# Pupil Detection vs TrueDetect Device Test

The clearest difference is ads: TrueDetect Device Test at none against Pupil Detection's shown. TrueDetect Device Test also leads on iOS requirement (15.0 vs 17.7.2). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Pupil Detection ships an update every 2 weeks, TrueDetect Device Test weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Pupil Detection | TrueDetect Device Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 36 MB | 3 MB |
| Requires iOS | 17.7.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [AMIR AKBAR](https://appshunter.io/developer/6790856040) |

## What reviewers say

### Pupil Detection

[App page](https://appshunter.io/ios/app/pupil-detection/id6739671823)

**Features:** macOS Compatibility

**In-app purchases:** none


### TrueDetect Device Test

[App page](https://appshunter.io/ios/app/truedetect-device-test/id6799417064)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pupil Detection free?

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

### Is TrueDetect Device Test free?

TrueDetect Device Test is free to download, with no in-app purchases.

### Do Pupil Detection or TrueDetect Device Test have ads?

Pupil Detection shows ads; TrueDetect Device Test does not.

### Which is updated more often, Pupil Detection or TrueDetect Device Test?

Pupil Detection ships an update every 2 weeks, and TrueDetect Device Test weekly. Most recently, Pupil Detection was updated on November 4, 2026 and TrueDetect Device Test 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.*