Comparison

DrumComputer vs Audulus 4

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

Head to head
About

DrumComputer

This app is a powerful tool for creating synthetic drum sounds and beats. It combines advanced synthesis techniques with flexible modulation and sequencing capabilities, offering intelligent randomizers and pattern editing for endless creative possibilities. Users can design unique drum hits, build complex patterns, and mix them for professional-sounding results.

Highlights
  • 8 layered sound engines
  • Flexible modulation matrix
  • Intelligent sound randomizers
  • 16-step sequencer with pattern generation
  • Auto and manual remixing/fills
  • AUv3 plugin and standalone operation
  • MIDI file export
Read full description

DrumComputer is the new specialist for synthetic drums, combining classic and modern synthesis with flexible modulations and luxurious sequencing. Intelligent randomizers, elegant pattern editing and import of your own samples are just a few of the mind blowing possibilities. Enjoy new drums everyday and get inspired by all the creativity that DrumComputer sets free. Just because, there still is all the unheard of... More than 400 global presets and 450 engine presets are shipping with DrumComputer. Add the Sound Randomizer and you have an unlimited source of cool sounds. ::FEATURES:: • 8 Sound Engines, each one layering a Resonator, Wavetable/Analogue, Resynth and Sampler • Filter, Compressor, Overdrive and 2 kinds of Send Reverbs: Room and Hall • 2x Env/LFO, plus Synth-Engine-Modulators, Sequencer-Modulators, ModMatrix • Intelligent Randomizers for endless Drum Sounds • 16 Step Sequencer and Pattern Generator, Probability, Rolls, +/- Step Delay, Swing, Humanize • Auto- und Manual Remixing/Fills • Easy Keyboard Mapping for Patterns, Mutes and Engine Triggers • Keyzones for Rolls, Pitch and Modulation • AUv3 plug-in with MIDI FX support & Standalone • Audio Bounce • MIDI File Export • Multiple Audio/MIDI Outputs • Virtual, Network, External & Bluetooth MIDI • Ableton Link • MIDI Learn & Host Automation • Preset iCloud Sync • Preset Share ••• Sound Engines ••• 8 individual 3-layer synth engines to design, shape and sculpt powerful drum hits. Depth modulation area with envelopes, LFOs, and a complex modulation matrix to change most parameters using a wide array of sources. Finest noise table conversion technology, followed by a filter, distortion and side chain compressor. ••• Sequencer ••• Enjoy smart randomization to create patterns that feel natural and organic and add some feeling to the pattern with swing and 'humanization'. Move various parameters along to match the notes, such as velocity, pitch, decay, probability, roll and offset. ••• Kit Page ••• Bring all the individual sounds together in one place, select new sound presets or even randomly generate new sounds based on various sound type profiles and give your kit some character, punch and an analogue feel! ••• Mix ••• With Volume, Mute, Solo, Pan as well as two reverb return channels you can send any of your sounds to at any time and also assign the mixer parameters as modulation destinations. The Room reverb gives you a nice familiar space, letting you glue together multiple drum sounds, while the Hall reverb gives a massive space you can use either as a utility, or as way to fire your sounds off into the cosmos! ••• Mapping ••• Create up to 16 individual patterns (from scratch, or using the easy copy/paste function), and chain these together into a sequence, up to 16 patterns long. Use your MIDI keyboard or controller to send values that quickly and seamlessly switch between patterns on the fly. Quickly remove and add the individual hits, trigger rolls of different speeds, or even have them as pitch modifiers. ••• Auto- and Manual Remixing/Fills ••• Mash up your patterns with one simple parameter and produce all sorts of automatic and random edits to your sound. Add creative fills and variations to your loop to keep it constantly moving with fresh ideas - great for jamming or to prevent audio stagnation. ••• Wavetable/Resynth Import & Sampler ••• Import your own audiofiles to create Wavetables. Resynthesize Hihats, Snares, even Chords with the Resynth import feature or switch to Sampler mode to play back samples the ordinary way.

