# Live Spectrogram vs SmarterNoise Pro

The clearest difference is price: SmarterNoise Pro at Free against Live Spectrogram's $1.99. SmarterNoise Pro also leads on update cadence (monthly vs every 31 months) and ratings volume (31 vs 6). Live Spectrogram's advantage is in-app purchases (none vs 4) and review sentiment (63% vs 29%). On ads, device support and iOS requirement there is nothing between them.

SmarterNoise Pro is free to download; Live Spectrogram costs $1.99 up front. SmarterNoise Pro sells 4 one-off in-app purchases. Live Spectrogram asks for nothing beyond the download.

Live Spectrogram holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: SmarterNoise Pro has 31 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 63% of Live Spectrogram's written reviews are positive against 29% of SmarterNoise Pro's.

Live Spectrogram ships an update every 31 months, SmarterNoise Pro monthly. The most recent releases landed on September 4, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Live Spectrogram | SmarterNoise Pro |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/live-spectrogram/id630831185/reviews)** | [4.4 (31 ratings)](https://appshunter.io/ios/app/smarternoise-pro/id1466745030/reviews) |
| Number of ratings | 6 | **31** |
| Positive reviews | **62.5% of reviews** | 28.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#172** | — |
| Size | 15 MB | 24 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Johan Rogard](https://appshunter.io/developer/1384299041) |

## What reviewers say

### Live Spectrogram

[App page](https://appshunter.io/ios/app/live-spectrogram/id630831185)

**Currently charting:** #172 Top Paid · Utilities (US App Store)

Visualize sound frequencies in real-time with this tool. It displays audio intensity across time and frequency using color, helping you perfect singing, analyze animal calls, or locate household noises.

**Highlights:** Real-time audio visualization, Frequency analysis, Time-based spectrum display, Intensity shown by color, Singing voice perfection, Animal call analysis, Sound source identification

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

**In-app purchases:** none


### SmarterNoise Pro

[App page](https://appshunter.io/ios/app/smarternoise-pro/id1466745030)

This advanced sound level meter app offers detailed audio analysis with features like frequency spectrum display and data export. It allows for precise sound measurements in both video and audio recording modes, with options for A-, C-, or no weighting.

**Highlights:** Sound level measurement in video/audio modes, Frequency spectrum display, Export measurement data (CSV), Sound level activated audio recording, Calibration tool, Full HD video recording (paid)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera upgrade | $0.99 | one-time |
| Frequency spectrum indicator | $1.99 | one-time |
| Video and audio recording | $1.99 | one-time |
| Spectrogram display | $1.99 | one-time |


## Frequently asked questions

### Is Live Spectrogram free?

Live Spectrogram costs $1.99, with no in-app purchases.

### Is SmarterNoise Pro free?

SmarterNoise Pro is free to download, with in-app purchases available.

### Which has better reviews, Live Spectrogram or SmarterNoise Pro?

Live Spectrogram is rated higher. Live Spectrogram averages 4.8 out of 5 from 6 ratings, while SmarterNoise Pro averages 4.4 from 31 ratings.

### Do Live Spectrogram or SmarterNoise Pro have ads?

Neither Live Spectrogram nor SmarterNoise Pro shows ads.

### Which is updated more often, Live Spectrogram or SmarterNoise Pro?

Live Spectrogram ships an update every 31 months, and SmarterNoise Pro monthly. Most recently, Live Spectrogram was updated on September 4, 2026 and SmarterNoise Pro on September 7, 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.*