# Pupil.Size vs Chatmergency

The clearest difference is in-app purchases: Pupil.Size at none against Chatmergency's 1. Pupil.Size also leads on iOS requirement (11.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. Chatmergency sells 1 in-app purchase, starting at $0.99 per month. Pupil.Size asks for nothing beyond the download.

## The numbers

| Metric | Pupil.Size | Chatmergency |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SCALAR CORP.](https://appshunter.io/developer/374875261) | [Andrew Shingleton](https://appshunter.io/developer/1699483946) |

## 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


### Chatmergency

[App page](https://appshunter.io/ios/app/chatmergency/id6736376938)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |


## Frequently asked questions

### Is Pupil.Size free?

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

### Is Chatmergency free?

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

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

Neither Pupil.Size nor Chatmergency shows ads.

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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.*