Best OB alternatives: apps like OB-Xd AUv3 Synth

9+ similar apps compared and reviewed

4.7 avg rating
0 free apps
Updated November 2026

Looking for something like OB? We've analyzed 9+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to OB

BA-1 - Baby Audio#1

BA-1 - Baby Audio by Baby Audio Inc.

Analog Modeled Synthesizer
Editor's Choice
🎵 Music
4.6😐(34 ratings)
$17.99
BA-1 - Baby Audio screenshot 1
BA-1 - Baby Audio screenshot 2
BA-1 - Baby Audio screenshot 3
BA-1 - Baby Audio screenshot 4

This app brings a vintage analog-modeled synthesizer to your device, offering lush 80s sounds. It can be used standalone or as an AUv3 plugin in music production apps. Explore over 500 presets or generate new sounds with a unique 'Re-Gen' feature.

What We Love

  • 🎶 Beautiful and analogous sound
  • ✨ True analog feel
  • 🎵 Great vintage sound
  • 💡 Innovative features being added
  • 🚀 Excellent developer support
  • 🎶 Perfect for Synthwave/Vaporwave
  • 🤩 Sounds amazing and intuitive
  • 🎶 Wonderful synth
  • ✨ Inspiring to use
  • 🎶 Great character and sweet spots
  • 🎶 Sounds like genuine hardware
  • 🎶 Gorgeous looking and sounding
  • 🎶 Brilliant interpretation of classic synth

Room to Improve

  • 📱 UI too small on iPhone
  • 💻 Desktop version features missing
  • 🐛 Bugs in AUV3 mode (delay controls)
  • 🐛 Arpeggio bugs
  • 🤏 Controls difficult to use
  • 📏 Text too small
  • 🚫 No MIDI learn/mapping
  • 🚫 No MIDI settings
  • 🚫 No sound pack purchase for iOS
  • 🚫 No HOLD button
  • 🚫 No MPE option
  • 🚫 No sequencer
  • 🚫 No FX menu
  • 🚫 No sync option
  • 🤔 Odd controls (battery fader)
  • 🚫 No delete/rename for user presets
  • 🚫 No color picker for presets
  • 🚫 App closes with Logic Pro
  • 🤔 Overdriven screamer cuts through in wrong ways
  • 🤔 Lacking basic functionality
  • 🤔 Premium price for unfinished app
Zeeon synth#2

Zeeon synth by BeepStreet

Analog modeling synthesizer
Strong Contender
🎵 Music
4.8😊(209 ratings)
$14.99In-App Purchases
Zeeon synth screenshot 1
Zeeon synth screenshot 2
Zeeon synth screenshot 3

This app is a virtual analog synthesizer that recreates the sound and feel of classic hardware. It features a detailed circuit-modeling engine, powerful modulation, and multiple filter models for rich, organic soundscapes. Explore a vast array of presets and expand your sonic palette with additional sound banks.

What We Love

  • 🎨 Excellent sound quality
  • 🎹 Intuitive and well-designed interface
  • 🔧 Flexible and deep sound design capabilities
  • 💻 Seamless integration as an AUv3 plugin
  • 🎚️ Smooth and responsive controls

Room to Improve

  • 🐛 Stability issues, crashes on some devices
  • 🔌 Compatibility problems with newer iOS versions
  • 📂 Preset management could be improved
  • 🔀 Lack of MIDI learn and sequencer features
  • 🖥️ UI scaling issues on larger iPad displays
Sunrizer synth#3

Sunrizer synth by BeepStreet

Synthesizer & Audio Unit
Worth Considering
🎵 Music
4.7😊(185 ratings)
$12.99
Sunrizer synth screenshot 1
Sunrizer synth screenshot 2
Sunrizer synth screenshot 3

This virtual analog synthesizer offers a rich, warm sound with advanced features like SuperSaw emulation and morphing parameter control. It integrates seamlessly with MIDI hardware and sequencers, providing a professional-grade sound design experience on iOS.

What We Love

  • 🎨 Exceptional sound quality
  • 👍 Intuitive and easy-to-use interface
  • 🎹 Powerful and flexible synth engine
  • 💡 Excellent preset library
  • 🎚️ Comprehensive modulation and effects
  • 🎶 Versatile for various music genres

Room to Improve

  • 🐛 Occasional crashes and glitches
  • 🔌 Compatibility issues with certain DAWs
  • 🔇 Limited audio export options
  • 🧭 Confusing preset management

More apps like OB

4
ButterSynth
ButterSynth
ButterSynth
by Arto Vaarala
$19.99

This powerful synthesizer app offers a hybrid approach, combining wavetable, FM, and sample-based synthesis. Create unique sounds with a vast sonic range, advanced modulation, and a built-in effects rack. It caters to both experienced sound designers and beginners with extensive presets.

Hybrid 6-oscillator synthesis (wavetable, FM, sample)Built-in wavetable editorFM engine with 4 operators
🎵 Music
(63)
paid
5
SynthMaster One
SynthMaster One
SynthMaster One
Powerful wavetable synth
$0.99
$9.99 | 90% OFF

This powerful wavetable synthesizer app offers an intuitive workflow for creating unique sounds. It features a rich library of wavetables, inspiring presets, and a semi-modular architecture for deep sound design. Easily sync data across devices and integrate with DAWs.

Wavetable synthesisSemi-modular architecture650 factory presets
🎵 Music
(744)
free with in-app purchases
6
iVCS3
iVCS3
iVCS3
Official EMS VCS3 emulator
$19.99

This app is an official emulator of a pioneering analog synthesizer from 1969. It faithfully recreates the original's sound-generating capabilities, including oscillators, filters, and a unique patch board matrix. Explore its vintage interface and powerful sonic potential for music creation and sound design.

Official EMS VCS3 emulatorFaithful recreation of original hardwareMultiple oscillators and LFO
🎵 Music
(208)
paid
7
KQ Dixie Legacy
KQ Dixie Legacy
KQ Dixie Legacy
6-OP FM Synthesizer
$10.99

This app is a 6-operator FM synthesizer inspired by 1980s hardware. It allows users to create rich and complex sounds using frequency modulation, offering extensive parameter control and compatibility with various audio standards.

6-Operator FM Synthesis156 Voice ParametersDX7 Compatibility
🎵 Music
(100)
free with in-app purchases
8
Lagrange - AUv3 Plug-in Synth
Lagrange - AUv3 Plug-in Synth
Lagrange - AUv3 Plug-in Synth
Hybrid Synthesizer
$8.00

This app is a hybrid synthesizer that simplifies sound creation by using oscillator algorithms to manage complex parameters. It focuses on quickly achieving desired sounds by selecting the appropriate oscillator type.

AUv3-compatible synthesizerSimplified sound creationOscillator algorithms
🎵 Music
(57)
paid
9
Tera Pro
Tera Pro
Tera Pro
Modular PolySynth
$6.99

Explore a vast array of sound synthesis methods, from analog emulations to modern digital techniques. Combine modules for unique sonic textures, enhanced by an intelligent interface and realtime visual feedback. Expand your sound palette with additional modules available through in-app purchases.

Multiple synthesis methods (analog, FM, spectral, additive)Physical modeling and wave shapingIntelligent user interface with realtime scopes
🎵 Music
(154)
free with in-app purchases