# Decibel Meter Plus vs Text Scanner AI

The clearest difference is price: Text Scanner AI at Free against Decibel Meter Plus's $6.99. Text Scanner AI also leads on rating (5.0 vs 3.0). Decibel Meter Plus's advantage is review sentiment (36% vs 0%) and in-app purchases (none vs 1). On update cadence, ads, monetization model and device support there is nothing between them.

Text Scanner AI is free to download; Decibel Meter Plus costs $6.99 up front. Text Scanner AI sells 1 one-off in-app purchase. Decibel Meter Plus asks for nothing beyond the download.

Text Scanner AI holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Decibel Meter Plus has 126 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 36% of Decibel Meter Plus's written reviews are positive against 0% of Text Scanner AI's, so the app with the better star average is not the one people write more warmly about.

Decibel Meter Plus ships an update every 2 months, Text Scanner AI every 3 weeks. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus | Text Scanner AI |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.0 (126 ratings)](https://appshunter.io/ios/app/decibel-meter-plus/id648142711/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/text-scanner-ai-ocr-and-scan/id6748146382/reviews)** |
| Number of ratings | **126** | 2 |
| Positive reviews | **35.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 8 MB |
| Requires iOS | **15.8** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [Andy Soft](https://appshunter.io/developer/367577511) |

## What reviewers say

### Decibel Meter Plus

[App page](https://appshunter.io/ios/app/decibel-meter-plus/id648142711)

Measure ambient sound levels and understand their impact on hearing. This app provides real-time decibel readings, exposure time guidelines, and information on noise-induced hearing loss. It helps you identify loud environments and learn how to protect your hearing.

**Highlights:** Measure sound levels, Display average, peak, and max values, Plotted history of average values, Information on NIHL, Decibel exposure time guidelines, Calibrate measurements, Record and export data

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and simple interface
- 📊 Clear visual display with color-coded sound levels
- 🎯 Useful for comparative measurements
- 📈 Includes graphical strip chart functionality
- ⚡ Responsive and quick performance

**What reviewers complain about**

- ❌ Severely inaccurate decibel readings
- 📍 Consistently reads 10-50 dB higher than actual levels
- 🔧 No calibration function available
- 🐛 Doesn't return to 0 dB in silent conditions
- 📱 Requires app updates and iOS compatibility fixes

**Reported bugs**

- App requires developer updates and iOS compatibility fixes
- Baseline reading of 50-80 dB even in complete silence
- Readings spike dramatically with minimal sound input
- Graph display lacks user control
- Inconsistent measurements in same environment

**Requested features**

- Calibration function to adjust readings
- Higher maximum dB limit (120+ dB) for loud events
- Ability to attach photos with meter readings
- Better baseline reset to 0 dB in silence
- dB(A) weighting filter option


### Text Scanner AI

[App page](https://appshunter.io/ios/app/text-scanner-ai-ocr-and-scan/id6748146382)

This app transforms your device into an AI-powered scanner, digitizing documents, extracting text from images, and translating content. It offers features like multi-page scanning, perspective correction, and iCloud sync for seamless document management.

**Highlights:** AI-powered document scanning, Text extraction from photos, Multi-language translation, PDF export, Perspective correction, iCloud sync

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Text Scanner AI - Premium | $2.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus free?

Decibel Meter Plus costs $6.99, with no in-app purchases.

### Is Text Scanner AI free?

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

### Which has better reviews, Decibel Meter Plus or Text Scanner AI?

Text Scanner AI is rated higher. Decibel Meter Plus averages 3.0 out of 5 from 126 ratings, while Text Scanner AI averages 5.0 from 2 ratings.

### Do Decibel Meter Plus or Text Scanner AI have ads?

Neither Decibel Meter Plus nor Text Scanner AI shows ads.

### Which is updated more often, Decibel Meter Plus or Text Scanner AI?

Decibel Meter Plus ships an update every 2 months, and Text Scanner AI every 3 weeks. Most recently, Decibel Meter Plus was updated on November 6, 2026 and Text Scanner AI on November 7, 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.*