Comparison

Attack Drums vs GhostChorus

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

Head to head
About

Attack Drums

This app is a powerful sound engine and pattern sequencer inspired by a classic VST plugin. It excels at creating drum sounds but can also be used for vocals and other instruments, featuring a unique text-based vocoder.

Highlights
  • 24-part sound engine
  • Pattern sequencer
  • Phrase Vocoder (text-based)
  • Versatile effects section
  • Inter-App Audio & Audiobus 3 support
  • MIDI Sync
  • Export song to audio file
Read full description

Attack Drums is a synthesizer designed mainly for drum sounds, but the powerful sound engine can also be used for everything else - including vocals. Based on the Waldorf Attack VST PlugIn from 2001, it consists of a 24-part sound engine, now packed with a pattern sequencer and a versatile effects section. One highlight of the effects section is the new Phrase Vocoder, a vocoder that uses written text instead of spoken words. Lyrics in - song out, adjust gender as you have always wanted! Just like Waldorf Nave, Attack Drums is a seriously in-depth musical instrument - easy and fun to use, but a sonic beast at its core! Specifications: -24 Sounds -Four independent effect slots with selectable effect: *Delay *Equalizer *Overdrive *Phaser *Flanger *Chorus *Phrase Vocoder -Reverb -Compressor -Pattern Sequencer -999 Patterns -Polyphonic steps - up to 8 notes per step -Fractional track/step timing -Audiobus 3 -Inter-App Audio -MIDI Settings -MIDI Sync -Loop function -Export song to audio file -AudioCopy / AudioPaste -Content control via iTunes File Sharing -Trigger Pads -Mixer -Recording

About

GhostChorus

Enhance your audio with a hybrid reverb and chorus effect. Create spatial depth, spectral movement, and otherworldly dimensions for any sound. Offers professional-grade processing with an artist-friendly design for producers, sound designers, and performers.

Highlights
  • Hybrid reverb and chorus effect
  • Spatial depth and spectral movement
  • Artist-friendly design
  • AUv3 plugin format
  • Global preset manager
  • Advanced sidechain control
Features
Read full description

GhostChorus: Beautiful Reverb + Chorus From Beyond! Transform your tracks with GhostChorus - where spatial depth meets spectral movement. From haunting reverb to rich chorus textures, discover how easy it is to add gorgeous and otherworldly dimensions to any sound! Professional-grade processing with an artist-friendly design. Instantly Transform Your Sound: * Transform static sounds in haunting, reverberating spaces * Add ghostly chorus depth to any source * Create immersive, evolving atmospheres * Design ethereal textures that float in the mix * Build captivating and realistic spatial environments * Give instruments that perfect presence and vibe Made for Everyone: * Producers: Add dimension that captures ears and imagination * Sound Designers: Give your sounds a place to haunt * Live Performers: Shape ethereal spaces in real-time * Beginners: Get beautiful and balanced Pro results from day one * Experts: Discover endless creative depths Professional Features Made Musical: 1. “Ghost” Reverb - Our unique reverb system creates rich, natural spaces with intelligent early reflections and smooth decay. Create anything from intimate rooms to vast ethereal landscapes - always musical, always perfectly balanced, and exceptional for any genre. 2. Dynamic Chorus Engine - Shape your sound with our advanced chorus module. Seamlessly blend between subtle movement and rich modulation. From gentle thickening to deep, evolving textures, perfect musical chorus is at your fingertips. 3. True Control - Experience musical tone shaping with our multi-stage processing. Powered by dynamic width control and precise presence damping, it delivers everything from subtle enhancement to full spectral transformation. Push it as hard as you want to create the space you need. 4. Mix-Ready Processing - Our intelligent "Sit" control and adaptive output stage ensure professional results every time. Shape the perfect frequency balance, push sounds forward, or pull them back - everything sits flawlessly in your mix. 5. Advanced Sidechain Control - Let your music drive the effects. Modulate the ghostly space with drums, deepen chorus with bass, or make the chorus rate follow your vocals. Complex effects become surprisingly simple with our artist friendly design. 6. ValueView parameter display delivers instant feedback that floats above your finger, ensuring precise control without losing sight of your adjustments, even on the smallest screens. Technical Excellence: * AUv3 Plugin Format works in your favorite DAWs (Logic Pro, GarageBand, LoopyPro, Cubasis 3, and other iOS/iPadOS DAWs that support AUv3) * Support for automation of all parameters * Global Preset Manager with factory and user presets (including 10 carefully crafted factory presets) * Precision parameter smoothing for artifact-free modulation * Professional +/-12dB output with automatic gain compensation * Built-in anti-aliasing with high-quality oversampling * Intelligent Dual-shelf tone control for perfect mix placement * Zero-latency real-time processing Transform Your Sound Today: Whether you're adding subtle space or pushing creative boundaries beyond the mortal plane, GhostChorus adapts to your style. Get started in seconds, then discover the depths of this unique hybrid Reverb + Chorus plugin as you explore. Give Your Mix a Spectral Dimension with Beautiful Reverb + Chorus From Beyond!

