# Spectrum Analyzer+ Audio FFT vs EngineerTact

The clearest difference is ads: EngineerTact at none against Spectrum Analyzer+ Audio FFT's shown. EngineerTact also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Spectrum Analyzer+ Audio FFT's advantage is update cadence (weekly vs fortnightly). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spectrum Analyzer+ Audio FFT ships an update weekly, EngineerTact fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Spectrum Analyzer+ Audio FFT | EngineerTact |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Ad-supported | — |
| Size | 69 MB | 27 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [Fırat BOZKAYA](https://appshunter.io/developer/1875535506) |

## What reviewers say

### Spectrum Analyzer+ Audio FFT

[App page](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858)

This utility transforms your device into a real-time audio frequency analyzer. It visualizes sound frequencies from 20 Hz to 20 kHz using the microphone, displaying amplitude and peak frequencies. It's designed for musicians, audio engineers, and sound enthusiasts.

**Highlights:** Real-time FFT audio spectrum visualization, Frequency range 20 Hz to 20 kHz, Peak frequency detection, Average dB level per band, Adjustable dB range, Dark theme

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

**In-app purchases:** none


### EngineerTact

[App page](https://appshunter.io/ios/app/engineertact-geo-and-rf/id6772441208)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spectrum Analyzer+ Audio FFT free?

Spectrum Analyzer+ Audio FFT is free to download, with no in-app purchases.

### Is EngineerTact free?

EngineerTact is free to download, with no in-app purchases.

### Do Spectrum Analyzer+ Audio FFT or EngineerTact have ads?

Spectrum Analyzer+ Audio FFT shows ads; EngineerTact does not.

### Which is updated more often, Spectrum Analyzer+ Audio FFT or EngineerTact?

Spectrum Analyzer+ Audio FFT ships an update weekly, and EngineerTact fortnightly. Most recently, Spectrum Analyzer+ Audio FFT was updated on October 25, 2026 and EngineerTact on October 28, 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.*