About

Audulus 4

Create and shape sounds with a professional-grade modular synthesizer environment. Explore a vast library of modules for synthesis and sound design, with the option to expand your toolkit with premium instruments and effects. Available across Apple devices for seamless workflow.

Highlights
  • Modular synthesizer environment
  • Sound design tools
  • Real-time audio shaping
  • Extensive module library
  • Premium Pro Modules (in-app purchases)
  • Cross-device iCloud sync
  • AUv3 plugin support
Features
Read full description

Build synthesizers. Design sounds. Shape audio in real time. All with professional-grade, low-latency performance ready for live use — and it’s free. Audulus gives you a complete modular environment at no cost. Its clean, fluid interface stays out of the way so you can focus on what matters: exploring sound. A modular playground with room to grow — from first experiments to advanced designs. Looking for more? Discover the Pro Module series: premium instruments and effects that show what’s possible when world-class sound design meets true modular freedom. Each Pro Module is crafted specifically for Audulus, giving you new ways to expand your sonic toolkit. Available on iPhone, iPad, and Mac — your modular system travels with you. ▶ What People Are Saying: "gem for Apple platforms – gorgeous, fluid" — Peter Kirn, createdigitalmusic.com "stunning!" — Richard Devine, devinesound.net "Remarkable gesture control" — sequencer.de ▶ Join our forum and Discord community! ▶ What You Get: • Complete modular environment — free to download and explore • Pro Module series — premium modules available as in-app purchases • Available on iPhone, iPad, and Mac with iCloud sync • Standalone app or AUv3 plugin • Deep node library for building from scratch • Extensive module library for synthesis and sound design • Multi-channel signal flow for polyphony and complex routing • Next-gen multi-core audio processing • Smooth, high-performance graphics even with massive patches • MIDI I/O with MIDI learn • GLSL shader node for creating advanced visuals • Lua scripting for custom DSP and vector graphics Terms of Use: https://audulus.com/terms.html

Screenshots

Audulus 44 screens

Verdict

The call

The clearest difference is rating: DrumComputer at 4.8 against Audulus 4's 4.3. DrumComputer also leads on review sentiment (81% vs 69%) and ratings volume (621 vs 74). Audulus 4's advantage is device support (3 vs 1). On price, update cadence, ads and in-app purchases 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

Both are free to download. DrumComputer sells 1 one-off in-app purchase and Audulus 4 sells 27 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DrumComputer holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: DrumComputer has 621 ratings behind it against 74, so its average is the more settled of the two. Written reviews point the same way: 81% of DrumComputer's written reviews are positive against 69% of Audulus 4's.

UpkeepUpdate frequency

DrumComputer ships an update every 3 weeks, Audulus 4 monthly. The most recent releases landed on August 7, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 6 level
DrumComputer versus Audulus 4: the parameters behind the verdict, then further details
ParameterDrumComputerAudulus 4
PriceFreeFree
Rating4.8 (621 ratings) — better4.3 (74 ratings)
Positive reviews80.8% of reviews — better69.2% of reviews
Number of ratings621 — better74
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPadiPhone, iPad, Mac — better
Requires iOS17.6 — better18.0
Further details — not scored
Size1.6 GB103 MB
Age rating4+4+
DeveloperSugar Bytes GmbHAudulus LLC

Customer experience

DrumComputer

All ratings621 ratings
Positive95.0%
Neutral2.3%
Negative2.7%
Written reviews146 reviews
Positive80.8%
Neutral8.2%
Negative11.0%

Audulus 4

All ratings74 ratings
Positive82.4%
Neutral4.1%
Negative13.5%
Written reviews78 reviews
Positive69.2%
Neutral10.3%
Negative20.5%

User reviews

DrumComputer

From 621 App Store ratings

What we love

  • 🚀 Best iOS drum machine
  • 👍 Wicked easy to use interface
  • 👍 Great sound and workflow
  • 👍 Powerful and flexible sequencer
  • 👍 Tons of customization options

Room to improve

  • 🐛 Occasional crashes
  • 🔋 High CPU usage and battery drain
  • 👎 Confusing and complex interface
  • 👎 Lack of MIDI mapping for live use
  • 👎 Inability to record beats from pads

