# Math Explorers vs DET

The clearest difference is ads: DET at none against Math Explorers's shown. DET also leads on update cadence (weekly vs every 6 weeks). Math Explorers's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price and in-app purchases there is nothing between them.

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

Math Explorers ships an update every 6 weeks, DET weekly. Both last shipped on October 28, 2026.

## The numbers

| Metric | Math Explorers | DET |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.1 (33 ratings)](https://appshunter.io/ios/app/det-duolingo-english-test/id6754582936/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | — | 25.8% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 112 MB | 99 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DONKEY BYTE](https://appshunter.io/developer/1839548305) | [Duolingo, Inc](https://appshunter.io/developer/570060151) |

## What reviewers say

### Math Explorers

[App page](https://appshunter.io/ios/app/math-explorers/id6745819979)

**Features:** macOS Compatibility

**In-app purchases:** none


### DET

[App page](https://appshunter.io/ios/app/det-duolingo-english-test/id6754582936)

This app facilitates the secure setup for a language proficiency exam. It guides users through submitting identification, scanning their face and ID, and performing room and ear scans. The app also configures your phone to record your computer during the test.

**Highlights:** Submit ID information, Scan face and ID, Complete room scan, Perform ear scan, Set up phone for computer recording

**In-app purchases:** none


## Frequently asked questions

### Is Math Explorers free?

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

### Is DET free?

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

### Do Math Explorers or DET have ads?

Math Explorers shows ads; DET does not.

### Which is updated more often, Math Explorers or DET?

Math Explorers ships an update every 6 weeks, and DET weekly. Most recently, Math Explorers was updated on October 28, 2026 and DET on October 28, 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.*