2XB303 Acid Bass Loop Maker

2XB303 Acid Bass Loop Maker

Electro Acid Synth Sequencer

58 ratings
42 reviews
#151 in paid Music
📊 Productivity
🎵 Music
$3.99

Details

Released
July 29, 2018
Updated
June 9, 2025

Features

2XB303 Acid Bass Loop Maker screenshot #1 for iPhone
2XB303 Acid Bass Loop Maker screenshot #2 for iPhone
2XB303 Acid Bass Loop Maker screenshot #3 for iPhone
2XB303 Acid Bass Loop Maker screenshot #4 for iPhone
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About

Create electro melodies and acid techno basslines with this creative bass synth sequencer. Features live control for triggering sequences and synth pads, random generation, and extensive sound shaping options. Export your audio loops easily.

✓Bass synth sequencer
✓Live control for sequences and pads
✓Audio loop recording and export
✓Random sequence generation
✓Tweakable synth parameters
✓MIDI and Ableton Link syncing
✓Global effects: Overdrive, Compression, Echo
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What users say about 2XB303 Acid Bass Loop Maker

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What's New in 2XB303 Acid Bass Loop Maker

4.2

June 9, 2025

Fixed a bug introduced in last version that messed up the loop recording on some phones that also messed up the UI connections. (Sorry bout that!) Also, as this app was released before Apple's IOS files app was introduced, it used an old system of iTunes file sharing. That has now been removed and instead your loops can be all saved in 2XB303 iOS Files folder, also incrementally the Export section . You can keep them stored in there for later if you have a nice sounding loop you want to keep. You can access them in iOS Files to copy , paste , rename etc. Also fixed some other bugs

More

Charts

Top Paid

📉 151-31

Music

This app dropped -31 positions in Music chart.

Last updated on November 7, 2026.

User reviews

Yeah, but…

MIDI. How hard is MIDI output? I guess the sounds are alright and you can export audio, but random bass lines that you can’t use your own synths/sounds with? That’s just stupid, and missing the point entirely.

Filthy

Love it

“ACCIIIDD”

Fun very good for the price, it’s peanuts after-all but the mixer needs more volume

Great app

Honestly just the best

Energy Dance

Very nice app for the price got lot of potential

Developer apps

User experience

🐞

Reported Bugs

8 issues

No sound on some devices

Bug

Metronome not syncing

Bug

Pattern saving issues

Bug

Crashes in AUM

Bug

App crashes on startup (iPhone X)

Bug

Doesn't connect with AUX/Audiobus

Bug

Instability and crashes

Bug

MIDI clock send out issues

Bug
✨

Requested Features

14 requests

MIDI output for own synths

Feature

More volume on mixer

Feature

Tutorials for controls

Feature

Save global modifications

Feature

Improved sequencer for easier note entry

Feature

Better use of screen space

Feature

MIDI learn for controls

Feature

More organic sounds

Feature

More instruction/manual

Feature

AUv3 support

Feature

Better DAW support

Feature

Manual for saving patterns

Feature

Tempo adjust in smaller increments

Feature

Redesign app icon

Feature

FAQ

What kind of music can I create with this app?

This app is designed for creating electro melodies, dirty phat & funky pure acid techno 303 style basslines, and other electronic music patterns. It's suitable for genres like electro, house, techno, drum and bass, and general EDM.

What are the key features for live performance?

The app includes a LIVE CONTROL feature that allows you to trigger and transpose both sequences and a new synth pad layer in real-time. You can also instantly switch to saved sequences while playing, making it great for building live tracks.

How can I export my creations?

You can easily capture and export your audio loops to various destinations including AudioShare, Audio-Copy, Email, or the iTunes Shared Folder. The app also supports Audiobus 3 routing, Ableton Link, and IAA (Inter App Audio) for seamless integration with other music apps.

Is this app compatible with other music software?

Yes, the app supports syncing with other applications via Ableton Link for precise timing without dedicated syncing. It also supports MIDI sync with external, virtual, or Audiobus connections, allowing it to act as either a master or slave device.

What sound shaping options are available?

You can extensively tweak parameters like cut-off, decay, Env-Mod, glide, and accent for that classic acid growl. The synth waves have optional harmonic versions, noise, LFO control, glide speed, and PHAT/BASS settings, along with great effects like overdrive, compression, and echo.