# Decibel Reader vs PDF Editor‐Converter & Viewer

The clearest difference is rating: PDF Editor‐Converter & Viewer at 5.0 against Decibel Reader's 4.5. PDF Editor‐Converter & Viewer also leads on ads (none vs shown) and review sentiment (100% vs 80%). Decibel Reader's advantage is update cadence (every 2 weeks vs every 2 months). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Decibel Reader sells 6 in-app purchases, starting at $3.99 per 7 days and PDF Editor‐Converter & Viewer sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Editor‐Converter & Viewer holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 24 and 15 respectively. Written reviews point the same way: 80% of Decibel Reader's written reviews are positive against 100% of PDF Editor‐Converter & Viewer's.

Decibel Reader ships an update every 2 weeks, PDF Editor‐Converter & Viewer every 2 months. The most recent releases landed on October 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Decibel Reader | PDF Editor‐Converter & Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (24 ratings)](https://appshunter.io/ios/app/decibel-reader/id6451411046/reviews) | **[5.0 (15 ratings)](https://appshunter.io/ios/app/pdf-editorconverter-and-viewer/id6755087997/reviews)** |
| Number of ratings | **24** | 15 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 111 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andy Sutanto](https://appshunter.io/developer/1659282966) | [Uka Osim](https://appshunter.io/developer/1441474206) |

## What reviewers say

### Decibel Reader

[App page](https://appshunter.io/ios/app/decibel-reader/id6451411046)

Measure ambient noise levels with real-time readings, tracking minimum, average, and maximum decibels. Offers calibration for accuracy and a dark mode for comfortable viewing. This tool helps you understand your sound environment.

**Highlights:** Real-time decibel measurement, Calibration for accuracy, Track min, average, and max noise levels, Dark mode for low-light use, Simple and intuitive interface

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Pro - 1 Week | $3.99 | per 7 days |
| Decibel Meter Pro - 1 Month | $7.99 | per month |
| Sound Level Meter - 6 Months | $19.99 | per 6 months |
| Noise Level Meter - 1 Year | $29.99 | per year |
| Decibel Meter Pro - 1Y 2 | $29.99 | per year |
| dB Meter Pro | $49.99 | one-time |


### PDF Editor‐Converter & Viewer

[App page](https://appshunter.io/ios/app/pdf-editorconverter-and-viewer/id6755087997)

Transform your phone into a powerful AI-enhanced document scanner. Effortlessly scan, convert images to PDF, extract text with OCR, and digitally sign documents. Organize and share your files instantly, making it ideal for work, school, or daily tasks.

**Highlights:** AI-enhanced document scanning, OCR text extraction, Digital document signing, PDF creation and conversion, Automatic edge detection and correction, Secure document organization, Multiple export options

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Editor - Week | $6.99 | per 7 days |
| PDF Editor - Month | $12.99 | per month |
| PDF Editor - Year | $44.99 | per year |


## Frequently asked questions

### Is Decibel Reader free?

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

### Is PDF Editor‐Converter & Viewer free?

PDF Editor‐Converter & Viewer is free to download, with in-app purchases available.

### Which has better reviews, Decibel Reader or PDF Editor‐Converter & Viewer?

PDF Editor‐Converter & Viewer is rated higher. Decibel Reader averages 4.5 out of 5 from 24 ratings, while PDF Editor‐Converter & Viewer averages 5.0 from 15 ratings.

### Do Decibel Reader or PDF Editor‐Converter & Viewer have ads?

Decibel Reader shows ads; PDF Editor‐Converter & Viewer does not.

### Which is updated more often, Decibel Reader or PDF Editor‐Converter & Viewer?

Decibel Reader ships an update every 2 weeks, and PDF Editor‐Converter & Viewer every 2 months. Most recently, Decibel Reader was updated on October 22, 2026 and PDF Editor‐Converter & Viewer on September 21, 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.*