Comparison

Memori英単語 vs Math Gallery

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

Head to head
About

Memori英単語

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Memori英単語は、3つの学習ルートで単語を覚えられる、新感覚英単語学習アプリです。 ■ スワイプで仕分け、直感的にインプット 単語カードを見て「知らない」「知っている」「完全に知っている」に振り分けるだけ。ゲーム感覚で、迷わずサクサク進められます。 ■ 記憶テスト&定着テストで、忘れる前に思い出す 覚えた単語は、記憶テストと定着テストで繰り返し復習。人は忘れる生き物だからこそ、ちょうどいいタイミングでの再テストが記憶を長期記憶へと変えていきます。 ■ バトルで対戦、学びをもっと楽しく 覚えた単語を武器に、友達や世界中のプレイヤーと単語バトル。一人だと続かない学習も、対戦という緊張感があれば毎日続けたくなります。 ■ ランクとごほうびで、継続をサポート 学習を積み重ねるほどランクが上がり、ごほうびがもらえる仕組み。頑張りが目に見える形で返ってくるから、次のプレイへの意欲がわきます。 ■ こんな人におすすめ ・単語帳が続かなかった人 ・TOEIC・TOEFL・受験英語・英検などの語彙力を鍛えたい人 ・スキマ時間でコツコツ英語力を伸ばしたい人 ・一人の勉強に飽きて、誰かと競い合いたい人 毎日のちょっとした時間が、着実な語彙力に変わっていく。今日からMemori英単語で、新しい単語学習の習慣を始めてみませんか。 【自動更新サブスクリプションについて】 ・商品名:Memori Premium Monthly ・期間:1か月 ・購入確認後、Apple IDアカウントに課金されます。 ・サブスクリプションは、現在の契約期間終了の24時間前までに解約されない限り、自動更新されます。 ・更新料金は、現在の契約期間終了前24時間以内にApple IDアカウントへ請求されます。 ・購入後は、App Storeのアカウント設定からサブスクリプションを管理・解約できます。 利用規約: https://memori.viavico.org/terms プライバシーポリシー: https://memori.viavico.org/privacy

About

Math Gallery

Features
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Explore mathematical ideas through Japanese stories and interactive diagrams. LANGUAGE The app interface, stories and explanations are in Japanese. This English page describes the Japanese-language app. 36 STORIES Explore the Pythagorean theorem, circle area, the Euclidean algorithm, pi, quadratic functions, derivatives, the Monty Hall problem, the birthday paradox, prime numbers, Fibonacci numbers, similarity, inscribed angles, the pigeonhole principle, one-stroke paths and average speed. Browse by school level or subject. PREDICT, EXPERIMENT, UNDERSTAND Choose a prediction, move a diagram, read the reasoning, explore a more advanced idea, then try a practice question. Each story has five sections you can follow at your own pace. Your chosen prediction appears as you continue, so you can compare it with the explanation. STEP-BY-STEP DIAGRAMS Practice questions include explanations with diagrams that change as you move through the solution. You can open an explanation whenever you need it. Furigana helps you read unfamiliar Japanese mathematical terms. FOR IPHONE AND IPAD Learning content works offline. No account, ads or in-app purchases. Recently opened stories are saved on your device.

Screenshots

Memori英単語4 screens
Math Gallery4 screens

Verdict

The call

The clearest difference is in-app purchases: Math Gallery at none against Memori英単語's 6. Math Gallery also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). Memori英単語's advantage is iOS requirement (16.4 vs 26.0). 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. Memori英単語 sells 6 in-app purchases, starting at $5.99 per month. Math Gallery asks for nothing beyond the download.

UpkeepUpdate frequency

Memori英単語 ships an update weekly, Math Gallery every 2 days. Both last shipped on October 31, 2026.

Scorecard4 real differences · 2 level
Memori英単語 versus Math Gallery: the parameters behind the verdict, then further details
ParameterMemori英単語Math Gallery
PriceFreeFree
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better26.0
Further details — not scored
Size36 MB11 MB
Age rating12+4+
DeveloperVIA VICO, K.K.Naoki Chiba

In-app purchases

6 purchases

Memori英単語

Subscriptions1
  • Memori Premium$5.991 Month
One-time5
  • Memori Ticket x10$0.99
  • Memori Ticket x50$3.99
  • Memori Ticket x100$6.99
Show 2 more
  • Memori Ticket x250$17.99
  • Memori Ticket x500$29.99
None

Math Gallery

No in-app purchases

Questions

Is Memori英単語 free?
Memori英単語 is free to download, with in-app purchases available.
Is Math Gallery free?
Math Gallery is free to download, with no in-app purchases.
Do Memori英単語 or Math Gallery have ads?
Memori英単語 shows ads; Math Gallery does not.
Which is updated more often, Memori英単語 or Math Gallery?
Memori英単語 ships an update weekly, and Math Gallery every 2 days. Most recently, Memori英単語 was updated on October 31, 2026 and Math Gallery on October 31, 2026.

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