Report updated Apr 6, 2026
2XB303 Acid Bass Loop Maker
v4.2Electronic music producers, acid house/techno enthusiasts, and mobile musicians looking for a dedicated, hardware-inspired 303-style bass sequencer.
What Is 2XB303 Acid Bass Loop Maker?
Launched Apr 13, 2018
Updated Jun 2025
What users think iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
What does it look like?
What are the key features?
Real-time transposition, sequence triggering, and instant pattern switching for live performance
Classic 303-style bass synthesis with cut-off, decay, Env-Mod, glide, and accent controls
Integration with Ableton Link, MIDI (master/slave), and Audiobus 3 for studio workflows
Capture and export loops to AudioShare, Audio-Copy, Email, or iTunes
Classic step-based sequencing with randomization, shuffle, and note modification
What do users think? iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
“Recent user voice shows a excited sentiment. Users appreciate sound quality and authentic emulation, but report pattern saving issues and technical/ux friction.”
What Users Love
Great sound. Very much like Rebirth.
One of the best Roland 303 bass line synths I have heard on iOS.
Satisfies the 303 itch.
2XB303 earns its place within the existing arena by offering some unique takes on the theme
Pain Points
wish i could save patterns actually… button has a mind of it’s own
I really hope the developer fixes some of the bugs with the patterns
the metronome does not sync up to the sequencer at all
I am unable to move this app over to my SD card
High confidence · 22 reviews available
How is it ranked?
| Chart | Rank | Change |
|---|---|---|
| Paid | #82 | NEW |
What are the pros and cons?
Pros
- Authentic 303 sound engine highly praised by users
- Advanced live performance features (Live Control)
- Comprehensive studio sync options (Ableton Link, MIDI)
Cons
- Persistent bugs related to pattern saving
- Lower performance and rating on Android platform
- Lack of in-app documentation/onboarding
What is the market outlook?
Growth Opportunities
- Implement AUv3 support for better DAW integration
- Develop a companion drum machine for a complete 'Acid Box' experience
- Improve Android stability to capture a wider user base
Market Threats
- Pure Acid offers a more complete (synth + drums) solution
- Modular apps like Drambo offer more flexibility for advanced users
- Subscription-based DAWs incorporating similar synth engines for 'free'
Who competes with 2XB303 Acid Bass Loop Maker?
The Nemesis
Pure Acid
★4.9 (160)Dmitrij Pavlov
The most direct rival, combining a highly accurate TB-303 emulation with a drum machine for a complete acid house loop-making experience.
The most direct rival, combining a highly accurate TB-303 emulation with a drum machine for a complete acid house loop-making experience.
Contenders
KORG Gadget 3
KORG INC.
Includes the 'Chicago' gadget, a dedicated 303-style tube bass machine within a comprehensive production suite.
Includes the 'Chicago' gadget, a dedicated 303-style tube bass machine within a comprehensive production suite.
Elastic Drums
★4.6 (143)Oliver Greschke (DE)
Focuses on techno and acid rhythms with a built-in synth engine capable of aggressive, modulated basslines.
Focuses on techno and acid rhythms with a built-in synth engine capable of aggressive, modulated basslines.
Hammerhead Companion
★2.0 (83)SRAM LLC
A modern remake of a classic techno drum/bass machine that shares the 2XB303's retro-inspired, performance-oriented workflow.
A modern remake of a classic techno drum/bass machine that shares the 2XB303's retro-inspired, performance-oriented workflow.
Cyclop for iPad
★4.6 (81)Sugar Bytes GmbH
A powerful monophonic bass synthesizer that targets the 'dirty phat' electronic music market with advanced modulation.
A powerful monophonic bass synthesizer that targets the 'dirty phat' electronic music market with advanced modulation.
Peers
A full DAW that includes 'Transistor Bass,' a direct competitor to standalone 303-style apps.
FL Studio Desktop Integration
AUM - Audio Mixer
★4.7 (517)Kymatica AB
The standard host for mobile musicians to route and mix apps like 2XB303 via Audiobus and IAA.
The standard host for mobile musicians to route and mix apps like 2XB303 via Audiobus and IAA.
Patterning 3 : Drum Machine
★4.9 (131)Olympia Noise Co.
An advanced circular sequencer that appeals to the same demographic of creative electronic music loop makers.
An advanced circular sequencer that appeals to the same demographic of creative electronic music loop makers.
New Kids on the Block
Drambo
BeepStreet
A modular groovebox that has rapidly become the go-to for users wanting to build custom 303-style rigs and complex sequences.
A modular groovebox that has rapidly become the go-to for users wanting to build custom 303-style rigs and complex sequences.
BLEASS Monolit
★4.7 (74)BLEASS
A modern, efficient monophonic synth designed for powerful basslines with a highly intuitive mobile interface.
A modern, efficient monophonic synth designed for powerful basslines with a highly intuitive mobile interface.
What are the key takeaways?
2XB303 Acid Bass Loop Maker is a exciting music app that is a paid app. With a 4.2/5 rating from 93 reviews, it excites its users from users. Users particularly appreciate sound quality, though pattern saving issues remains a common concern.
Best for: Electronic music producers, acid house/techno enthusiasts, and mobile musicians looking for a dedicated, hardware-inspired 303-style bass sequencer.
How much does it cost?
Model: paid
The app uses a low-friction paid model on iOS to appeal to serious musicians while offering a free version on Android, likely to drive volume or test market fit on that platform.
iOS Version
4.2
Android Version
2.3.1
Release Date
Apr 13, 2018
iOS Price
$2.99
Android Price
Free
Developer
Rob Wilmot