# DET vs Fun Math Arithmetic

The clearest difference is ads: DET at none against Fun Math Arithmetic's shown. Fun Math Arithmetic's advantage is update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

DET ships an update weekly, Fun Math Arithmetic every 3 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | DET | Fun Math Arithmetic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (35 ratings)](https://appshunter.io/ios/app/det-duolingo-english-test/id6754582936/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 25.8% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 99 MB | 4 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Duolingo, Inc](https://appshunter.io/developer/570060151) | [Ranjodh Singh](https://appshunter.io/developer/6818197986) |

## What reviewers say

### 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


### Fun Math Arithmetic

[App page](https://appshunter.io/ios/app/fun-math-arithmetic/id6818600951)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DET free?

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

### Is Fun Math Arithmetic free?

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

### Do DET or Fun Math Arithmetic have ads?

Fun Math Arithmetic shows ads; DET does not.

### Which is updated more often, DET or Fun Math Arithmetic?

DET ships an update weekly, and Fun Math Arithmetic every 3 days. Most recently, DET was updated on November 9, 2026 and Fun Math Arithmetic 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.*