FTP Sprite+ vs Audio Spectrum Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FTP Sprite+
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.
- 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
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FTP Sprite can turn your iPhone, ipad, ipod into ftp client, download files from ftp server and upload files into ftp server. *****specifically as follows: *****FTP Action ** Add, modify, delete ftp server ** Download multiple files/folder Supported ** Upload multiple files/folder Supported ** Living progress ** View files online ** Create folder online ** Download and upload history ** Sorting by file name, create date and file size *****Local File Sharing ** USB File Sharing via iTunes ** Http File Sharing via WiFi,Support Safari, chrome, firefox and IE6/7/8/9 ** Chrome and Firefox Supported upload multiple files ** Email multiple files/folder Supported ** Open files using other applications *****Local File Manage ** New Folder ** Sorting by file name, create date and file type ** View, copy, move, delete, rename, email, zip Compression and unzip files/folders ** Glide deleting function ** Select all and Cancel all ** Photo import Supported ** Bookmark supported *****File View ** New plain text(default encoding UTF-8),Convert plain file encoding (Unicode,UTF-8 etc) [.txt] ** External file content copy or paste ** Photo View, Zoom [.png .jpg .jpeg .gif .bmp .xbm .tif .tiff etc]; ** Document reader [.pdf .rtf .csv .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later) etc] ** Video Player [.mp4] ** File Compression and Decompression [.zip .rar] ** Extract files from encryption .rar ** Multi-touch Supported, Zoom files ** Landscape mode supported ** iPad-compatible
Audio Spectrum Viewer
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.
- 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
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Audio Spectrum Viewer is an easy to use app which will show the frequency content of your live audio environment in an easy to understand waterfall / spectrogram. This tool can be used to analyze the performance of speakers and sound systems, and to create audio fingerprint images of environmental sounds such as bird songs and other animal sounds. Audio Spectrum Viewer is a powerful tool with user-selectable gain, sample rate and other parameters to optimize for a particular setting. Spectrograms can be saved to the camera roll with a timestamped and customizable caption and the audio clips can be saved for later playback. Audio can be captured in the background so you can simultaneously take photos of birds while analyzing their sounds.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | FTP Sprite+ | Audio Spectrum Viewer |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 2.8 (6 ratings) | 4.3 (4 ratings) — better |
| Positive reviews | 53.1% of reviews — better | 50.0% of reviews |
| Number of ratings | 6 — better | 4 |
| Update frequency | Every 4 months — better | Every 72 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 39 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 锦文 游 | Steve Glenner |
Customer experience
FTP Sprite+
Audio Spectrum Viewer
In-app purchases
FTP Sprite+
No in-app purchases
Audio Spectrum Viewer
No in-app purchases
Questions
Is FTP Sprite+ free?
Is Audio Spectrum Viewer free?
Which has better reviews, FTP Sprite+ or Audio Spectrum Viewer?
Do FTP Sprite+ or Audio Spectrum Viewer have ads?
Which is updated more often, FTP Sprite+ or Audio Spectrum Viewer?
Other comparisons
