# AI Clean vs PDF Reader

AI Clean and PDF Reader both sit at 4.5 stars, but that hides the real split: 75% of PDF Reader's written reviews are positive against 62% of AI Clean's. PDF Reader also leads on chart position (#190 vs unranked). AI Clean's advantage is ratings volume (1.2K vs 134). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. AI Clean sells 9 in-app purchases, starting at $5.99 per 7 days and PDF Reader sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AI Clean holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: AI Clean has 1.2K ratings behind it against 134, so its average is the more settled of the two. Written reviews complicate that: 62% of AI Clean's written reviews are positive against 75% of PDF Reader's, so the app with the better star average is not the one people write more warmly about.

AI Clean ships an update every 2 weeks, PDF Reader every 3 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | AI Clean | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.2K ratings)](https://appshunter.io/ios/app/ai-clean-fast-storage-cleaner/id6498886052/reviews)** | [4.3 (134 ratings)](https://appshunter.io/ios/app/pdf-reader-edit-and-ocr-scan/id6774545766/reviews) |
| Number of ratings | **1.2K** | 134 |
| Positive reviews | 61.7% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#190** |
| Size | 119 MB | 22 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [希望移动科技(深圳)有限公司](https://appshunter.io/developer/1536906993) | [Duc Duong Tran](https://appshunter.io/developer/1580090879) |

## What reviewers say

### AI Clean

[App page](https://appshunter.io/ios/app/ai-clean-fast-storage-cleaner/id6498886052)

This app uses AI to free up iPhone storage by cleaning photos, videos, contacts, and hidden files. It offers smart photo organization, compression, and contact management, all processed on-device for privacy.

**Highlights:** Smart photo cleanup, Compress photos and videos, Merge and delete contacts, On-device processing, Free up storage space, Organize iPhone

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Days Free Trial | $5.99 | per 7 days |
| Premium Weekly | $6.99 | per 7 days |
| 3-Days Free Trial | $6.99 | per 7 days |
| Premium Weekly | $7.99 | per 7 days |
| 3-Days Free Trial | $9.99 | per 7 days |
| Premium Weekly | $9.99 | per 7 days |
| Premium Yearly | $39.99 | per year |
| Premium Lifetime | $39.99 | one-time |
| Premium Lifetime | $49.99 | one-time |


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-edit-and-ocr-scan/id6774545766)

**Currently charting:** #190 Top Grossing · Productivity (US App Store)

This app allows you to scan, read, edit, and manage PDF documents on your iPhone and iPad. Features include OCR text extraction, annotation tools, digital signatures, and file organization.

**Highlights:** Scan documents with camera, Convert photos to PDF, Extract text with OCR, Annotate and highlight PDFs, Add digital signatures, Merge and split PDFs, Password protection

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $9.99 | per 7 days |
| Premium Weekly | $14.99 | per 7 days |


## Frequently asked questions

### Is AI Clean free?

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

### Is PDF Reader free?

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

### Which has better reviews, AI Clean or PDF Reader?

AI Clean is rated higher. AI Clean averages 4.5 out of 5 from 1.2K ratings, while PDF Reader averages 4.3 from 134 ratings.

### Do AI Clean or PDF Reader have ads?

Both AI Clean and PDF Reader show ads.

### Which is updated more often, AI Clean or PDF Reader?

AI Clean ships an update every 2 weeks, and PDF Reader every 3 weeks. Most recently, AI Clean was updated on November 8, 2026 and PDF Reader on November 5, 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.*