# AI Clean Flow vs PDF Reader

The clearest difference is review sentiment: AI Clean Flow at 43% against PDF Reader's 0%. AI Clean Flow also leads on rating (4.3 vs 3.9) and ratings volume (153 vs 13). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AI Clean Flow sells 13 in-app purchases, starting at $7.99 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 Flow holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: AI Clean Flow has 153 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 43% of AI Clean Flow's written reviews are positive against 0% of PDF Reader's.

AI Clean Flow ships an update every 3 weeks, PDF Reader every 2 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | AI Clean Flow | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (153 ratings)](https://appshunter.io/ios/app/ai-clean-flow/id6744596175/reviews)** | [3.9 (13 ratings)](https://appshunter.io/ios/app/pdf-reader-ez-read-pdf/id6752860700/reviews) |
| Number of ratings | **153** | 13 |
| Positive reviews | **42.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 195 MB | 42 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [林知 郭](https://appshunter.io/developer/1716211027) | [欣 翁](https://appshunter.io/developer/1748126630) |

## What reviewers say

### AI Clean Flow

[App page](https://appshunter.io/ios/app/ai-clean-flow/id6744596175)

This app helps declutter your photo gallery by identifying and removing unwanted screenshots, blurry images, and duplicates. It also offers system information about your photo storage and can repair broken photos to HD quality using AI, freeing up valuable space on your device.

**Highlights:** Remove duplicate photos, Remove oversized photos, Remove poor quality photos/videos, Repair broken photos to HD, View system photo gallery information, Free up storage space

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Sub | $7.99 | per 7 days |
| Weekly Sub | $7.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $14.99 | per 7 days |
| AI Clean Flow VIP | $23.99 | per year |
| Yearly VIP | $29.99 | per year |
| Yearly VIP | $34.99 | per year |
| Annual subscription | $39.99 | per year |
| Yearly VIP | $49.99 | per year |
| Yearly VIP | $59.99 | per year |
| Lifetime use | $34.99 | one-time |


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-ez-read-pdf/id6752860700)

This utility app allows users to open and manage various file formats, including PDFs, Docs, PPTs, and Excels. It offers powerful search capabilities, clear viewing options with annotation browsing, and easy sharing and printing of documents. Enjoy a high-speed, stable experience with a convenient night mode for reading in low light.

**Highlights:** Full-text PDF search, Annotation browsing, Outline support, Document sharing and printing, High-speed viewing, Night mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly | $9.99 | per 7 days |
| yearly | $29.99 | per year |


## Frequently asked questions

### Is AI Clean Flow free?

AI Clean Flow 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 Flow or PDF Reader?

AI Clean Flow is rated higher. AI Clean Flow averages 4.3 out of 5 from 153 ratings, while PDF Reader averages 3.9 from 13 ratings.

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

Both AI Clean Flow and PDF Reader show ads.

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

AI Clean Flow ships an update every 3 weeks, and PDF Reader every 2 weeks. Most recently, AI Clean Flow was updated on October 15, 2026 and PDF Reader on October 3, 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.*