# DejaVocab vs HelloWord

DejaVocab and HelloWord are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. DejaVocab sells 6 in-app purchases, starting at $5.99 per month and HelloWord sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

DejaVocab ships an update weekly, HelloWord every 9 days. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | DejaVocab | HelloWord |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (52 ratings)](https://appshunter.io/ios/app/dejavocab/id6753130604/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | **85.5% of reviews** | 82.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 292 MB | 40 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [灏 龙](https://appshunter.io/developer/1842626848) | [轩 刘](https://appshunter.io/developer/1554407305) |

## What reviewers say

### DejaVocab

[App page](https://appshunter.io/ios/app/dejavocab/id6753130604)

This app helps you learn languages by immersing you in real-world content like videos, podcasts, and books. It builds a personal language corpus by capturing and organizing language chunks from natural input, allowing you to review words within their original context. The system integrates spoken and written language for a continuous learning experience.

**Highlights:** Learn from videos, podcasts, and audiobooks, Build a personal language corpus, Review vocabulary in original context, Integrates spoken and written language, Supports EPUB, PDF, and text files

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DejaVocab 高级版 | $5.99 | per month |
| DejaVocab 高级版 | $7.99 | per month |
| DejaVocab 高级版年付 | $49.99 | per year |
| DejaVocab 专业版年付 | $69.99 | per year |
| DejaVocab 共建者 | $199.99 | one-time |
| DejaVocab 共建者 Plus | $299.99 | one-time |


### HelloWord

[App page](https://appshunter.io/ios/app/helloword/id6756203867)

This app helps you learn vocabulary on your Apple Watch, even offline. It offers instant pronunciation, example sentences, and quick word switching with gestures. It's designed for independent use without needing your iPhone nearby.

**Highlights:** Independent Apple Watch operation, Offline pronunciation, Example sentence viewing, Gesture-based word switching, Supports iPhone and iPad

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Word+ 月度会员 | $0.99 | per month |
| Word+ 年度会员 | $7.99 | per year |


## Frequently asked questions

### Is DejaVocab free?

DejaVocab is free to download, with in-app purchases available.

### Is HelloWord free?

HelloWord is free to download, with in-app purchases available.

### Do DejaVocab or HelloWord have ads?

Neither DejaVocab nor HelloWord shows ads.

### Which is updated more often, DejaVocab or HelloWord?

DejaVocab ships an update weekly, and HelloWord every 9 days. Most recently, DejaVocab was updated on September 24, 2026 and HelloWord on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*