# Decibel Meter dB Sky vs 进制转换器

The clearest difference is price: Decibel Meter dB Sky at Free against 进制转换器's $0.99. 进制转换器's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Decibel Meter dB Sky is free to download; 进制转换器 costs $0.99 up front. Decibel Meter dB Sky sells 1 one-off in-app purchase. 进制转换器 asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter dB Sky | 进制转换器 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-db-sky/id1451820892/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 21 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 16 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [春豪 李](https://appshunter.io/developer/1451820891) | [春辉 林](https://appshunter.io/developer/1687703456) |

## What reviewers say

### Decibel Meter dB Sky

[App page](https://appshunter.io/ios/app/decibel-meter-db-sky/id1451820892)

Measure ambient sound levels with a clear dial and record audio to understand sound changes. Save and replay moments, with advanced features available through a one-time purchase.

**Highlights:** Live sound-level estimates and curves, Local audio recording and playback, Screen-locked recording, Photo sound cards, Scene archives, Timed recording stops, Sound timeline and recap

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime Unlock | $2.99 | one-time |


### 进制转换器

[App page](https://appshunter.io/ios/app/id6740689104)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter dB Sky free?

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

### Is 进制转换器 free?

进制转换器 costs $0.99, with no in-app purchases.

### Do Decibel Meter dB Sky or 进制转换器 have ads?

Decibel Meter dB Sky shows ads; 进制转换器 does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*