DeeACID

Name: DeeACID
Price: 50 USD
Author: Dotec-Audio

by Dotec-Audio · Synth · Acid bass synth

Not rated yet

DeeACID is a monophonic acid bass synth for acid techno, with a ladder low-pass filter, detune, sub-oscillator, drive and a phrase generator.

Generated phrases can be dragged into a DAW MIDI track, and it costs $50.

Best for: Bass, Keys & Synths. Genres: Electronic & EDM.

Keywords: basses, AUv3/iOS, analog, classic, hardware emulation, 80s, 90s, aggressive, fat, harsh, monophonic, resizable UI, subtractive, thick, vintage, visual feedback.

What it does

DeeACID is a bass synth built for one job, acid techno. The developer aimed to make it "thicker and easier to handle" than a typical acid bass, so overdrive levels are adjusted automatically and the controls are kept to the essentials.

Oscillators: mix sawtooth and square waves, with detune, a sub-oscillator and drive; version 2.1.0 improved the oscillator.
Filters: a fat ladder low-pass filter, plus a Type II filter added in version 2.0.0.
DIABLO switch: gives the filter a harsher, "evil" character for more aggressive lines.
Accent and slide: the classic acid accent and slide behaviour, with an adjustable release.
Phrase generator: creates an endless supply of acid phrases in sync with the DAW tempo; drag a phrase you like onto a MIDI track.
Controls: Learn buttons for quick MIDI controller mapping and a resizable interface.
Visualizer: a 90s-style "ACID mega demo" animation, purely for fun.

The current version is 2.1.0 (11 May 2026). The free demo inserts one second of silence every 30 seconds.

Source: Dotec-Audio product page

When to use it

DeeACID is the quicker route to an acid line: load it, let the phrase generator suggest patterns, and drag the best one into the DAW. Compared with Serum 2, Vital or Diva it is far narrower, with no wavetables, modulation matrix or polyphonic patches, but you don't have to build a 303-style patch from scratch. It is also less of a faithful TB-303 clone than dedicated emulations; iOS users on the Loopy Pro forum found it has less functionality and a less authentic 303 character than PureAcid. In price it sits between free acid synths and full commercial instruments.

Best for: acid basslines, quick pattern ideas and squelchy hooks for techno and house.
Genres: acid techno, acid house, techno and electro.
Look elsewhere if: you want a general-purpose synth (Vital or Diva) or a strict TB-303 recreation with a step sequencer.
Tip: use the phrase generator as an idea farm: audition phrases in tempo, then drag the keepers to MIDI and edit the notes.

What producers say

There are few reviews; iOS users on the Loopy Pro forum found it fun and fast but less deep than dedicated 303 clones.

Loopy Pro forum (iOS version) users called it "a really fast and fun way to farm acid hooks" and liked the sound and "funky UI."
Criticisms: no scale selector (only a key setting), and one 303 purist rated its 303 character well below PureAcid's; the iOS version also lacks drag-and-drop and direct MIDI out.