# NIOSH Sound Level Meter vs ExView®

The clearest difference is ratings volume: NIOSH Sound Level Meter at 17K against ExView®'s 1. ExView®'s advantage is rating (5.0 vs 4.7) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ExView® holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: NIOSH Sound Level Meter has 17K ratings behind it against 1, so its average is the more settled of the two.

NIOSH Sound Level Meter ships an update every 4 months, ExView® every 6 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | NIOSH Sound Level Meter | ExView® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (17K ratings)](https://appshunter.io/ios/app/niosh-sound-level-meter/id1096545820/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/exview/id1547400277/reviews)** |
| Number of ratings | **17K** | 1 |
| Positive reviews | 64.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 6 MB | 92 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EA LAB](https://appshunter.io/developer/1005558529) | [Extech Instruments](https://appshunter.io/developer/966942122) |

## What reviewers say

### NIOSH Sound Level Meter

[App page](https://appshunter.io/ios/app/niosh-sound-level-meter/id1096545820)

This free app measures sound levels and noise exposure using your smartphone. Developed by acoustics experts, it provides professional-grade metrics and guidance on hearing protection and noise prevention.

**Highlights:** Sound level measurement, Noise dosimetry, Hearing hazard information, Hearing protector guidelines, Data reporting and sharing, Microphone calibration

**In-app purchases:** none

**What reviewers like**

- 🚀 Free and ad-free
- 👍 Simple and intuitive interface
- ⚖️ Accurate and reliable measurements
- 💡 Useful for monitoring noise levels in various environments
- 🔍 Provides detailed noise data and exposure information

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔌 Issues with external microphone support
- 🔋 Can drain battery when running for extended periods
- 📱 Limited iPad optimization

**Reported bugs**

- Inconsistent or inaccurate readings in some cases
- Inability to properly connect and use external microphones
- Freezing or crashing when minimizing the app

**Requested features**

- Ability to save and export measurement sessions
- Option to run the app in the background while the screen is locked
- Integration with Apple Health for long-term noise exposure tracking
- Frequency-specific noise measurements (e.g., A-weighted, C-weighted)


### ExView®

[App page](https://appshunter.io/ios/app/exview/id1547400277)

This app connects to compatible meters to collect, trend, and analyze environmental data remotely. It allows for real-time monitoring, setting alarms, and generating custom PDF reports with photos. Data can be easily shared with team members.

**Highlights:** Remote data collection and trending, Real-time dashboard view, Bluetooth connectivity up to 90m, Programmable high/low alarms, Export data as CSV, Generate custom PDF reports, Attach photos to reports

**In-app purchases:** none


## Frequently asked questions

### Is NIOSH Sound Level Meter free?

NIOSH Sound Level Meter is free to download, with no in-app purchases.

### Is ExView® free?

ExView® is free to download, with no in-app purchases.

### Which has better reviews, NIOSH Sound Level Meter or ExView®?

ExView® is rated higher. NIOSH Sound Level Meter averages 4.7 out of 5 from 17K ratings, while ExView® averages 5.0 from 1 ratings.

### Do NIOSH Sound Level Meter or ExView® have ads?

Neither NIOSH Sound Level Meter nor ExView® shows ads.

### Which is updated more often, NIOSH Sound Level Meter or ExView®?

NIOSH Sound Level Meter ships an update every 4 months, and ExView® every 6 months. Most recently, NIOSH Sound Level Meter was updated on November 10, 2026 and ExView® on November 3, 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.*