voice bot vs Matrix Vocoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
voice bot
Transform your voice into a robotic sound using a real-time channel vocoder. Shape sounds with spectral information, play live through the microphone, record loops, and apply various audio effects. Supports MIDI input and can be used standalone or as a plugin.
- Real-time channel vocoder
- Microphone input
- Audio effects (bit crusher, delay, flanger)
- MIDI support (Core MIDI, MPE)
- Standalone and AUv3 plugin
- Loop recording and playback
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Voice bot is a real time channel vocoder. A vocoder takes the spectral information of one sound also known as a modulator and uses it to shape another sound called a carrier. The resulting sound is a bit like a singing robot. Use the microphone to play live or record your own loops for playback, with a few different trigger modes using the keyboard. Further process the sound with a bit and sample crusher, delay and flanger. Play with the built in 25 key dynamic keyboard or using core MIDI with options for MPE. Run voice bot stand alone on iPad and iPhone or as a AUv3 plugin in your favourite host. Connections to other apps are also available through Audiobus and Inter Appp Audio. +++ Microphone input +++ Vocoder with up 128 filter bands +++ Polyphonic carrier source or Mono with glide settings +++ Built in 3 Oscillator carrier source, with saw, square and noise shapes +++ Record or import carrier sample loops +++ Freeze spectrum +++ Bit and sample rate crusher +++ Pitch tracking using Yin algorithm +++ 4 tap stereo delay +++ flanger +++ Multiple sample loop trigger modes +++ 25 key dynamic keyboard +++ Core Midi, Bluetooth Midi, Inter App Audio Midi and AUv3 MIDI +++ Midi CC available for all audio parameters +++ Limited MPE Midi support +++ Modulateble parameters: bands, bit crush, sample crush, delay feedback, flanger mix, vibrator and pitch bend
Matrix Vocoder
Transform your voice into an electronic instrument with this app, simulating classic analog vocoder sounds. It analyzes input signals, performs spectral analysis, and reassembles synthetic speech using filter banks and replacement signals.
- 32 channel filterbank with analog filters
- Stereophonic synthesis with alias-free oscillators
- External carrier input
- Voiced/Unvoiced detection and pitch tracking
- Formant shift
- Patchbay for channel connection
- 16 internal oscillators for choir sounds
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Matrix Vocoder transforms your voice into an electronic instrument! The Vocoder was invented by Homer Dudley in the mid-30's of the last century. Dudley worked at Bell Laboratories, and this is where the first Vocoder took shape. The Matrix Vocoder is designed to properly simulate the classic analog Vocoder sound made famous e.g. by the music of the german band Kraftwerk. At there last world tour they used in fact the PC version of our Matrix Vocoder on stage ! The epic Cylon Robot voice is The basic function of a Vocoder is characterised by an analysis of the input signal, usually speech but other type of inputs can also be very interesting. In a special filter bank, a spectral analysis is performed and signals are developed which follows the amount of spectral energy in each channel. Another part of the analyser tests if there are unvoiced or voiced sounds at any particular time and extracts the pitch of the voiced sounds. The output section of the vocoder consists of a stereophonic synthesis filter bank which assembles the new synthetic speech from the characteristic filter envelopes from the analysis stage together with an external or internal replacement signal. - 32 channel Filterbank with 8-pole Butterworth analog filters - Stereophonic synthesis with analog modelled alias free oscillators. - External carrier possible ( left channel = voice / right channel = carrier ) - Voiced/Unvoiced detection - Pitch tracking - Formant shift - Matrix uses patchbay to connect analysis and synthesis channels. - Pan position and level for each channel. - 16 internal oscillators with unlimited voices for choir like sounds. - Stereo wide panorama parameter for internal generator. - Optional monophonic generator with Glide setting. - Internal noise generator. - Effect AudioUnit and Music Effect AudioUnit - stand alone / Audiobus 3 / IAA
Screenshots
Verdict
The clearest difference is rating: voice bot at 4.7 against Matrix Vocoder's 4.3. voice bot also leads on update cadence (every 2 months vs every 15 months) and price ($4.99 vs $5.99). Matrix Vocoder's advantage is chart position (#181 vs unranked). On review sentiment, 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
voice bot costs $4.99 and Matrix Vocoder $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
voice bot holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 18 and 20 respectively. Written reviews point the same way: 44% of voice bot's written reviews are positive against 42% of Matrix Vocoder's.
voice bot ships an update every 2 months, Matrix Vocoder every 15 months. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.
| Parameter | voice bot | Matrix Vocoder |
|---|---|---|
| Price | $4.99 — better | $5.99 |
| Rating | 4.7 (18 ratings) — better | 4.3 (20 ratings) |
| Positive reviews | 44.4% of reviews — better | 41.7% of reviews |
| Number of ratings | 18 | 20 — better |
| Update frequency | Every 2 months — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #181 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 13 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Erik Sigth | Harry Gohs |
Customer experience
voice bot
Matrix Vocoder
In-app purchases
voice bot
No in-app purchases
Matrix Vocoder
No in-app purchases








