Chauliodus is a synthesizer that specializes in the bass.
You can play the bass line from built-in sequencer, external MIDI devices, external sequencers, and other iOS applications.
It is possible to change the parameters of the filter by using gyroscope; you can get interesting effects by shaking the iPhone or iPad.
You can also enjoy dubstep wobble bass since LFO rate is synchronized to the tempo, and settable by each step!


Implemented Features:
- OSC x 2
Saw Wave / Square Wave
- SubOSC x 2
Square Wave / Sine Wave
- Glide
- Filter x 1
Manipulate the CutOff Frequency and Resonance by using gyroscope.
- EG x 2
- LFO x 1
- FX
Over Drive
- Real-Time Recording
- 16 steps Pattern Sequencer
- 300 bars Song Sequencer

- Wireless Sync-Start Technology (WIST) is supported.
- AudioCopy is supported.
- CoreMIDI is supported.(MIDI in only)
- Supported background playback.
- Universal support for iPod touch, iPhone, and iPad.

AudioCopy is a trademark and software of Sonoma Wire Works.
WIST is a trademark and software of KORG INC.

What's New

Version 1.4

- iOS8 Support
- Added the ability Inter-App Audio

Ratings and Reviews

No midi out


I felt the app description was very misleading. There is midi in but NO midi out. Thus you cannot control external synths with the rather cool sequencer. The sound is good as mentioned by another reviewer, but I too also found the knobs in particular to be tricky. I basically took off one star for the knobs and one for the lack of midi out which I took a gamble on with the vague description. Overall nice synth, but lacks some important features. Kind of let down on this release.

Nice bass synth

Solomon of Kleptolia

I was hesitant to pick it up because of the price. It's a good synth, though. The layout is decent, but the knob motion is a bit funky. Once you get used to it, it's not bad.
The sounds are good. They can get really deep. The filter is good, too.
Having a built in sequencer is great.
Overall, nice bass synth. I just wish the knobs were more intuitive. Maybe, for others, they are just fine.

Kinda cool


Some deep bass sounds here. Many will be frustrated that there is not keyboard. You can use midi to use the keyboard of another app to control it, but if words like midi channels and sequencer give you a headache maybe this isnt for you. The sequencer is nice, you use sliders to control the pitch instead of keys (with different sliders for note duration and fx). Needs work. Cool name.


Sobal Corporation
39.5 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 S4 dev team


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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