・出題頻度・学習履歴など多角的なデータを組み合わせ、一人ひとりに最適化された「進化型の記憶プラン」をAIが提案します。 【こんな人におすすめ】 - TOEIC®や英検®でスコアアップを目指している - 覚えた単語を、実際の会話や文章で使えるようにしたい - 英語の映画やドラマを字幕なしで楽しめるようになりたい - ネイティブの英語を聞き取れるようになりたいし、発音ももっと自然にしたい - テクノロジーを活用して、もっと効率よく学びたい 今すぐ無料で GOIKOI を体験しよう! 初めてご利用の方は、Pro機能をすべて使える、3日間の無料体験つきです。 支払い情報の登録や解約手続きは一切不要で、体験期間が終わると自動的に無料版に切り替わるので安心してご利用いただけます。 まずはお気軽に体験してみてくださいね! *英検®は、公益財団法人日本英語検定協会の登録商標です。このアプリやサービスは、ETSおよび公益財団法人日本英語検定協会による承認や提携を受けたものではありません。 *TOEIC is a registered trademark of Educational Testing Service (ETS) in the United States and other countries. This app is not approved or endorsed by ETS. 有料プランについて - 本アプリには「月間プラン」「年間プラン」の2つの定期購読プランがあります。 - 定期購読は自動継続購読になります。購読期間終了の24時間前までに解約すれば、自動更新を停止できます。 - 解約手続きはアプリ内からはできません。「設定」アプリの「サブスクリプション」から行えます。 - アプリを削除するだけでは解約されませんのでご注意ください。 - お支払いは Apple アカウントに請求されます。 サブスクリプションの解約方法 1. 「設定」アプリを開きます。 2. 自分の名前をタップします。 3. 「サブスクリプション」をタップします。 4. 管理したいサブスクリプションをタップします。 5. 「サブスクリプションをキャンセル」をタップします。 ▶ 利用規約 https://goikoi.com/terms-of-use ▶ プライバシーポリシー https://goikoi.com/privacy-policy

Screenshots

MotiTan4 screens
GOIKOI 英単語4 screens

Verdict

The call

The clearest difference is review sentiment: GOIKOI 英単語 at 89% against MotiTan's 53%. GOIKOI 英単語 also leads on ads (none vs shown) and rating (5.0 vs 4.7). MotiTan's advantage is update cadence (every 8 days vs every 5 weeks) and ratings volume (154 vs 5). On price, 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

Both are free to download. MotiTan sells 10 in-app purchases, starting at $9.99 per month and GOIKOI 英単語 sells 2 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

GOIKOI 英単語 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: MotiTan has 154 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 53% of MotiTan's written reviews are positive against 89% of GOIKOI 英単語's.

UpkeepUpdate frequency

MotiTan ships an update every 8 days, GOIKOI 英単語 every 5 weeks. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
MotiTan versus GOIKOI 英単語: the parameters behind the verdict, then further details
ParameterMotiTanGOIKOI 英単語
PriceFreeFree
Rating4.7 (154 ratings)5.0 (5 ratings) — better
Positive reviews52.6% of reviews89.3% of reviews — better
Number of ratings154 — better5
Update frequencyEvery 8 days — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size557 MB111 MB
Age rating4+9+
DeveloperAstran Inc.OBLADI COOPERATION

Customer experience

MotiTan

All ratings154 ratings
Positive93.5%
Neutral3.2%
Negative3.2%
Written reviews57 reviews
Positive52.6%
Neutral15.8%
Negative31.6%

GOIKOI 英単語

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews28 reviews
Positive89.3%
Neutral10.7%
Negative0.0%

In-app purchases

10 purchases

MotiTan

Subscriptions9
  • 1-Month Plan (Special Offer)3 Days trial$9.991 Month
  • 1-Month Plan$10.991 Month
  • 12-Month Plan (Special Offer)3 Days trial$59.991 Year
Show 6 more
  • 12-Month Plan (Special Offer)$59.991 Year
  • 12-Month Plan$71.991 Year
  • Family Plan (Special Offer)3 Days trial$71.991 Year
  • Family Plan (Special Offer)14 Days trial$71.991 Year
  • Family Plan (Special Offer)$71.991 Year
  • Family Plan$89.991 Year
One-time1
  • 1 Motivation Gem$0.99
2 purchases

GOIKOI 英単語

Subscriptions2
  • Pro 月間プラン (1 ヶ月)$11.991 Month
  • Pro 年間プラン (12 ヶ月)$69.991 Year

Questions

Is MotiTan free?
MotiTan is free to download, with in-app purchases available.
Is GOIKOI 英単語 free?
GOIKOI 英単語 is free to download, with in-app purchases available.
Which has better reviews, MotiTan or GOIKOI 英単語?
GOIKOI 英単語 is rated higher. MotiTan averages 4.7 out of 5 from 154 ratings, while GOIKOI 英単語 averages 5.0 from 5 ratings.
Do MotiTan or GOIKOI 英単語 have ads?
MotiTan shows ads; GOIKOI 英単語 does not.
Which is updated more often, MotiTan or GOIKOI 英単語?
MotiTan ships an update every 8 days, and GOIKOI 英単語 every 5 weeks. Most recently, MotiTan was updated on November 7, 2026 and GOIKOI 英単語 on November 4, 2026.

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