# 智能文档处理专家 vs Decibel Detector

The clearest difference is in-app purchases: Decibel Detector at none against 智能文档处理专家's 2. 智能文档处理专家's advantage is update cadence (every 2 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 智能文档处理专家 sells 2 in-app purchases, starting at $4.99 per month. Decibel Detector asks for nothing beyond the download.

智能文档处理专家 ships an update every 2 weeks, Decibel Detector every 5 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 智能文档处理专家 | Decibel Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decibel-detector/id6745181319/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | — | Free |
| Size | 12 MB | 33 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tham Ngoc Thi Nguyen](https://appshunter.io/developer/1801245690) | [北京泰燊信息技术有限公司](https://appshunter.io/developer/1784907008) |

## What reviewers say

### 智能文档处理专家

[App page](https://appshunter.io/ios/app/and-and/id6743088253)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一个月 | $4.99 | per month |
| 一年 | $19.99 | per year |


### Decibel Detector

[App page](https://appshunter.io/ios/app/decibel-detector/id6745181319)

This app provides real-time environmental noise monitoring and data tracking. It offers smart alerts for custom noise thresholds and generates professional PDF reports. Adaptable to various scenarios, it helps users understand acoustic data and identify sound sources.

**Highlights:** Real-time decibel monitoring, Historical data tracking, Customizable smart alerts, Multi-scenario adaptation, Professional PDF reporting, FFT spectrum analysis, Environmental noise classification

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 智能文档处理专家 free?

智能文档处理专家 is free to download, with in-app purchases available.

### Is Decibel Detector free?

Decibel Detector is free to download, with no in-app purchases.

### Do 智能文档处理专家 or Decibel Detector have ads?

Neither 智能文档处理专家 nor Decibel Detector shows ads.

### Which is updated more often, 智能文档处理专家 or Decibel Detector?

智能文档处理专家 ships an update every 2 weeks, and Decibel Detector every 5 months. Most recently, 智能文档处理专家 was updated on October 25, 2026 and Decibel Detector on October 24, 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.*