# NoiseLevel vs Sound Level & Spectrogram

The clearest difference is price: Sound Level & Spectrogram at Free against NoiseLevel's $0.99. Sound Level & Spectrogram also leads on review sentiment (100% vs 56%). NoiseLevel's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 months). On in-app purchases and device support there is nothing between them.

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

NoiseLevel ships an update fortnightly, Sound Level & Spectrogram every 5 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | NoiseLevel | Sound Level & Spectrogram |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.6 (28 ratings)](https://appshunter.io/ios/app/noiselevel/id302830630/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 56.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Paid | **Ad-supported** |
| Size | 3 MB | 4 MB |
| Requires iOS | **10.0** | 18.7 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [KBMSoft ApS](https://appshunter.io/developer/288294299) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### NoiseLevel

[App page](https://appshunter.io/ios/app/noiselevel/id302830630)

Measure ambient sound levels in decibels using your device's microphone. Visualize sound intensity with a dynamic balloon that changes size and color, bursting at high levels. Experiment with different sounds and environments for fun and insight.

**Highlights:** Measures sound in decibels (dB), Visualizes sound with a dynamic balloon, Balloon size and color change with sound level, Balloon bursts at high sound levels, Uses device microphone, Screen orientation flips

**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 NoiseLevel free?

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

### Is Sound Level & Spectrogram free?

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

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

Sound Level & Spectrogram shows ads; NoiseLevel does not.

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

NoiseLevel ships an update fortnightly, and Sound Level & Spectrogram every 5 months. Most recently, NoiseLevel was updated on October 15, 2026 and Sound Level & Spectrogram on October 6, 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.*