# FFT vs iAnalyzer

The clearest difference is review sentiment: FFT at 86% against iAnalyzer's 41%. iAnalyzer's advantage is price (Free vs $10.99) and rating (4.2 vs 4.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

iAnalyzer is free to download; FFT costs $10.99 up front. FFT sells 1 one-off in-app purchase and iAnalyzer sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

iAnalyzer holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: iAnalyzer has 75 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 86% of FFT's written reviews are positive against 41% of iAnalyzer's, so the app with the better star average is not the one people write more warmly about.

FFT ships an update every 6 months, iAnalyzer every 5 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | FFT | iAnalyzer |
| --- | --- | --- |
| Price | $10.99 | **Free** |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/fft/id298840058/reviews) | **[4.2 (75 ratings)](https://appshunter.io/ios/app/ianalyzer/id335449113/reviews)** |
| Number of ratings | 6 | **75** |
| Positive reviews | **86.1% of reviews** | 40.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 30 MB | 3 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [平 陈](https://appshunter.io/developer/315130423) |

## What reviewers say

### FFT

[App page](https://appshunter.io/ios/app/fft/id298840058)

Analyze audio with high-resolution frequency and amplitude graphs. Features include a signal generator, cursor readouts, and adjustable graph smoothing. Save and export your analysis results.

**Highlights:** High-resolution amplitude vs. frequency graph, Built-in low-distortion signal generator, Adjustable graph smoothing and decay time, Cursor readout for dB and frequency, Save and export analysis graphs and data, Peak tracking for highest frequency identification

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reference Curve Files | $9.99 | one-time |


### 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 |


## Frequently asked questions

### Is FFT free?

FFT costs $10.99, and also offers in-app purchases.

### Is iAnalyzer free?

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

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

iAnalyzer is rated higher. FFT averages 4.0 out of 5 from 6 ratings, while iAnalyzer averages 4.2 from 75 ratings.

### Do FFT or iAnalyzer have ads?

Neither FFT nor iAnalyzer shows ads.

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

FFT ships an update every 6 months, and iAnalyzer every 5 months. Most recently, FFT was updated on September 22, 2026 and iAnalyzer on September 24, 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.*