# SoundMeterK vs Sound Level & Spectrogram

The clearest difference is update cadence: SoundMeterK at every 4 days against Sound Level & Spectrogram's every 5 months. SoundMeterK also leads on iOS requirement (16.0 vs 18.7). On price, ads, in-app purchases and device support there is nothing between them.

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

SoundMeterK ships an update every 4 days, Sound Level & Spectrogram every 5 months. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SoundMeterK | Sound Level & Spectrogram |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 5 months |
| Monetization | — | Ad-supported |
| Size | 9 MB | 4 MB |
| Requires iOS | **16.0** | 18.7 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HIROYUKI SAITO](https://appshunter.io/developer/1696233625) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### SoundMeterK

[App page](https://appshunter.io/ios/app/soundmeterk/id6451013612)

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

**In-app purchases:** none


### Sound Level & Spectrogram

[App page](https://appshunter.io/ios/app/sound-level-and-spectrogram/id6503722682)

Measure sound levels in decibels and visualize sound frequencies with a real-time spectrogram. Understand your environment's noise and protect your health. Offers advanced settings for accurate acoustic analysis.

**Highlights:** Sound level measurement (dB), Real-time spectrogram analysis, Frequency weighting correction (A, C, Z), Time weighting characteristics (Fast, Slow), Time course graph, Environmental noise measurement

**In-app purchases:** none


## Frequently asked questions

### Is SoundMeterK free?

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

### Is Sound Level & Spectrogram free?

Sound Level & Spectrogram is free to download, with no in-app purchases.

### Do SoundMeterK or Sound Level & Spectrogram have ads?

Both SoundMeterK and Sound Level & Spectrogram show ads.

### Which is updated more often, SoundMeterK or Sound Level & Spectrogram?

SoundMeterK ships an update every 4 days, and Sound Level & Spectrogram every 5 months. Most recently, SoundMeterK was updated on September 17, 2026 and Sound Level & Spectrogram on September 18, 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.*