# Merge PDF vs Smart Pupilometer

The clearest difference is in-app purchases: Smart Pupilometer at none against Merge PDF's 2. Merge PDF's advantage is iOS requirement (15.1 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Merge PDF sells 2 in-app purchases, starting at $4.99 per 7 days. Smart Pupilometer asks for nothing beyond the download.

## The numbers

| Metric | Merge PDF | Smart Pupilometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/merge-pdf-combine-pdf-and-split/id6755649844/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 45 MB | 5 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrii Kulchytskyi](https://appshunter.io/developer/1759867572) | [Ahmad Khousa](https://appshunter.io/developer/1497438745) |

## What reviewers say

### Merge PDF

[App page](https://appshunter.io/ios/app/merge-pdf-combine-pdf-and-split/id6755649844)

Easily combine, split, rotate, and organize PDF files directly on your device. This app offers a complete set of tools for managing PDFs offline, ensuring your documents remain private and secure.

**Highlights:** Combine multiple PDF files, Split PDFs by page number or equal parts, Rotate pages by 90, 180, or 270 degrees, Delete unwanted pages, Rearrange page order, Insert blank or existing pages, View PDFs within the app, Offline processing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Merge PDF Weekly with 3 days free | $4.99 | per 7 days |
| Merge PDF Yearly | $19.99 | per year |


### Smart Pupilometer

[App page](https://appshunter.io/ios/app/smart-pupilometer/id6784207654)

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

**In-app purchases:** none


## Frequently asked questions

### Is Merge PDF free?

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

### Is Smart Pupilometer free?

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

### Do Merge PDF or Smart Pupilometer have ads?

Neither Merge PDF nor Smart Pupilometer 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.*