# Decibel Meter vs 指南针

The clearest difference is ratings volume: Decibel Meter at 907 against 指南针's 3. Decibel Meter also leads on device support. On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Decibel Meter sells 8 in-app purchases, starting at $1.99 per 7 days and 指南针 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for Decibel Meter against 4.3 for 指南针. That said, the two scores are not equally well evidenced: Decibel Meter has 907 ratings behind it against 3, so its average is the more settled of the two.

## The numbers

| Metric | Decibel Meter | 指南针 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (907 ratings)](https://appshunter.io/ios/app/decibel-meter-measure-db-level/id1274038012/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/and/id6459364282/reviews)** |
| Number of ratings | **907** | 3 |
| Positive reviews | 56.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | — |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 107 MB | 4 MB |
| Requires iOS | 13 | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [文波 曾](https://appshunter.io/developer/1557199654) | [雅琼 王](https://appshunter.io/developer/1701273788) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-measure-db-level/id1274038012)

Transform your phone into a professional-grade decibel meter for real-time noise detection. Features advanced algorithms, noise visualization, and recording capabilities for comprehensive sound analysis.

**Highlights:** Military-grade algorithm, Professional GB weighted detection, Noise recording, Noise classification system, AI ambient noise visualization, Noise dosimeter

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free trail then subscribe | $1.99 | per 7 days |
| 分贝测试仪专业版 | $2.99 | per 3 months |
| 分贝仪专业版 | $2.99 | per 7 days |
| 分贝测试仪专业版 | $4.49 | per 6 months |
| Pro Monthly Subscription | $5.49 | per month |
| 分贝测试仪专业版 | $25.99 | per year |
| Remove advertisement | $0.99 | one-time |
| 终身尊享权益 | $29.99 | one-time |

**What reviewers like**

- 👍 Accurate decibel measurements
- 🚀 Easy to use
- 💡 Useful for various applications (e.g. restaurants, heating systems)
- 🚀 Free version works great

**What reviewers complain about**

- 🐛 Inaccurate readings at higher decibel levels
- 🔒 Requires location access for no apparent reason
- 🔒 Excessive ads and subscription model
- 🐛 Compatibility issues (e.g. no iPad support, Chinese EULA)

**Reported bugs**

- Decibel readings capped at 90 dB
- Displaying incorrect address information
- Crashing or freezing on launch
- Showing 70 dB in a completely silent room

**Requested features**

- Landscape mode for iPad
- Ability to detect sounds above 90 dB
- Option to disable ads or switch to a paid version


### 指南针

[App page](https://appshunter.io/ios/app/and/id6459364282)

This utility app uses your phone's magnetometer to indicate direction, helping you find north and navigate unfamiliar places. It combines digital compass features with map and GPS navigation for easy exploration.

**Highlights:** Digital compass, Direction indication, Map integration, GPS navigation, Outdoor activity assistance, Location finding

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月费会员 | $9.99 | one-time |
| 季费会员 | $29.99 | one-time |
| 年费会员 | $39.99 | one-time |


## Frequently asked questions

### Is Decibel Meter free?

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

### Is 指南针 free?

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

### Which has better reviews, Decibel Meter or 指南针?

指南针 is rated higher. Decibel Meter averages 4.3 out of 5 from 907 ratings, while 指南针 averages 4.3 from 3 ratings.

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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.*