Comparison

Drambo vs Pure Acid

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Drambo

This app offers a flexible sound design experience, allowing users to build beats, create synthesizers, and process audio with effects. Its innovative modular system simplifies connections and organization, making it suitable for both beginners and experienced musicians. It functions as a standalone application or a plugin within a DAW.

Highlights
  • Modular sound design
  • Intuitive cable-less connections
  • Advanced sequencer
  • Standalone and AUv3 plugin
  • Over 140 modules
  • Polyphonic stereo processing
Features
Currently charting
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"Drambo changes the face of iOS music apps." Cult of Mac Drambo is your all-in-one sound laboratory that adapts to your workflow: build beats as a groovebox, design synths, or transform audio with effects, standalone or inside your favorite DAW. At the core of Drambo is a fresh approach to modular design that makes creating with modules easy, fun, and accessible. Connections happen automatically as you add or move modules, so there are no messy cables to slow you down. The interface adapts to your workflow, generating modulation controls when you need them, and even lets modules contain other modules for perfect organization. You’re always free to override the automatic connections, but most of the time, you can just dive in, experiment, and shape sounds without getting tangled in wires. Use a deep and innovative sequencer to compose patterns and whole tracks, for production or live performance. Go beyond simple looping sequences with parameter locking, conditional step components, parameters automation and powerful scene morphing. Drambo works equally well as a self-contained standalone app or audio unit plugin with audio and MIDI connectivity as an AUV3 instrument, audio effect and MIDI effect. You can use Drambo as • A Complete Studio: Produce entire tracks and perform live in a self-contained, multitrack environment. • An Endless modular playground, that allows you to build, modify and store custom instruments and effects. For instance: build a custom synth, sample and resample, build a Theremin using a gyroscope module, or turn your table into a playable surface, by processing microphone input with physical modelling modules. • An Advanced MIDI Sequencer: Control hardware or AUv3 instruments. Generate custom MIDI CC messages or send modulation signals to physical modular synths via DC-coupled interfaces. • The Ultimate AUv3 Plugin: Load Drambo inside other DAWs as an instrument, audio effect, or MIDI processor. Replace dozens of standard plugins by building your own complex modular delays, reverbs, decimators, or modulators in seconds. • A Unified Audio-Visual Studio (Drambo Visual IAP): Arts united. Step into another realm of modular visual synthesis to build complex generative video art, or seamlessly patch your audio and visual engines together for deeply integrated performances. Features: • Polyphonic, stereo processing and audio-rate modulation. All signals are equal. Up to 16 voices per modular instrument rack. • Unique modular concept: cable-less, drag'n'drop, color coding dynamic interface, automatic connections, and customizable compact, rack views. • Directional flow makes Drambo routing and patching straightforward. Signal flows only left to right, so there are no instant feedback routings in Drambo. Delayed feedback is possible using certain modules. • Simple and clean interface, that scales to every size and device orientation • Over 140 modules available, such as: oscillators, samplers, physical modelling modules, LFOs, envelope generators, filters, audio effects, mixers, MIDI processors, sequencers and math functions. (Includes a macro oscillator based on the famous Eurorack Plaits module, with 24 synth engines) • Custom modular racks that can be nested, with presets at the track, rack, and module level. • Clip launcher / song arrager. • 16-tracks, polyphonic sequencer with parameter locks, automation and step components. 8 dedicated step sequence editor types, piano-roll, powerful automation designer with drawing modes and cubic Bezier curves. • Audio Units hosting ( standalone app only ) • Morph groups: you can morph many parameters using a single slider. • Available as a standalone app, AUv3 instrument, effect and MIDI effect. • MIDI and Ableton Link support Drambo is all about control. Control things that other apps don’t even give you access to. Visit the BeepStreet page for help and tutorials, and Patchstorage for community content.

About

Pure Acid

This app is a high-quality bassline synthesizer and drum machine inspired by classic 80s hardware. It offers a retro analog sound with modern features for fast and fun music creation. Explore various genres with factory presets and create unique rhythms and basslines.

