# harpSampler vs FFT AUv3 Visualizer

The clearest difference is rating: FFT AUv3 Visualizer at 5.0 against harpSampler's 3.0. FFT AUv3 Visualizer also leads on update cadence (every 8 months vs every 37 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

harpSampler costs $0.99 and FFT AUv3 Visualizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FFT AUv3 Visualizer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

harpSampler ships an update every 37 months, FFT AUv3 Visualizer every 8 months. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | harpSampler | FFT AUv3 Visualizer |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/harpsampler/id539331190/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fft-auv3-visualizer/id6746331702/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 8 months** |
| Monetization | Paid | Paid |
| Size | 17 MB | 12 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gianluca Natalini](https://appshunter.io/developer/348380792) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### harpSampler

[App page](https://appshunter.io/ios/app/harpsampler/id539331190)

Transform your device into a multi-touch harp by importing your own sounds or using the built-in sampler. Create unique musical instruments and special effects with adjustable octaves, scales, and chords.

**Highlights:** Import custom sounds for instrument generation, Automatic 8-octave harp creation, Multi-touch interface for live performance, Adjustable scales and chords, Real-time sound bending and start position control, Record live performances

**Features:** macOS Compatibility

**In-app purchases:** none


### FFT AUv3 Visualizer

[App page](https://appshunter.io/ios/app/fft-auv3-visualizer/id6746331702)

This real-time spectral analyzer visualizes audio into spectrograms with high precision. It offers advanced features like mel-scale mapping and intelligent color coding to help musicians and audio engineers analyze sound frequencies for mixing, mastering, and sound design.

**Highlights:** Real-time spectral analysis, High-resolution 4096-sample FFT, Mel-scale frequency mapping, 90dB dynamic range with intelligent color mapping, Resizable interface, 60Hz display with 75% overlap

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is harpSampler free?

harpSampler costs $0.99, with no in-app purchases.

### Is FFT AUv3 Visualizer free?

FFT AUv3 Visualizer costs $0.99, with no in-app purchases.

### Which has better reviews, harpSampler or FFT AUv3 Visualizer?

FFT AUv3 Visualizer is rated higher. harpSampler averages 3.0 out of 5 from 2 ratings, while FFT AUv3 Visualizer averages 5.0 from 1 ratings.

### Do harpSampler or FFT AUv3 Visualizer have ads?

Neither harpSampler nor FFT AUv3 Visualizer shows ads.

### Which is updated more often, harpSampler or FFT AUv3 Visualizer?

harpSampler ships an update every 37 months, and FFT AUv3 Visualizer every 8 months. Most recently, harpSampler was updated on October 20, 2026 and FFT AUv3 Visualizer on October 18, 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.*