Re vs 英単語Pochi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Re
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“Re:Num7” Welcome to the app! This app challenges your working memory. [Magic Number 7±2] It is believed that we use temporary memory, or “working memory,” to remember information like numbers temporarily—especially when they have no particular meaning in sequence—such as when dialing a phone number from a handwritten note. Cognitive psychology suggests that, while individual differences exist, most people can handle chunks of information—essentially blocks of data—with a capacity of around 7, or 7±2 items. This is known as the “Magic Number 7±2.” This app will help you test the capacity of your working memory. See for yourself if this magic number holds true for you—whether your capacity is larger or smaller. How to play: Present a number with a specified number of digits, hide it, then have the user recall and input the number. If it matches, it's OK. Perform 10 sets of this task and observe the accuracy rate. A perfect game is achieved with all questions correct. Calculate a score based on the number of digits and accuracy rate, and compete with others. Scores can be recorded with a nickname and displayed in a ranking. This is expected to provide the following benefits: ・Gain an estimate of your working memory capacity ・Repeated practice may increase working memory capacity ・Similarly, it may help prevent or slow cognitive decline associated with aging ・Improves concentration, and above all, getting answers right is fun Features: ・Choose your preferred keypad layout for number input: phone layout, calculator layout, or (on iPad) horizontal row layout ・You can select the number of digits, generation method, and display method Digit Count: Each level offers three consecutive digit counts, plus a mode where these three counts are increased in three stages from shortest to longest Generation Method: Choose between a method that minimizes repetition (like drawing cards from a deck) or a completely random method Display Method: Options include showing all digits at once or displaying digits sequentially (step-up). A non-hidden method is also available, but the score will be 0 ・It is divided into four levels based on the range of digit counts. Beginner: Choose 5, 6, or 7 digits, or step-up from 5 to 7 digits. Most players should be able to clear this. Intermediate: Choose 7, 8, or 9 digits, or step-up from 7 to 9 digits. Clearable with effort. Advanced: 9, 10, 11 digits. You can choose step-up from 9 to 11 digits. With effort, some may be clearable. Extra: 11, 12, 13 digits. You can choose step-up from 11 to 13 digits. This likely exceeds human capability. Therefore, it is not locked. Aim to clear even a part of it with effort. ・A tutorial function is provided to make getting started easier. ・While primarily designed for individual play, you can register scores with a custom nickname upon game completion, allowing friendly competition with family or friends. ・We've prepared a mode that's easier to play, though your score will decrease. - Doubles the display time for challenge numbers (score halved) - Displays the C (Clear entry) key to re-enter input (using it reduces that challenge's score by 10%) The challenges themselves are simple and straightforward. However, actually attempting them reveals how difficulty skyrockets with increasing digit counts, offering a fascinating experience.
英単語Pochi
Create flashcards automatically from videos, articles, and images. This app uses AI to extract vocabulary and spaced repetition to help you memorize words efficiently. Track your progress and stay motivated with various learning modes and features.
- Automatic flashcard creation from videos, articles, and images
- AI-powered vocabulary extraction
- Spaced Repetition System (SRS) for efficient memorization
- Multiple learning modes (flashcard, quiz)
- Progress tracking and achievement system
- Data import/export and backup
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英単語Pochiは、動画・記事・写真から単語カードを自動で作り、間隔反復(SRS)で効率よく覚えるフラッシュカードアプリです。忘れかけたタイミングで自動的に復習をスケジュールし、最小限の努力で英単語を長期記憶に定着させます。 【動画リンクから自動作成】 ・YouTubeなど動画のURLを貼るだけ ・字幕からネイティブの表現・スラング・ミーム・難単語をAIが抽出 ・例文と再生位置つきで、生の英語と一緒に覚えられます ・例文の場面の動画を、アプリの中でそのまま再生できます ※表現抽出に AI を使用していますが、送信したデータが AI の学習に使われることはありません。 【記事リンクから自動作成】 ・ニュース記事やブログのURLを貼るだけ ・覚えておくべき単語・専門用語・コロケーションをAIが抽出 ・難易度別・タイプ別に整理して表示 ※表現抽出に AI を使用していますが、送信したデータが AI の学習に使われることはありません。 【画像を撮って自動作成】 ・教科書や問題集を撮るだけでAIが英語表現を抽出(写真や、フォルダ・「ファイル」アプリの画像からも作れます) ・イディオム、句動詞、コロケーションを自動で検出 ・日本語訳と例文も自動生成 ※表現抽出に AI を使用していますが、送信したデータが AI の学習に使われることはありません。 【単語カード & クイズの2つの学習モード】 ・暗記モード:タップするだけで直感的に学習 ・クイズモード:4択問題でしっかり記憶を確認 ・英語→日本語、日本語→英語、ランダムの3方向で学習可能 【科学に基づいた復習スケジュール】 ・SM-2アルゴリズムで復習間隔を自動調整 ・覚えたカードは間隔が伸び、忘れたカードはすぐに再出題 ・5枚ずつのセグメント学習で記憶定着率を向上 【学習を続けたくなる仕組み】 ・学習カレンダーで日々の進捗を可視化 ・実績システムで学習の継続をサポート ・習熟度レベルで単語の定着度を一目で把握 【柔軟なデータ管理】 ・CSV/JSONファイルからの一括インポート ・データのエクスポート・バックアップ対応 ・カードに画像やメモを追加可能 【無料でも充実】 ・3冊のブック(各30枚まで) ・暗記&クイズの両モード ・AIでカードを作るお試しつき(お試しポイント20pt) ・学習統計 【プラン】 ・ブック・カードの上限解除(買い切り ¥300、お試し100pt付き) ・ベーシック(月額 ¥500、毎月300pt) ・スタンダード(月額 ¥1,500、毎月1,500pt) ・プロ(月額 ¥3,000、毎月3,000pt) ・ポイントパック(¥1,000、500pt、期限なし) ・ポイントは動画・記事・テキスト・画像で共通です(動画は1本5pt+1分ごとに1pt、記事・テキストは50語で1pt(1回10ptから)、画像は1枚6pt) ・サブスクに加入すると、ブック・カードの上限解除も含まれます ・前からのプランを契約中の方は、そのまま続けられます 【利用規約(EULA)】 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Re at none against 英単語Pochi's 9. 英単語Pochi's advantage is ads (none vs shown) and update cadence (every 10 days vs every 2 months). On price, device support and iOS requirement 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
Both are free to download. 英単語Pochi sells 9 in-app purchases, starting at $1.99 per month. Re asks for nothing beyond the download.
Re ships an update every 2 months, 英単語Pochi every 10 days. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.
| Parameter | Re | 英単語Pochi |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 11 MB |
| Age rating | 12+ | 4+ |
| Developer | 有限会社知識情報研究所 | Shuhei Okazaki |
In-app purchases
Re
No in-app purchases
英単語Pochi
- Pochi Pro ライト$1.991 Month
- ベーシック$2.991 Month
- Pochi Pro スタンダード$2.991 Month
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- Pochi Pro プレミアム$5.991 Month
- スタンダード$9.991 Month
- プロ$19.991 Month
- AI MAX$29.991 Month
- 全機能解放(AIスキャンを除く)$1.99
- ポイントパック$5.99









