# PDF Reader vs Storm Cleaner

The clearest difference is update cadence: Storm Cleaner at every 8 days against PDF Reader's every 3 weeks. Storm Cleaner also leads on ratings volume (13 vs 1). PDF Reader's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PDF Reader sells 2 in-app purchases, starting at $19.99 per 7 days and Storm Cleaner sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Reader holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Storm Cleaner has 13 ratings behind it against 1, so its average is the more settled of the two.

PDF Reader ships an update every 3 weeks, Storm Cleaner every 8 days. The most recent releases landed on September 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PDF Reader | Storm Cleaner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-reader-editing/id6742738204/reviews)** | [4.8 (13 ratings)](https://appshunter.io/ios/app/storm-cleaner-clean-up-storage/id6748904407/reviews) |
| Number of ratings | 1 | **13** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 26 MB | 32 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [蕊 安](https://appshunter.io/developer/1665482948) | [Shenzhen Yayi E-commerce Co., Ltd.](https://appshunter.io/developer/1540230011) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-editing/id6742738204)

Easily read, annotate, and edit PDF documents with a comprehensive suite of tools. Mark important information, add text, signatures, and even merge or convert files. Secure your documents with password protection.

**Highlights:** Highlight and underline text, Hand-drawn annotation, Add text and fill forms, Digital signature and seal, Merge PDF files, Convert PDF to Word/JPG, Password protection

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Bronze | $19.99 | per 7 days |
| Premium Gold | $39.99 | per year |


### Storm Cleaner

[App page](https://appshunter.io/ios/app/storm-cleaner-clean-up-storage/id6748904407)

This app uses AI to find and remove duplicate photos, videos, and screenshots. It also helps organize contacts and calendars, freeing up valuable storage space on your device.

**Highlights:** Smart duplicate photo cleanup, Duplicate video detection, Screenshot organization, Contact merging, Calendar event deletion, AI-powered scanning, On-device processing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Only $0.99 for the first week. | $4.99 | per 7 days |
| Weekly Subscription | $4.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Annual subscription | $14.99 | per year |


## Frequently asked questions

### Is PDF Reader free?

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

### Is Storm Cleaner free?

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

### Which has better reviews, PDF Reader or Storm Cleaner?

PDF Reader is rated higher. PDF Reader averages 5.0 out of 5 from 1 ratings, while Storm Cleaner averages 4.8 from 13 ratings.

### Do PDF Reader or Storm Cleaner have ads?

Both PDF Reader and Storm Cleaner show ads.

### Which is updated more often, PDF Reader or Storm Cleaner?

PDF Reader ships an update every 3 weeks, and Storm Cleaner every 8 days. Most recently, PDF Reader was updated on September 24, 2026 and Storm Cleaner on October 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.*