# FTP Sprite+ vs Audio Spectrum Viewer

The clearest difference is rating: Audio Spectrum Viewer at 4.3 against FTP Sprite+'s 2.8. Audio Spectrum Viewer also leads on price ($0.99 vs $1.99). FTP Sprite+'s advantage is update cadence (every 4 months vs every 72 months) and iOS requirement (13.0 vs 16.6). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

FTP Sprite+ costs $1.99 and Audio Spectrum Viewer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Audio Spectrum Viewer holds the better App Store score, 4.3 against 2.8. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews complicate that: 53% of FTP Sprite+'s written reviews are positive against 50% of Audio Spectrum Viewer's, so the app with the better star average is not the one people write more warmly about.

FTP Sprite+ ships an update every 4 months, Audio Spectrum Viewer every 72 months. Both last shipped on October 17, 2026.

## The numbers

| Metric | FTP Sprite+ | Audio Spectrum Viewer |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/ftp-sprite-plus/id480523641/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/audio-spectrum-viewer/id1525023447/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | **53.1% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 72 months |
| Monetization | Paid | Paid |
| Size | 39 MB | 2 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [Steve Glenner](https://appshunter.io/developer/1518671062) |

## What reviewers say

### FTP Sprite+

[App page](https://appshunter.io/ios/app/ftp-sprite-plus/id480523641)

Transform your iOS device into a powerful FTP client. Easily download and upload files to and from FTP servers. Manage local files with a comprehensive suite of tools, including sharing, viewing, and editing capabilities.

**Highlights:** FTP file download and upload, Multiple file/folder support, Local file management, USB and WiFi file sharing, Document and photo viewer, File compression and decompression

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

**In-app purchases:** none


### Audio Spectrum Viewer

[App page](https://appshunter.io/ios/app/audio-spectrum-viewer/id1525023447)

Visualize the frequency content of your live audio environment with a dynamic waterfall spectrogram. Analyze sound systems, create audio fingerprints of environmental sounds, and save spectrograms with custom captions. Capture audio in the background for simultaneous recording and photography.

**Highlights:** Live audio frequency visualization, Waterfall/spectrogram display, Speaker and sound system analysis, Environmental sound fingerprinting, User-selectable gain and sample rate, Save spectrograms with captions, Save audio clips for playback

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

**In-app purchases:** none


## Frequently asked questions

### Is FTP Sprite+ free?

FTP Sprite+ costs $1.99, with no in-app purchases.

### Is Audio Spectrum Viewer free?

Audio Spectrum Viewer costs $0.99, with no in-app purchases.

### Which has better reviews, FTP Sprite+ or Audio Spectrum Viewer?

Audio Spectrum Viewer is rated higher. FTP Sprite+ averages 2.8 out of 5 from 6 ratings, while Audio Spectrum Viewer averages 4.3 from 4 ratings.

### Do FTP Sprite+ or Audio Spectrum Viewer have ads?

Neither FTP Sprite+ nor Audio Spectrum Viewer shows ads.

### Which is updated more often, FTP Sprite+ or Audio Spectrum Viewer?

FTP Sprite+ ships an update every 4 months, and Audio Spectrum Viewer every 72 months. Most recently, FTP Sprite+ was updated on October 17, 2026 and Audio Spectrum Viewer on October 17, 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.*