Comparison

Hello! Word vs Define

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

Head to head
About

Hello! Word

Read full description

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.

About

Define

Features
Read full description

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

Hello! Word4 screens
Define4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 8, 2026 and November 14, 2026 respectively.

Scorecard1 real difference · 5 level
Hello! Word versus Define: the parameters behind the verdict, then further details
ParameterHello! WordDefine
PriceFreeFree
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better26.0
Further details — not scored
Size33 MB10 MB
Age rating4+4+
DeveloperKohei ImabayashiVirtual GS

In-app purchases

None

Hello! Word

No in-app purchases

None

Define

No in-app purchases

Questions

Is Hello! Word free?
Hello! Word is free to download, with no in-app purchases.
Is Define free?
Define is free to download, with no in-app purchases.
Do Hello! Word or Define have ads?
Neither Hello! Word nor Define shows ads.
Which is updated more often, Hello! Word or Define?
Hello! Word ships an update every 4 days, and Define every 4 days. Most recently, Hello! Word was updated on November 8, 2026 and Define on November 14, 2026.

Other comparisons