Audio / Spectrum Analyzer vs AxeModes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio / Spectrum Analyzer
This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.
- Simultaneous waveform and spectrum display
- Configurable display layouts
- Selectable FFT size and averaging
- Frequency weighting options (Flat, dBA, dBC)
- Octave band analysis
- Audio signal and noise generation
- Peak hold and pitch meter
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This RTA app supports simultaneous display of "Audio Waveform", as well as the FFT-based "Amplitude Spectrum" (frequency magnitude) and "Spectrogram" (frequency distribution over time), for audio signals input from a microphone. (FFT: Fast Fourier Transform, RTA: Real Time Analyzer) [Features] - Supports simultaneous display of Waveform / Spectrum / Spectrogram - Supports orientation both portrait and landscape - FFT size - Window function - Spectrum average - Spectrum Tilt - Frequency weighting (Flat, dBA, dBC) - The type of expressing the frequency of Spectrum / Spectrogram (Linear, Log) - Displays the peak level and its frequency of the spectrum - Peak Hold (displays the results of holding past peak values of the spectrum) - Octave Analysis (displays the spectrum divided into octave bands) - Generates the audio signal (Sine, Triangle, Squire, Saw) - Generates the noise signal (white noise, pink noise) - Pitch meter display The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384, 32768, Spectrum Average: 4, 8). [Setting items] 1. Screen structure : Select the display screen configuration. View Num : 1, 2 View Type : - 1 screen : Wave (Waveform) / 1D (Spectrum) / 2D (Spectrogram) - 2 screens : W+1D / W+2D / 1D+2D Layout : Vertical / Horizon 2. Frequency Axis Scale Type : Selectable the type of expressing the X direction (frequency) of Spectrum / Spectrogram. - Linear: Distributed at equal intervals - Log: The intervals increase logarithmically 3-1. FFT size : 1024, 2048, 4096, 8192, 16384, 32768 (* 16384, 32768 is available in the Pro version.) 3-2. Window function : Hanning, Hamming, Blackman, No window 4. Spectrum Average Number of spectrum average for a display of spectrum. 1, 2, 4, 8 (init value: 1) (* 4 and 8 are available in the Pro version.) Higher value will make the spectrum less noisy and more smooth, at the cost of lower time resolution. 5. Spectrum Tilt : Compensates the visual slope of the spectrum around a 1 kHz pivot. -6.0 to +6.0 dB/oct in 0.5 dB/oct steps (0 means no tilt). 6. Frequency Weighting : Selectable frequency weighting. - Flat: No frequency weighting is applied. - dB(A): Frequency response that takes into account human hearing. - dB(C): Relatively flat response. 7. Peak Hold : Displays the results of holding the past maximum values (peak values) of the spectrum. 8. Octave Analysis : Displays the results of classifying the spectrum into octave bands. Division method: - FFT: Spectral display - 1/24, 1/12, 1/6, 1/3, 1 octave: Display divided into octave bands Calc method: - Max: Displays the maximum spectrum value in each band - Average: Displays the average spectrum value in each band 9. Generates the audio signal : Set the audio signal to be generated. - There are 4 types of waveform. (Sine, Triangle, Squire, Saw) - It can set the value of the frequency in 20Hz - 20000Hz. 10. Generates the noise signal : Set the noise signal to be generated. - There are 2 types of noise. (White noise, pink noise) [Other] - Background color: Black, White - WaveForm: Line Color (Green, Yellow, Invert), Line Width (1.0 ~ 6.0 px) - Spectrum: Bar color (Green, Yellow, Color patterns) - Spectrogram: Colormap, Display range (-150 ~ -60 dB), Display time (4 ~ 60 sec), Apply Spectrum Tilt - Bluetooth connection policy selection (disabled, HFP, A2DP). - Scaling of Waveform / Spectrum display in the Y direction (magnification: 0.5 - 2.0). - Scaling of Spectrum / Spectrogram display in the X direction (magnification: 1.0 - 16.0).
AxeModes
This app helps guitarists learn various musical modes and scales from any root note. It features a dynamic fretboard, scale degree visualization, and audio playback for each note, along with chord accompaniment.
- Learn major, minor, and other scale modes
- Dynamic fretboard display
- Color-code and show/hide scale degrees
- Hear individual note sounds
- Play chord accompaniment
- Context-sensitive help
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Learn all the associated Modes of the Major, Melodic Minor, Harmonic Minor, Harmonic Major, Double Harmonic Major, Hexatonic, Pentatonic, and Diminished Scales. Starting from any Root Note. (Hundreds and hundreds of combinations!) Dynamically generated Fretboard. Show between 2 and 22 Frets at a time. Color code any Scale Degree(s). Show or hide any Scale Degree(s). Click on any Note to hear what it sounds like. Play Chord accompaniment for any Scale/Mode/Root combination. Context sensitive help available on every screen.
Screenshots
Verdict
The clearest difference is price: Audio / Spectrum Analyzer at Free against AxeModes's $4.99. Audio / Spectrum Analyzer also leads on ratings volume (1K vs 2). AxeModes's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement 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
Audio / Spectrum Analyzer is free to download; AxeModes costs $4.99 up front. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. AxeModes asks for nothing beyond the download.
AxeModes holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1K ratings behind it against 2, so its average is the more settled of the two.
Audio / Spectrum Analyzer ships an update every 2 weeks, AxeModes every 4 days. The most recent releases landed on September 25, 2026 and June 1, 2026 respectively.
| Parameter | Audio / Spectrum Analyzer | AxeModes |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.6 (1K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 78.6% of reviews | — |
| Number of ratings | 1K — better | 2 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.2 — better |
| Further details — not scored | ||
| Size | 5 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Loop-Sessions.LLC. | Joseph Svantner |
Customer experience
Audio / Spectrum Analyzer
AxeModes
Bugs and requests
Audio / Spectrum Analyzer
Reported bugs
3 issues- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods
Requested features
4 requests- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis
AxeModes
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Audio / Spectrum Analyzer
- Pro (Remove ads, High-Res analysis)$11.49
AxeModes
No in-app purchases
Questions
Is Audio / Spectrum Analyzer free?
Is AxeModes free?
Which has better reviews, Audio / Spectrum Analyzer or AxeModes?
Do Audio / Spectrum Analyzer or AxeModes have ads?
Which is updated more often, Audio / Spectrum Analyzer or AxeModes?
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