# ExploreMath vs Errolux DSE數學錯題簿

The clearest difference is in-app purchases: ExploreMath at none against Errolux DSE數學錯題簿's 3. Errolux DSE數學錯題簿's advantage is update cadence (daily vs every 6 days). On price, ads, device support and iOS requirement 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. ExploreMath asks for nothing beyond the download.

ExploreMath ships an update every 6 days, Errolux DSE數學錯題簿 daily. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ExploreMath | Errolux DSE數學錯題簿 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Size | 4 MB | 62 MB |
| Requires iOS | 15.0 | 15.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Hin Tsoi](https://appshunter.io/developer/1618879551) | [Kin Wai NG](https://appshunter.io/developer/1848593790) |

## What reviewers say

### ExploreMath

[App page](https://appshunter.io/ios/app/exploremath/id1620810052)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ExploreMath free?

ExploreMath is free to download, with no in-app purchases.

### 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.

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

Neither ExploreMath nor Errolux DSE數學錯題簿 shows ads.

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

ExploreMath ships an update every 6 days, and Errolux DSE數學錯題簿 daily. Most recently, ExploreMath was updated on October 27, 2026 and Errolux DSE數學錯題簿 on October 24, 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.*