# LF vs SpectralScan Audio Analyzer dB

The clearest difference is in-app purchases: LF at none against SpectralScan Audio Analyzer dB's 1. LF also leads on iOS requirement (13.0 vs 15.0). SpectralScan Audio Analyzer dB's advantage is update cadence (every 9 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. SpectralScan Audio Analyzer dB sells 1 one-off in-app purchase. LF asks for nothing beyond the download.

LF ships an update every 4 months, SpectralScan Audio Analyzer dB every 9 days. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | LF | SpectralScan Audio Analyzer dB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (12 ratings)](https://appshunter.io/ios/app/spectralscan-audio-analyzer-db/id6762024331/reviews)** |
| Number of ratings | — | **12** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Yuexin Sound Technology Co., Ltd](https://appshunter.io/developer/1833380008) | [Otsukare AB](https://appshunter.io/developer/1892516192) |

## What reviewers say

### LF

[App page](https://appshunter.io/ios/app/lf/id6756494549)

**Features:** macOS Compatibility

**In-app purchases:** none


### SpectralScan Audio Analyzer dB

[App page](https://appshunter.io/ios/app/spectralscan-audio-analyzer-db/id6762024331)

Transform your device into a professional audio analysis tool. Visualize sound in real-time with a high-resolution spectrum, perform precise sine sweep measurements, and analyze frequency content over time. Save, compare, and export your audio data.

**Highlights:** Real-time frequency spectrum visualization, Sine sweep measurements for system response, Spectrogram for time-frequency analysis, Comparison and overlay of multiple measurements, Export data as CSV or PNG, Pro features for advanced analysis

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectralScan Pro | $9.99 | one-time |


## Frequently asked questions

### Is LF free?

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

### Is SpectralScan Audio Analyzer dB free?

SpectralScan Audio Analyzer dB is free to download, with in-app purchases available.

### Do LF or SpectralScan Audio Analyzer dB have ads?

Neither LF nor SpectralScan Audio Analyzer dB shows ads.

### Which is updated more often, LF or SpectralScan Audio Analyzer dB?

LF ships an update every 4 months, and SpectralScan Audio Analyzer dB every 9 days. Most recently, LF was updated on October 4, 2026 and SpectralScan Audio Analyzer dB on October 19, 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.*