# Pupil.Size vs Mollu

The clearest difference is update cadence: Mollu at daily against Pupil.Size's every 2 months. Pupil.Size's advantage is iOS requirement (11.0 vs 26.0). On price, ads, 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.Size ships an update every 2 months, Mollu daily. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Pupil.Size | Mollu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/pupilsize/id1356860766/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | — |
| Size | 1 MB | 59 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SCALAR CORP.](https://appshunter.io/developer/374875261) | [MINSIK KIM](https://appshunter.io/developer/1828565083) |

## What reviewers say

### Pupil.Size

[App page](https://appshunter.io/ios/app/pupilsize/id1356860766)

This utility app uses your device's camera to measure pupil diameter in real time. It's designed for quick and easy pupil size analysis.

**Highlights:** Real-time pupil diameter measurement, Uses device camera, Pupil size analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Mollu

[App page](https://appshunter.io/ios/app/mollu/id6815125230)

**In-app purchases:** none


## Frequently asked questions

### Is Pupil.Size free?

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

### Is Mollu free?

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

### Do Pupil.Size or Mollu have ads?

Neither Pupil.Size nor Mollu shows ads.

### Which is updated more often, Pupil.Size or Mollu?

Pupil.Size ships an update every 2 months, and Mollu daily. Most recently, Pupil.Size was updated on November 2, 2026 and Mollu on November 6, 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.*