# Impulse Noise Decibel Meter vs LensTrace

The clearest difference is in-app purchases: Impulse Noise Decibel Meter at none against LensTrace's 2. LensTrace's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. LensTrace sells 2 one-off in-app purchases. Impulse Noise Decibel Meter asks for nothing beyond the download.

## The numbers

| Metric | Impulse Noise Decibel Meter | LensTrace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lenstrace/id6788419065/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 36 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Tigran Mkhitaryan](https://appshunter.io/developer/602761285) | [宁 李](https://appshunter.io/developer/6788214480) |

## What reviewers say

### Impulse Noise Decibel Meter

[App page](https://appshunter.io/ios/app/impulse-noise-decibel-meter/id6780625581)

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

**In-app purchases:** none


### LensTrace

[App page](https://appshunter.io/ios/app/lenstrace/id6788419065)

Enhance your photos with EXIF data and custom text watermarks. Add elegant frames and borders, with batch processing for efficient editing. Local processing ensures your data stays on your device.

**Highlights:** EXIF camera data watermarks, Custom text watermarks, Photo borders and frames, Batch import and export, Local photo processing, Custom font support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day Trial | Free | one-time |
| Lifetime Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Impulse Noise Decibel Meter free?

Impulse Noise Decibel Meter is free to download, with no in-app purchases.

### Is LensTrace free?

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

### Do Impulse Noise Decibel Meter or LensTrace have ads?

Neither Impulse Noise Decibel Meter nor LensTrace shows ads.

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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.*