Audulus 4

From 74 App Store ratings

What we love

  • ✨ Powerful modular environment
  • 💡 Deep DSP programming capabilities
  • 🎨 Intuitive and beautiful UI
  • 🚀 Seamless workflow across devices
  • 📚 Great for learning synthesis

Room to improve

  • 💸 Expensive in-app purchases/subscriptions
  • ⚠️ Steep learning curve for beginners
  • 📱 UI issues on mobile (scrolling, view obstruction)
  • 📉 High CPU usage
  • ❓ Lack of comprehensive documentation

Bugs and requests

DrumComputer

Reported bugs

3 issues
  • Crashes on startup with iOS 14.2
  • Inability to import samples in some cases
  • MIDI out only supports single channel

Requested features

7 requests
  • Add real-time beat recording
  • Improve MIDI mapping capabilities
  • Add randomization options for tempo, sequence length, and mixing
  • Improve preset management (ability to delete presets)
  • Optimize for better performance and battery life
Show 2 more
  • Add a dedicated envelope for mixer level control
  • Improve signal flow visualization and clarity

Audulus 4

Reported bugs

13 issues
  • iOS 18 compatibility issues (app not working)
  • Save presets but no 'Load' button
  • Undo command issues with DAWs
  • CMD+Z causing data loss
  • Opt+drag not duplicating modules
Show 8 more
  • Plugin window not resizable
  • Menu filtering not functioning properly on iPhone
  • Select and Import buttons not working
  • Blank screen on open
  • App freezes on iPad Pro
  • Black screen on launch after update
  • No modules appearing after iOS 18 update
  • Patches not appearing after iOS 18 update

Requested features

7 requests
  • Add 'Load' button for presets
  • Improve DAW integration (Undo, duplicate)
  • Resizable plugin window
  • More modules (FFT/IFFT, granular buffering)
  • Add CC in module
Show 2 more
  • Sync to host as AUv3
  • Make upgrade path clearer from Audulus 3

In-app purchases

1 purchases

DrumComputer

One-time1
  • DrumComputer Full Version$29.99
27 purchases

Audulus 4

Subscriptions2
  • Audulus Pro (1 Month)7 Days trial$4.991 Month
  • Audulus Pro (1 Year)7 Days trial$29.991 Year
One-time25
  • 1-shot Sample$1.99
  • P-Train$2.99
  • CLK RS-1$3.99
Show 22 more
  • CG-1 Chord Generator$3.99
  • CLK Clock Generator$4.99
  • MetaEnvelope$4.99
  • Modal Percussion$4.99
  • CLK: TimeWarp$4.99
  • CPR-1$4.99
  • LMT-1$4.99
  • MS-FUNC$5.99
  • CLK SS-516$7.99
  • J-23 Reverb$7.99
  • J-23 Effects$7.99
  • CLK GS-1$7.99
  • Chaos LFO Bundle$7.99
  • ARP-1$7.99
  • CPR-3$7.99
  • SynD-K1$7.99
  • TRIKOR VCO$9.99
  • CLK Tools Bundle$9.99
  • Essential Synth Bundle$9.99
  • VCF Bundle 1$9.99
  • J-23 Space Console$14.99
  • Patch Editing$29.99

Questions

Is DrumComputer free?
DrumComputer is free to download, with in-app purchases available.
Is Audulus 4 free?
Audulus 4 is free to download, with in-app purchases available.
Which has better reviews, DrumComputer or Audulus 4?
DrumComputer is rated higher. DrumComputer averages 4.8 out of 5 from 621 ratings, while Audulus 4 averages 4.3 from 74 ratings.
Do DrumComputer or Audulus 4 have ads?
Neither DrumComputer nor Audulus 4 shows ads.
Which is updated more often, DrumComputer or Audulus 4?
DrumComputer ships an update every 3 weeks, and Audulus 4 monthly. Most recently, DrumComputer was updated on August 7, 2026 and Audulus 4 on September 12, 2026.

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