# iAnalyzer vs FFT Plot

The clearest difference is price: iAnalyzer at Free against FFT Plot's $9.99. iAnalyzer also leads on update cadence (every 5 months vs every 17 months). FFT Plot's advantage is review sentiment (84% vs 41%) and rating (4.8 vs 4.2). On ratings volume, ads and device support there is nothing between them.

iAnalyzer is free to download; FFT Plot costs $9.99 up front. iAnalyzer sells 2 in-app purchases, starting at $4.99 per month. FFT Plot asks for nothing beyond the download.

FFT Plot holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 75 and 90 respectively. Written reviews point the same way: 41% of iAnalyzer's written reviews are positive against 84% of FFT Plot's.

iAnalyzer ships an update every 5 months, FFT Plot every 17 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | iAnalyzer | FFT Plot |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.2 (75 ratings)](https://appshunter.io/ios/app/ianalyzer/id335449113/reviews) | **[4.8 (90 ratings)](https://appshunter.io/ios/app/fft-plot/id569468015/reviews)** |
| Number of ratings | 75 | **90** |
| Positive reviews | 40.5% of reviews | **84.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 17 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 7 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [平 陈](https://appshunter.io/developer/315130423) | [ONYX Apps](https://appshunter.io/developer/356553882) |

## What reviewers say

### iAnalyzer

[App page](https://appshunter.io/ios/app/ianalyzer/id335449113)

This professional audio analysis software uses FFT to examine sound signals on iOS devices. It offers real-time spectrum analysis, precise peak frequency computation, and a unique instrument tuner function. Ideal for musicians and sound engineers seeking detailed audio insights.

**Highlights:** Real-time FFT spectrum analysis, Octave and 1/3 Octave display, High precision peak frequency computation, Instrument tuner function, Adjustable playback speed, VGA output support, Waveform display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iAnalyzer Pro (1 Month) | $4.99 | per month |
| iAnalyzer Pro (1 Year) | $29.99 | per year |


### FFT Plot

[App page](https://appshunter.io/ios/app/fft-plot/id569468015)

This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.

**Highlights:** Real-time audio analysis, Frequency detection, Averaging options, Window functions, Linear and logarithmic scales, Weighting options, Draggable cursors

**In-app purchases:** none


## Frequently asked questions

### Is iAnalyzer free?

iAnalyzer is free to download, with in-app purchases available.

### Is FFT Plot free?

FFT Plot costs $9.99, with no in-app purchases.

### Which has better reviews, iAnalyzer or FFT Plot?

FFT Plot is rated higher. iAnalyzer averages 4.2 out of 5 from 75 ratings, while FFT Plot averages 4.8 from 90 ratings.

### Do iAnalyzer or FFT Plot have ads?

Neither iAnalyzer nor FFT Plot shows ads.

### Which is updated more often, iAnalyzer or FFT Plot?

iAnalyzer ships an update every 5 months, and FFT Plot every 17 months. Most recently, iAnalyzer was updated on September 24, 2026 and FFT Plot on September 23, 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.*