Screenshots

GhostChorus3 screens

Verdict

The call

The clearest difference is review sentiment: GhostChorus at 100% against Attack Drums's 34%. GhostChorus also leads on rating (5.0 vs 4.4) and price ($9.99 vs $14.99). Attack Drums's advantage is update cadence (every 2 weeks vs every 5 weeks) and ratings volume (23 vs 3). On ads, in-app purchases, monetization model and iOS requirement 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

Attack Drums costs $14.99 and GhostChorus $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GhostChorus holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Attack Drums has 23 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 34% of Attack Drums's written reviews are positive against 100% of GhostChorus's.

UpkeepUpdate frequency

Attack Drums ships an update every 2 weeks, GhostChorus every 5 weeks. The most recent releases landed on September 12, 2026 and September 17, 2026 respectively.

Scorecard6 real differences · 4 level
Attack Drums versus GhostChorus: the parameters behind the verdict, then further details
ParameterAttack DrumsGhostChorus
Price$14.99$9.99 — better
Rating4.4 (23 ratings)5.0 (3 ratings) — better
Positive reviews34.2% of reviews100.0% of reviews — better
Number of ratings23 — better3
Update frequencyEvery 2 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.012.0
Further details — not scored
Size97 MB12 MB
Age rating4+4+
DeveloperWaldorf MusicSimon Alexander

Customer experience

Attack Drums

All ratings23 ratings
Positive87.0%
Neutral4.3%
Negative8.7%
Written reviews73 reviews
Positive34.2%
Neutral13.7%
Negative52.1%

GhostChorus

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Attack Drums

Reported bugs

21 issues
  • Crashes when loading own samples
  • Lag with MIDI clock sync
  • Inconsistent MIDI response and routing
  • Low velocity response
  • Transport controls not showing in DAWs
Show 16 more
  • App crashes on startup
  • App won't open on iOS 9
  • Display scaling issues on iPad mini
  • Sound designer page not working on iPad 2
  • Copy bug
  • Sequencer limited to one bar
  • Random velocity on pads
  • Crashes with Audiobus
  • Screen doesn't fit on iPad mini
  • Controls not working on iPad mini
  • Sound cut out
  • Locks up on iPad 2
  • Not compatible with iPad 2
  • Sluggish and slow performance
  • App closes for no reason
  • Display on iPad mini scaled incorrectly

Requested features

19 requests
  • Ableton Link support
  • Improved MIDI sync
  • Smoother IAA and MIDI integration
  • More pattern steps (64+)
  • Support for triplets and higher note divisions
Show 14 more
  • Dropbox integration
  • Disable opening animation
  • Separate outputs in iOS
  • Auto-envelope setting for samples
  • Parameter automation
  • MIDI CC parameter control
  • MIDI port/channel selection
  • Looping multiple patterns for jamming
  • Subfolders for samples
  • Interface facelift
  • Live tweaking of FX, rolls, stutters
  • Parameter locks
  • Triplet grids option
  • Ability to export MIDI patterns

GhostChorus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Attack Drums

No in-app purchases

None

GhostChorus

No in-app purchases

Questions

Is Attack Drums free?
Attack Drums costs $14.99, with no in-app purchases.
Is GhostChorus free?
GhostChorus costs $9.99, with no in-app purchases.
Which has better reviews, Attack Drums or GhostChorus?
GhostChorus is rated higher. Attack Drums averages 4.4 out of 5 from 23 ratings, while GhostChorus averages 5.0 from 3 ratings.
Do Attack Drums or GhostChorus have ads?
Neither Attack Drums nor GhostChorus shows ads.
Which is updated more often, Attack Drums or GhostChorus?
Attack Drums ships an update every 2 weeks, and GhostChorus every 5 weeks. Most recently, Attack Drums was updated on September 12, 2026 and GhostChorus on September 17, 2026.

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