# Errolux DSE數學錯題簿 vs Word Out

The clearest difference is update cadence: Errolux DSE數學錯題簿 at daily against Word Out's every 5 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Errolux DSE數學錯題簿 sells 3 in-app purchases, starting at $4.99 per month and Word Out sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Errolux DSE數學錯題簿 ships an update daily, Word Out every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Errolux DSE數學錯題簿 | Word Out |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Size | 62 MB | 11 MB |
| Requires iOS | 15.0.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kin Wai NG](https://appshunter.io/developer/1848593790) | [Lau Ka Yu Andy](https://appshunter.io/developer/6806498815) |

## What reviewers say

### Errolux DSE數學錯題簿

[App page](https://appshunter.io/ios/app/errolux-dse/id6754518544)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Errolux Pro - Monthly Subscription | $4.99 | per month |
| Errolux Pro - Annual Subscription | $34.99 | per year |
| Errolux Pro User | $69.99 | one-time |


### Word Out

[App page](https://appshunter.io/ios/app/word-out/id6806498813)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Word Out Pro 月費計劃 | $1.99 | per month |
| Word Out Pro 年費計劃 | $19.99 | per year |


## Frequently asked questions

### Is Errolux DSE數學錯題簿 free?

Errolux DSE數學錯題簿 is free to download, with in-app purchases available.

### Is Word Out free?

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

### Do Errolux DSE數學錯題簿 or Word Out have ads?

Neither Errolux DSE數學錯題簿 nor Word Out shows ads.

### Which is updated more often, Errolux DSE數學錯題簿 or Word Out?

Errolux DSE數學錯題簿 ships an update daily, and Word Out every 5 days. Most recently, Errolux DSE數學錯題簿 was updated on November 5, 2026 and Word Out on October 31, 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.*