# Sound Meter (Decibel) vs 캘렌드(Caliend)

The clearest difference is ads: 캘렌드(Caliend) at none against Sound Meter (Decibel)'s shown. 캘렌드(Caliend) also leads on update cadence (every 2 days vs every 5 months). Sound Meter (Decibel)'s advantage is device support (4 vs 2) and iOS requirement (14.1 vs 26.0). On price 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.

Sound Meter (Decibel) ships an update every 5 months, 캘렌드(Caliend) every 2 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sound Meter (Decibel) | 캘렌드(Caliend) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (3.3K ratings)](https://appshunter.io/ios/app/sound-meter-decibel/id1626613141/reviews)** | — |
| Number of ratings | **3.3K** | — |
| Positive reviews | 50.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 6 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [UniCom Technology](https://appshunter.io/developer/1270764210) | [Hyeonkyu Lee](https://appshunter.io/developer/1896741405) |

## What reviewers say

### Sound Meter (Decibel)

[App page](https://appshunter.io/ios/app/sound-meter-decibel/id1626613141)

This application measures and displays environmental noise levels in decibels. It offers various visual representations of the data, including gauges, graphs, and numerical readouts. Users can also save their measurement history.

**Highlights:** Measures decibel values, Displays noise reference, Shows min/avg/max dB, Graphical decibel display, Saves measurement records

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Works perfectly
- 👍 Easy to use and free
- 👍 Good simple UI
- 👍 Good basic sound level meter
- 👍 Very easy and simplified display

**What reviewers complain about**

- 🐛 Spelling mistake ('quiet' spelled as 'quite')
- 🐛 Inaccurate readings compared to other apps
- 🐛 Requires a subscription for basic recording
- 🐛 Imprecise metering, not a reliable tool
- 🐛 Doesn't work in split screen

**Reported bugs**

- Apple security alert displayed on a Google ad
- Readings are half of other apps
- Misspelled 'quiet' throughout the app

**Requested features**

- Add option to prevent screen timeout
- Add landscape mode
- Improve accuracy and calibration


### 캘렌드(Caliend)

[App page](https://appshunter.io/ios/app/caliend/id6773222290)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sound Meter (Decibel) free?

Sound Meter (Decibel) is free to download, with no in-app purchases.

### Is 캘렌드(Caliend) free?

캘렌드(Caliend) is free to download, with no in-app purchases.

### Do Sound Meter (Decibel) or 캘렌드(Caliend) have ads?

Sound Meter (Decibel) shows ads; 캘렌드(Caliend) does not.

### Which is updated more often, Sound Meter (Decibel) or 캘렌드(Caliend)?

Sound Meter (Decibel) ships an update every 5 months, and 캘렌드(Caliend) every 2 days. Most recently, Sound Meter (Decibel) was updated on November 7, 2026 and 캘렌드(Caliend) on October 31, 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.*