harpSampler vs FFT AUv3 Visualizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
harpSampler
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.
- 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
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"harpSampler" transforms your device into a professional multi-touch harp with sound sampler. Simply create your own sound sample (an "A" or "LA" note for musical instrument sound or any note for special sounds or special effects): - using the "REC" button of harpSampler (uses the internal microphone of the device to record the sound sample for the harp) - importing the sound sample that you have created with a wave editor for MAC or PC in your device through iTunes synchronization - using copy / paste for the audio file you have created using the technology "iTunes File Sharing" Once imported the sound sample, harpSampler tool will automatically create the complete "Harp" (with 8 octaves). At which point you can play your harp (with the sound created by you or using the default "HARP" sound included in the application bundle), or entertain your friends with a scale of special effects (harp style). The software is able to read all files / audio samples that are compatible with your portable device (.wav, .mp3, .m4a, .caf, etc ...), you can then create your sound (you only need one audio file) using standard wave editor for Mac or PC, add reverb, chorus, special effects (you can manipulate the sound as you wish), save it in the file format that you prefer and use harpSampler to automatically create the complete musical instrument, to be played like an harp. Using the "SAMPLE START POSITION" control you can choose the exact play start position of the sound sample ("wave cut"). Using the "REC" button you can record your live performance or record a new sound sample to be assigned to the musical instrument. Using the different scales (You can choose the scale You want from the "SCALE" menu), you do not need necessarily to be an expert musician to play some beautiful scales with your harp. Also, using the "chords" control (C, D, E, F, G, A, B) you can choose the chord for your harp or scale ("chords" work together with the "scale") . With harpSampler You can create the harp of your dreams or, in general, you can create any kind of musical instrument, or special effects generator and play it like an harp! Features: - Import any sound, and automatic generation of the musical instrument (8 octaves) - Storing infinite sounds using the archive of sound samples "Samples Archive" of harpSampler - Harp multi-touch for live music performances - Check for increase / decrease the eighth harp used in real time - "Bending" control to change the sound of the device in real time - "Sample Start Position" control: you can remove the initial part of a sample (eg. silence), specifying the play start time of the sample ("wave cut" feature) - "STOP" button to immediately stop the harp sound - Harp with multiple voices (up to 96 voices) - Default "HARP" sound provided with the app - Ability to "record" musical patterns during the live performance: start the recording (pressing the "REC" button), harpSampler will record an audio file of the music you are playing with the harp musical instrument (press a cable of the harp to play the recorded audio of Your live performance) - "CHORDS" control - Multiple scales selectable from the "SCALE" menu - Virtual keyboard, pressing the "V. KEYB.": disable the automatic scale and enable the virtual keyboard on the cables of the harp *** PROMOTIONAL MESSAGE: If You want to play the "Golden Gate Bridge" like a giant harp, using the sound samples of the Golden Gate Bridge itself, You can download the app "Play The Golden Gate Bridge". The sound samples of the "Golden Gate Bridge" provided with the "Play The Golden Gate Bridge" app were sampled by the "San Francisco Synthesizer Ensemble" company. Amazing sounds… Try it !!! ***
FFT AUv3 Visualizer
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.
- 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
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FFT is a real-time spectral analyzer designed specifically for musicians, producers, and audio engineers who demand precision in their frequency domain analysis. This plugin transforms your audio into visual spectrogram, featuring a high-resolution 4096-sample FFT engine that captures every nuance of your sound. With its advanced Blackman-Harris windowing and mel-scale frequency mapping, FFT provides perceptually accurate frequency representation that mirrors how your ears actually hear music. The plugin offers 90dB dynamic range with intelligent color mapping that highlights different frequency bands—from deep blues for sub-bass through vibrant greens for midrange to warm reds for sparkling highs. Whether you're mixing, mastering, sound designing, or analyzing acoustic spaces, FFT's real-time 60Hz display with 75% overlap ensures smooth, responsive visualization that helps you make critical EQ decisions, identify problematic frequencies, monitor stereo imaging, and understand the spectral content of your tracks with scientific precision. The resizable interface adapts to your workflow, making it an indispensable tool for any serious audio professional seeking to visualize and understand their sound in the frequency domain.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | harpSampler | FFT AUv3 Visualizer |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 37 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | DiscoDSP LLC |
Customer experience
harpSampler
FFT AUv3 Visualizer
In-app purchases
harpSampler
No in-app purchases
FFT AUv3 Visualizer
No in-app purchases
Questions
Is harpSampler free?
Is FFT AUv3 Visualizer free?
Which has better reviews, harpSampler or FFT AUv3 Visualizer?
Do harpSampler or FFT AUv3 Visualizer have ads?
Which is updated more often, harpSampler or FFT AUv3 Visualizer?
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