Hello! Word vs Define
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hello! Word
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Vocabulary Memo App is a versatile, intuitive language learning tool designed to help you build and review your vocabulary effortlessly. With its sleek, user-friendly interface, you can quickly capture new words as you encounter them. Each entry supports detailed descriptions, example sentences, and even images captured from your camera or selected from your photo library—providing rich context for every word. A standout feature is the innovative flashcard mode. In this mode, a simple tap toggles between the word (front) and its detailed information (back), making it easy to test and reinforce your memory. Swiping right marks a word as "Known" and swiping left as "Unknown," enabling you to track your learning progress at a glance. Flexible filtering options let you sort and review vocabulary based on registration date, update date, learning status (e.g., "Review Later" or "Learned"), or flashcard results ("Known" or "Unknown"), so your review sessions are always tailored to your needs. With the newly added notification feature, you can receive timely reminders and updates on your learning progress—even while running other apps—ensuring that your language journey stays on track. Built with universal design principles, Vocabulary Memo App combines simplicity with sophisticated functionality to transform language learning into an engaging, efficient, and enjoyable experience—anytime, anywhere.
Define
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Defineは、Apple Intelligenceを搭載した新しいAI対応辞書/百科事典です。 質問するか画像をアップロードするだけで、必要な答えが得られます! 不適切な質問はご遠慮ください。テキスト読み上げ機能に対応しています。 すべてのデータはプライベートに保護され、インターネット接続なしでオフラインでも動作します。 Apple Intelligenceに対応したデバイスが必要です。例:iPhone 15 Pro以降、M1チップ搭載iPad/Mac以降、Vision Pro。
Screenshots
Verdict
The clearest difference is iOS requirement: Hello! Word at 12.0 against Define's 26.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 8, 2026 and November 14, 2026 respectively.
| Parameter | Hello! Word | Define |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Every 4 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 33 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Kohei Imabayashi | Virtual GS |
In-app purchases
Hello! Word
No in-app purchases
Define
No in-app purchases









