# Pupil Detection vs EyeScaler

The clearest difference is in-app purchases: Pupil Detection at none against EyeScaler's 1. EyeScaler's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.7.2). On price, update cadence and device support there is nothing between them.

Both are free to download. EyeScaler sells 1 one-off in-app purchase. Pupil Detection asks for nothing beyond the download.

Pupil Detection ships an update every 2 weeks, EyeScaler fortnightly. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Pupil Detection | EyeScaler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Size | 36 MB | 4 MB |
| Requires iOS | 17.7.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [建芳 马](https://appshunter.io/developer/1809381883) |

## What reviewers say

### Pupil Detection

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

**Features:** macOS Compatibility

**In-app purchases:** none


### EyeScaler

[App page](https://appshunter.io/ios/app/eyescaler/id6754126877)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EyeScale Lifetime PRO | $2.99 | one-time |


## Frequently asked questions

### Is Pupil Detection free?

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

### Is EyeScaler free?

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

### Do Pupil Detection or EyeScaler have ads?

Pupil Detection shows ads; EyeScaler does not.

### Which is updated more often, Pupil Detection or EyeScaler?

Pupil Detection ships an update every 2 weeks, and EyeScaler fortnightly. Most recently, Pupil Detection was updated on October 9, 2026 and EyeScaler on October 25, 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.*