voice bot vs Ruismaker FM
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
Ruismaker FM
Design unique percussion sounds from scratch with a flexible synthesis engine. Create everything from traditional drums to unconventional effects. Offers a standalone Euclidean sequencer for pattern creation and export options.
- FM synthesis engine for percussion
- Create custom drum sounds
- Euclidean sequencer
- AUv3 compatible
- No samples used
- MIDI CC controllable
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Here comes the the crazy twin-sister of Ruismaker, designed for people who want to design their own percussion sounds from scratch. Ruismaker FM's simple, yet flexible synthesis engine lets you create anything from snaredrums, kickdrums and spacy toms to weird and unconventional percussive sounds and effects. Ruismaker FM is a unique drumsynth plugin (i.e. it does not use samples), which is coupled with a creative Euclidean sequencer when run in standalone mode. The plugin is fully AUv3 (Audio Unit) compatible: - Seamless integration with Garageband and other AU hosts - Audio Unit Instrument: making music on iOS doesn't get more convenient - Supports AUv3 Multi-Out in AUM and ApeMatrix - Each sound is modeled using authentic analog and FM algorithms; - Comes with dozens of unique customizable models - Does not use any samples; all sounds are synthesized in realtime, on the fly - Light on the CPU, so you can run lots of Ruismaker FMs simultaneously - Fully automatable parameters (requires host support) and MIDI CC controllable - Has its own preset manager The standalone sequencer is refreshingly different: - Program patterns using Euclidean algorithms - Powerful random feature and mutation probability settings per channel - Syncs with Ableton Link or MIDI Clock - Exports WAV and MIDI - Compatible with Audiobus 3 (including MIDI IN/OUT mode) - CoreMIDI In and Out - AU MIDI output for on-screen pads User manual available on Ruismaker.com
Screenshots
Verdict
The clearest difference is review sentiment: Ruismaker FM at 83% against voice bot's 43%. Ruismaker FM also leads on rating (5.0 vs 4.7) and ratings volume (54 vs 18). voice bot's advantage is chart position (#182 vs unranked). On price, update cadence, 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 Ruismaker FM $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ruismaker FM holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 18 and 54 respectively. Written reviews point the same way: 43% of voice bot's written reviews are positive against 83% of Ruismaker FM's.
voice bot ships an update every 2 months, Ruismaker FM every 5 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | voice bot | Ruismaker FM |
|---|---|---|
| Price | $4.99 | $4.99 |
| Rating | 4.7 (18 ratings) | 5.0 (54 ratings) — better |
| Positive reviews | 42.9% of reviews | 83.3% of reviews — better |
| Number of ratings | 18 | 54 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #182 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 13 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Erik Sigth | Bram Bos |
Customer experience
voice bot
Ruismaker FM
In-app purchases
voice bot
No in-app purchases
Ruismaker FM
No in-app purchases









