TB Spectrogram vs Audio File Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TB Spectrogram
This app provides real-time audio analysis with a spectrogram, spectrum analyzer, and goniometer. It can be used as a standalone application or as an AUv3 plugin within compatible music production hosts. Visualize your audio in detail with adjustable settings and multiple display options.
- Real-time spectrogram and spectrum analysis
- Goniometer for stereo signal analysis
- AUv3 plugin compatibility
- Adjustable frequency and time resolution
- Customizable color themes
- On-screen piano keyboard mapping
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ToneBoosters Spectrogram shows a real-time spectrogram, spectrum, and goniometer AUv3 plugin! We have taken the stunning visual spectrum analyzer features from our latest and greatest Equalizer Pro plugin and released it as a separate app / AUv3 plugin! The ToneBoosters Spectrogram app captures the microphone input and processes the signals in real time. To use it as a plug-in, use an AUv3-compatible host app such as Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others. ToneBoosters Spectrogram will appear in the list of Audio Unit extensions for effect plug-ins. Key features: - Fully resizable (as AUv3 plugin) - Color themes for the user interface - Max screen support in Garageband - Adjustable color themes for UI and for spectrogram independently - Adjustable dynamic range - Adjustable frequency resolution - Adjustable time resolution - Adjustable spectral slope - Spectrogram AGC and dimming support - Show spectrogram and spectrum analyzer as overlay or individually - Spectrum analyzer also supports peak hold - Split-band goniometer for stereo signal analysis (correlation, left/right balance in one or two bands!) - On-screen piano keyboard to map spectrum analyzer to piano notes - Optimised for iPad and compatible with iPhone and iPod Touch What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.
Audio File Analyzer
Analyze audio files by viewing their waveform and real-time amplitude spectrum. Explore frequency components, transcribe speech, and customize display settings. A Pro version offers ad-free viewing and higher resolution analysis.
- Simultaneous waveform and spectrum display
- Real-time frequency analysis
- Speech transcription
- Channel switching (Mix/L/R)
- Spectrum zooming
- Pitch meter display
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This app supports simultaneous display of the "audio waveform" and the FFT-based "amplitude spectrum" (frequency magnitude) for audio files on your device. (FFT: Fast Fourier Transform) You can check the frequency components around the current playback position while playing the file. [Features] - Add audio files from "Files" or songs from "Music" to a playlist within this app. - Simultaneous display of audio waveform and a real-time spectrum linked to the playback position. - Supports both portrait and landscape orientation. - Channel display switching (Mix / L / R). - Displays the peak level of the spectrum and its frequency. - Supports zooming in the frequency direction of the spectrum. - Pitch meter display. - Supports transcription (iOS 26 ~). The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384). [Spectrum Display Settings] - Frequency Axis: Linear, Log - FFT Size: 1024, 2048, 4096, 8192, 16384 (* 16384 is available in the Pro version) - Window Function: Hann, Hamm, Blkman, None - Octave Analysis: FFT, 1/12, 1/6, 1/3, 1, Calc Method: Max, Ave [Transcription screen] (* Available on iOS 26 or later.) Transcribes speech in the selected audio file. The results are divided into recognized speech segments and displayed in cells with their start times. Tap a cell to move to that position. Swipe left on a cell to copy its text. ================================================ [Note] This app can't add songs of the following formats. - Songs from Apple Music, iCloud, iTunes Match - Songs that are protected by digital copyright (DRM) ================================================
Screenshots
Verdict
The clearest difference is rating: Audio File Analyzer at 5.0 against TB Spectrogram's 4.4. Audio File Analyzer also leads on update cadence (weekly vs every 3 weeks). TB Spectrogram's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support 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
Both are free to download. Audio File Analyzer sells 1 one-off in-app purchase. TB Spectrogram asks for nothing beyond the download.
Audio File Analyzer holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: TB Spectrogram has 50 ratings behind it against 1, so its average is the more settled of the two.
TB Spectrogram ships an update every 3 weeks, Audio File Analyzer weekly. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.
| Parameter | TB Spectrogram | Audio File Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (50 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 71.0% of reviews | — |
| Number of ratings | 50 — better | 1 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 15 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ToneBoosters | Loop-Sessions.LLC. |
Customer experience
TB Spectrogram
Audio File Analyzer
In-app purchases
TB Spectrogram
No in-app purchases
Audio File Analyzer
- Pro (Remove ads, High-Res analysis)$10.99
Questions
Is TB Spectrogram free?
Is Audio File Analyzer free?
Which has better reviews, TB Spectrogram or Audio File Analyzer?
Do TB Spectrogram or Audio File Analyzer have ads?
Which is updated more often, TB Spectrogram or Audio File Analyzer?
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