Highlights
  • AUv3, Ableton Link, AudioBus, IAA support
  • Classic bassline waveforms (Saw, Pulse)
  • Distortion and filter LFO effects
  • 32-step sequencer with pattern editing
  • 16 independent drum parts with customizable sounds
  • Realtime master effects with XY-pad
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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

Screenshots

Drambo4 screens
Pure Acid4 screens

Verdict

The call

The clearest difference is price: Pure Acid at $14.99 against Drambo's $24.99. Pure Acid also leads on iOS requirement (13.0 vs 15.6). Drambo's advantage is chart position (#175 vs unranked). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Drambo costs $24.99 and Pure Acid $14.99 up front. Drambo sells 5 one-off in-app purchases and Pure Acid sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Drambo against 4.9 for Pure Acid. Both are backed by a comparable volume of ratings — 332 and 170 respectively. Written reviews are what separate them: 87% of Drambo's written reviews are positive against 94% of Pure Acid's.

UpkeepUpdate frequency

Drambo ships an update every 5 weeks, Pure Acid every 3 weeks. Both last shipped on November 11, 2026.

Scorecard3 real differences · 8 level
Drambo versus Pure Acid: the parameters behind the verdict, then further details
ParameterDramboPure Acid
Price$24.99$14.99 — better
Rating4.8 (332 ratings)4.9 (170 ratings) — better
Positive reviews86.7% of reviews94.1% of reviews — better
Number of ratings332 — better170
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#175 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size149 MB44 MB
Age rating4+4+
DeveloperBeepStreetDmitrij Pavlov

Customer experience

Drambo

All ratings330 ratings
Positive94.8%
Neutral2.1%
Negative3.0%
Written reviews226 reviews
Positive86.7%
Neutral3.1%
Negative10.2%

Pure Acid

All ratings167 ratings
Positive97.0%
Neutral1.8%
Negative1.2%
Written reviews152 reviews
Positive94.1%
Neutral2.6%
Negative3.3%

User reviews

Drambo

From 332 App Store ratings

What we love

  • 🚀 Incredibly powerful and flexible
  • 🎨 Endless creative possibilities
  • 👍 Intuitive and well-designed interface
  • 🔧 Modular synth capabilities
  • 🎛️ Excellent sequencing and groove box features

Room to improve

  • 🐛 Occasional crashes and stability issues
  • 🔒 Limited undo/redo functionality
  • 🔊 Audio export issues (pitch/tempo problems)
  • 🔀 Lack of dedicated audio track support

Pure Acid

From 170 App Store ratings

What we love

  • 🚀 Powerful and feature-rich
  • 👍 Intuitive and easy to use
  • 🎶 Excellent sound quality
  • 🎛️ Great sequencing and programming capabilities
  • 🔌 Seamless integration with other apps and hardware

Room to improve

  • 🐛 Occasional audio cutoff or sync issues
  • 🔍 Lack of detailed documentation or tutorials
  • 🔀 Limitations in pattern length and drum sequencing

Bugs and requests

Drambo

Reported bugs

3 issues
  • Audio cutting out after 5 minutes of use
  • Presets and patches not loading properly
  • Incompatibility with certain iOS devices

Requested features

5 requests
  • Stem/track export functionality
  • MIDI CC learn and external control
  • Ableton Link support
  • More parameter control and modulation options
  • Improved piano roll and sequencing tools

Pure Acid

Reported bugs

2 issues
  • GUI scaling issues on smaller devices
  • Crashes or freezes on certain devices

Requested features

4 requests
  • Ability to import MIDI files
  • Standalone drum machine mode
  • Expanded drum sample library
  • Knob/parameter automation recording

In-app purchases

5 purchases

Drambo

One-time5
  • Granular extension$4.99
  • Waves extension$4.99
  • Formants extension$4.99
Show 2 more
  • DSP extensions 1$4.99
  • Visual extension$14.99
2 purchases

Pure Acid

One-time2
  • Ukrainian style color scheme$4.99
  • Ukrainian style app icon$4.99

Questions

Is Drambo free?
Drambo costs $24.99, and also offers in-app purchases.
Is Pure Acid free?
Pure Acid costs $14.99, and also offers in-app purchases.
Which has better reviews, Drambo or Pure Acid?
Pure Acid is rated higher. Drambo averages 4.8 out of 5 from 332 ratings, while Pure Acid averages 4.9 from 170 ratings.
Do Drambo or Pure Acid have ads?
Neither Drambo nor Pure Acid shows ads.
Which is updated more often, Drambo or Pure Acid?
Drambo ships an update every 5 weeks, and Pure Acid every 3 weeks. Most recently, Drambo was updated on November 11, 2026 and Pure Acid on November 11, 2026.

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