# Live Spectrogram vs Frequency Analyzer

The clearest difference is review sentiment: Live Spectrogram at 63% against Frequency Analyzer's 10%. Live Spectrogram also leads on in-app purchases (none vs 11) and rating (4.8 vs 4.5). Frequency Analyzer's advantage is price (Free vs $1.99) and update cadence (every 8 days vs every 31 months). On ads there is nothing between them.

Frequency Analyzer is free to download; Live Spectrogram costs $1.99 up front. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days. Live Spectrogram asks for nothing beyond the download.

Live Spectrogram holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Frequency Analyzer has 169 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 10% of Frequency Analyzer's.

Live Spectrogram ships an update every 31 months, Frequency Analyzer every 8 days. The most recent releases landed on September 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Live Spectrogram | Frequency Analyzer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/live-spectrogram/id630831185/reviews)** | [4.5 (169 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews) |
| Number of ratings | 6 | **169** |
| Positive reviews | **62.5% of reviews** | 10.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 15 MB | 35 MB |
| Requires iOS | **13.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Manfred Kuegel](https://appshunter.io/developer/1520736594) |

## What reviewers say

### Live Spectrogram

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

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


### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6468837339)

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

**Highlights:** Real-time FFT analysis, Calibrated SPL measurements, 32-bit float audio recording, Synchronized video recording, Spectrogram and octave band analysis, Export WAV, CSV, images, and videos

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Annual | $29.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Pro access for lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Live Spectrogram free?

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

### Is Frequency Analyzer free?

Frequency Analyzer is free to download, with in-app purchases available.

### Which has better reviews, Live Spectrogram or Frequency Analyzer?

Live Spectrogram is rated higher. Live Spectrogram averages 4.8 out of 5 from 6 ratings, while Frequency Analyzer averages 4.5 from 169 ratings.

### Do Live Spectrogram or Frequency Analyzer have ads?

Neither Live Spectrogram nor Frequency Analyzer shows ads.

### Which is updated more often, Live Spectrogram or Frequency Analyzer?

Live Spectrogram ships an update every 31 months, and Frequency Analyzer every 8 days. Most recently, Live Spectrogram was updated on September 18, 2026 and Frequency Analyzer on October 8, 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.*