# PDF Universal vs Smart PDF

The clearest difference is in-app purchases: Smart PDF at none against PDF Universal's 1. Smart PDF also leads on ads (none vs shown) and chart position (#87 vs unranked). PDF Universal's advantage is update cadence (every 2 days vs weekly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Universal sells 1 one-off in-app purchase. Smart PDF asks for nothing beyond the download.

PDF Universal ships an update every 2 days, Smart PDF weekly. The most recent releases landed on September 19, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PDF Universal | Smart PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (1.2K ratings)](https://appshunter.io/ios/app/smart-pdf/id6744004415/reviews)** |
| Number of ratings | — | **1.2K** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | — | Free |
| Best chart rank | — | **#87** |
| Size | 51 MB | 34 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [AMARDEEP DHILLON](https://appshunter.io/developer/999752727) | [ORBITAL TECH PTE. LTD.](https://appshunter.io/developer/1705364538) |

## What reviewers say

### PDF Universal

[App page](https://appshunter.io/ios/app/pdf-universal/id6499565745)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.99 | one-time |


### Smart PDF

[App page](https://appshunter.io/ios/app/smart-pdf/id6744004415)

**Currently charting:** #87 Top Free · Utilities (US App Store)

Easily manage and process PDF files with this powerful tool. Convert PDFs to images, create PDFs from images, and merge multiple documents seamlessly. Streamline your workflow and enhance productivity with its intuitive interface.

**Highlights:** Convert PDFs to images, Transform images into PDFs, Merge multiple PDF files, Intuitive interface, Boost productivity

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Universal free?

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

### Is Smart PDF free?

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

### Do PDF Universal or Smart PDF have ads?

PDF Universal shows ads; Smart PDF does not.

### Which is updated more often, PDF Universal or Smart PDF?

PDF Universal ships an update every 2 days, and Smart PDF weekly. Most recently, PDF Universal was updated on September 19, 2026 and Smart PDF on September 30, 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.*