Pure Acid

Pure Acid is a top quality bassline synthesizer and drum machine in one app! Inspired by classic hardware bassline synthesizers and rhythm machines, which changed musical world back in 80's, like the legendary TB-303 synthesizer, TR-808 / 707 / 909 rhythm boxes and their numerous replicas, Pure Acid is designed to bring back the feeling of retro analog gear in every detail in terms of sound, as well as to provide new functions previously unavailable in the original devices to make your music creation workflow fast and fun! A large number of factory preset patterns will immerse you into an exciting world of Acid House, Techno, Hardcore and Big Beat music genres, which will inspire you to create your own basslines and rhythms for your compositions!

You can use Pure Acid app as a ready-to-go realtime musical instrument (groove box) in your jam sessions together with Ableton Link to synchronize it with the rest of your music gear. Its bassline editing system and randomization options will be handy to create unique groovy basslines easily. Realtime master effects with XY-pad controls can add expression to your live performance. You can also use Pure Acid with AudioBus, AUM or other IAA-supporting apps to create complex and interesting sound setups.

Features:

• supports AUv3, Ableton Link, AudioBus, Inter-App Audio, Core Midi, Virtual Midi In/Out, Bluetooth Midi
• AudioBus state saving support
• 64-bit sound engine
• Midi Learn
• Export to midi file
• includes Multiple Output AUv3 plugin with 6 audio output busses

Bassline Section:

• 2 classic bassline waveforms: Saw and Pulse
• classic knobs: Tune, Cutoff, Resonance, Env Mod, Decay and Accent
• Distortion effect with amount, HPF and Boost knobs
• filter LFO with rate and depth knobs

Sequencer Section:

• up to 12 bassline patterns can be stored in one preset
• up to 32 steps per each bassline pattern
• patterns can be chained together to create more complex patterns
• pattern Tempo and Swing parameters
• Gate parameter, which allows you to adjust bass note lengths
• Pattern Editor allows you to copy, transpose patterns, shift notes left/right, insert or delete a note, variate (randomize all note properties expect pitch), shuffle (randomize notes order only), reverse and compose patterns using Bassline Composer function
• onscreen keyboard allows you to enter bassline notes in a comfortable way. You can also record basslines in realtime.

Drums Section:

• 16 independent drum parts
• 35 different classic drum sounds with ability to tune your own drum kit
• each drum part sound has its own parameters: Tune, Decay, Attack/Snap/Color, FX A send, FX B send, Boost, Pan, Level
• up to 12 drum patterns and 4 drum fill patterns per preset
• 16 steps per each drum pattern, with ability to add 16 "backbeat" steps between main steps (32 steps per drum pattern in total)
• patterns can be chained together to create more complex patterns
• Swing and Flam features
• Total Accent part with adjustable total accent value can give you ability to "highlight" specific steps in your drum pattern
• new: step conditions for drum steps

Mixer Section:

• 2 mixer channels: Bassline and Drums
• Drive effect for each channel
• 2 send effect pedals: FX A and FX B
• 14 send effect types
• send effect can be routed to either master output, MFX or another send effect (FX A -> FX B), which allows to chain several effects one after another
• MFX pedal with 22 effect types to choose from
• FX A and FX B send amount knobs for each mixer channel
• XY-pad on each effect pedal to control their parameters
• Master Limiter effect to prevent sound clipping

and more:

• Unlimited number of user presets
• 84 factory presets
• Audio export to wav file (16, 24 or 32 bit)
• Preset / Bank Share function
• Selectable UI color schemes with ability to adjust colors manually
• Can work either as a standalone app, or as AUv3 audio unit plugin
• Designed for both iPad and iPhone

In the standalone app:

• improved compatibility with new iPad display resolutions and aspect ratios. Now the app's interface adjusts to any screen size automatically;
• implemented portrait orientation mode support (for iPad) to comply with the new iPadOS 26 requirements. In the portrait mode, all 4 module racks are visible simultaneously on the screen together with the onscreen keyboard;
• graphics refresh rate increased to 120 FPS (where available);
• minor bug fixes.