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By Markus Waldboth

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★ BassLine was used by Gorillaz on their album "The Fall"!

NEW! Play and tweak BassLine from external MIDI keyboards, sequencers, hardware controllers, or other iOS apps like Little MIDI Machine and Genome MIDI Sequencer!

Turn your iPhone, iPod touch, or iPad into a Bass Synthesizer and start rolling your own grooves with the unique sound of the legendary TB-303, the trademark of Acid House that influenced many different styles of electronic music!

BassLine is a virtual analogue bass synthesizer with built-in step sequencer and on-board effects. Its unique low-pass filter allows to produce the well known high-resonance filter sweeps, that are typical for vintage synths like the legendary TB-303.

Feature List:

• Monophonic synthesis engine including a never self-oscillating, cascaded low-pass filter
• Four oscillator waveforms (sawtooth, square, pulse, and saw/triangle)
• Low frequency oscillator (LFO) for cutoff modulation

• Overdrive with tube-like distortion characteristic

• Tape delay effect with tempo-synchronous delay times

• Individual pattern lengths & downbeat-aligned switches
• Pattern randomizer
• Tap tempo

• Accelerometer-driven cutoff frequency control

• MIDI Clock sync
• MIDI Note input
• MIDI Controller input

• Gated sequencer mode with real-time pattern transposition

• Background Audio with Auto Standby

• Audiobus support (see for more information).

• Comprehensive MIDI routing capabilities:
- Connect to virtual MIDI ports provided by apps running in the background
- Connect to nearby iPads, iPhones, Mac OS X and Windows computers
- Connect to compatible MIDI hardware attached to the dock connector

• Wireless MIDI via Bluetooth or Wi-Fi WLAN using Apple’s built-in CoreMIDI network driver
• Wired MIDI using the USB Camera Connection Kit for iPad with class-compliant USB hardware
• Wired MIDI using a Core MIDI interface built for iOS (iRig MIDI, ...)

• Wireless Sync-Start via Korg's WIST

• OMAC Fast App Switching support

• WAVE file export and extensive sharing options:
- "Open In..."
- Pasteboard (compatible with BeatMaker and Garageband for iPhone/iPad)
- AudioCopy by Sonoma Wire Works
- E-Mail
- iTunes File Sharing

• Including twenty Acid basslines by DJ/producer Myagi (

• Universal support for iPod touch, iPhone and iPad

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

What's New in Version 4.2

- Audiobus support. See for more information.


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2

Customer Reviews

303 Acid And Beyond

BassLine is the first App / Module / Plug In / software that's not made me miss my actual 303. The programming is close enough to the 303's to make an effortless jump between the two and the X/Y controls over Frequency and Envelope are utterly fantastic. This is a very usable app and super fun to work with. My only complaint is that the app itself can't record said X/Y parameter manipulations (which would be so so wonderful) But BassLine does have Audiobus so with an extra step or two we can record all the manual tweaking we want - just like with a 303. Fantastic App.

Bass-ic needs filled...

This app is perfect for coming up with quick, cool bass lines. Running it through Audiobus with effects and recording helps to set up your bottom end and it is simple enough.

Fun, playable, faithful 303 Emulation

Versatile, this app is not. But then neither was the 303, the backbone sound of acid house and early techno. If you want variety look elsewhere.

View In iTunes
This app is designed for both iPhone and iPad
  • $3.99
  • Category: Music
  • Updated: Jan 04, 2013
  • Version: 4.2
  • Size: 3.0 MB
  • Language: English
  • Seller: Markus Waldboth

Compatibility: Requires iOS 4.2 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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