# Offline PDF Reader vs Noise Reducer

The clearest difference is in-app purchases: Offline PDF Reader at none against Noise Reducer's 4. Noise Reducer's advantage is iOS requirement (12.0 vs 14.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Noise Reducer sells 4 in-app purchases, starting at $5.99 per 7 days. Offline PDF Reader asks for nothing beyond the download.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 26, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Offline PDF Reader | Noise Reducer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/offline-pdf-reader/id6529545267/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Daily | Daily |
| Monetization | Ad-supported | — |
| Size | 70 MB | 98 MB |
| Requires iOS | 14.2 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hopebest Inc Limited](https://appshunter.io/developer/1717524727) | [Manohar Varu](https://appshunter.io/developer/1741749388) |

## What reviewers say

### Offline PDF Reader

[App page](https://appshunter.io/ios/app/offline-pdf-reader/id6529545267)

Easily combine multiple PDF files into a single document. This app prioritizes your privacy by processing all files locally on your device, ensuring your sensitive information remains confidential and secure.

**Highlights:** Combine multiple PDF files, Intuitive merging feature, Local document processing, Secure and private, Easy navigation

**Features:** macOS Compatibility

**In-app purchases:** none


### Noise Reducer

[App page](https://appshunter.io/ios/app/noise-reducer-audio-enhancer/id6738113514)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Noise Reducer One Week | $5.99 | per 7 days |
| Noise Reducer 200 Credit | $14.99 | one-time |
| Noise Reducer 400 Credit | $29.99 | one-time |
| Noise Reducer 600 Credit | $44.99 | one-time |


## Frequently asked questions

### Is Offline PDF Reader free?

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

### Is Noise Reducer free?

Noise Reducer is free to download, with in-app purchases available.

### Do Offline PDF Reader or Noise Reducer have ads?

Both Offline PDF Reader and Noise Reducer show ads.

### Which is updated more often, Offline PDF Reader or Noise Reducer?

Offline PDF Reader ships an update daily, and Noise Reducer daily. Most recently, Offline PDF Reader was updated on September 26, 2026 and Noise Reducer on September 9, 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.*