DrumComputer vs Audulus 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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 descriptionHide 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.
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.
- 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
Read full descriptionHide 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
Verdict
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
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.
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.
DrumComputer ships an update every 3 weeks, Audulus 4 monthly. The most recent releases landed on August 7, 2026 and September 12, 2026 respectively.
| Parameter | DrumComputer | Audulus 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (621 ratings) — better | 4.3 (74 ratings) |
| Positive reviews | 80.8% of reviews — better | 69.2% of reviews |
| Number of ratings | 621 — better | 74 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 1.6 GB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | Sugar Bytes GmbH | Audulus LLC |
Customer experience
DrumComputer
Audulus 4
User reviews
DrumComputer
From 621 App Store ratingsWhat 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 ratingsWhat 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 moreShow fewer
- 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 moreShow fewer
- 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 moreShow fewer
- Sync to host as AUv3
- Make upgrade path clearer from Audulus 3
In-app purchases
DrumComputer
- DrumComputer Full Version$29.99
Audulus 4
- Audulus Pro (1 Month)7 Days trial$4.991 Month
- Audulus Pro (1 Year)7 Days trial$29.991 Year
- 1-shot Sample$1.99
- P-Train$2.99
- CLK RS-1$3.99
Show 22 moreShow fewer
- 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








