# Sound Level & Spectrogram vs LagMeter

The clearest difference is price: Sound Level & Spectrogram at Free against LagMeter's $0.99. LagMeter's advantage is ads (none vs shown) and iOS requirement (16.0 vs 18.7). On in-app purchases and device support there is nothing between them.

Sound Level & Spectrogram is free to download; LagMeter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sound Level & Spectrogram | LagMeter |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Ad-supported | — |
| Size | 4 MB | 2 MB |
| Requires iOS | 18.7 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Naoya Sato](https://appshunter.io/developer/1629194164) |

## What reviewers say

### 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


### LagMeter

[App page](https://appshunter.io/ios/app/lagmeter/id6781614106)

**In-app purchases:** none


## Frequently asked questions

### Is Sound Level & Spectrogram free?

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

### Is LagMeter free?

LagMeter costs $0.99, with no in-app purchases.

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

Sound Level & Spectrogram shows ads; LagMeter does not.

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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.*