# Sound Meter (Decibel) vs ai.Audio Controller

The clearest difference is rating: Sound Meter (Decibel) at 4.5 against ai.Audio Controller's 2.5. Sound Meter (Decibel) also leads on in-app purchases (none vs 1) and ratings volume (3.3K vs 2). ai.Audio Controller's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ai.Audio Controller sells 1 one-off in-app purchase. Sound Meter (Decibel) asks for nothing beyond the download.

Sound Meter (Decibel) holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Sound Meter (Decibel) has 3.3K ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 5 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | Sound Meter (Decibel) | ai.Audio Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (3.3K ratings)](https://appshunter.io/ios/app/sound-meter-decibel/id1626613141/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/aiaudio-controller/id1638449704/reviews) |
| Number of ratings | **3.3K** | 2 |
| Positive reviews | 50.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 8 MB | 9 MB |
| Requires iOS | **14.1** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [UniCom Technology](https://appshunter.io/developer/1270764210) | [Narcyz Adamus](https://appshunter.io/developer/1092865008) |

## 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


### ai.Audio Controller

[App page](https://appshunter.io/ios/app/aiaudio-controller/id1638449704)

Control your ROTEL audio system with precision. Adjust volume, tone, and input, and sync power across multiple devices. Offers fine-tuned sensitivity and safety features for an enhanced listening experience.

**Highlights:** Volume, balance, and tone control, Sync power and dimming, Configurable max volume limit, Alternative button mode with haptic feedback, Multichannel/surround setup support, Automatic device detection, Widgets for scenes and monitoring

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Functionality | $14.99 | one-time |


## Frequently asked questions

### Is Sound Meter (Decibel) free?

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

### Is ai.Audio Controller free?

ai.Audio Controller is free to download, with in-app purchases available.

### Which has better reviews, Sound Meter (Decibel) or ai.Audio Controller?

Sound Meter (Decibel) is rated higher. Sound Meter (Decibel) averages 4.5 out of 5 from 3.3K ratings, while ai.Audio Controller averages 2.5 from 2 ratings.

### Do Sound Meter (Decibel) or ai.Audio Controller have ads?

Sound Meter (Decibel) shows ads; ai.Audio Controller does not.

### Which is updated more often, Sound Meter (Decibel) or ai.Audio Controller?

Sound Meter (Decibel) ships an update every 5 months, and ai.Audio Controller every 5 months. Most recently, Sound Meter (Decibel) was updated on October 27, 2026 and ai.Audio Controller on October 27, 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.*