Hello! Word vs GREify
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.
GREify
This app enhances your GRE vocabulary by seamlessly replacing common words with GRE-level terms as you browse the web. Learn new words naturally within the context of articles and blogs you already read, without altering your daily habits.
- Replaces common words with GRE vocabulary
- Integrates with Safari browser
- Passive vocabulary learning
- Learn up to 2,700 GRE words
- Works on iPhone, iPad, and Mac
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GREify: Replace Common Word With GRE Vocab While Browsing Safari Say goodbye to tedious flashcards memorization. GREify transforms your everyday web browsing into a smart GRE study session Learn Up to 2,700 GRE Words Naturally • GREify subtly replaces up to 2,700 common GRE words into the articles, blogs, and news you already read — helping you absorb vocabulary in real-life context Seamless Safari Integration • Designed as a Safari browser extension, GREify works effortlessly on iPhone, iPad, and Mac. Whether you're scrolling headlines or deep-diving into essays, your vocab skills grow passively Why GREify? • Learn through immersion, not memorization • Expand your vocabulary without changing your habits • Perfect for busy students and passive learners alike
Screenshots
Verdict
The clearest difference is iOS requirement: Hello! Word at 12.0 against GREify's 16.0. 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.
Hello! Word ships an update every 4 days, GREify every 3 days. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.
| Parameter | Hello! Word | GREify |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 33 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Kohei Imabayashi | 晟远 鲁 |
In-app purchases
Hello! Word
No in-app purchases
GREify
No in-app purchases









