Comparison

AmenBreakChopper vs 055U4RY

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

Head to head
About

AmenBreakChopper

This music app synchronizes input audio with BPM-synced delay for beat chopping. It allows for 16-beat beat chopping quantized to eighth notes and supports external MIDI controllers for adjustments.

Highlights
  • BPM-synced delay
  • Beat chopping
  • 16-beat quantization
  • Eighth note quantization
  • External MIDI controller support
Features
Read full description

AmenBreakChopperは、入力された音声をBPMに同期したディレイで再生するビートチョッパー・エフェクトです。 BPM同期を取り、8分音符でクオンタイズされた状態で16拍分の長さでのビートチョップを行えます。 外部MIDIコントローラでビートチョップや位置の修正を行うことができます。

About

055U4RY

This app is a unique polyphonic synthesizer designed to evoke horror-themed soundscapes. It features a distinctive visual interface resembling a haunted DOS terminal with a skull motif, offering a variety of synthesis engines and effects for creating unsettling audio.

Highlights
  • 8-voice polyphonic synthesizer
  • 15 synthesis engines
  • Twin chaotic LFOs
  • Shepard-Risset layer
  • State-variable filter
  • Sample-rate reducer and bit-depth crusher
  • Real-time stutter buffer (GLTCH)
Features
Read full description

055U4RY (say it: "ossuary") is an 8-voice polyphonic synthesizer sealed inside a haunted DOS terminal — and, since 1.30, a second plug-in that turns the same machine loose on any audio you feed it. A photographic ASCII skull is the front panel: its jaw hinges open with the amplitude envelope, its eye sockets ignite with the output level, and the whole interface tears, melts and reassembles itself while you play. THE VOICE - 15 synthesis engines: detuned saw/square/triangle unison stacks, sine and sub-oscillators one and two octaves down, two-operator FM, ring modulation and inharmonic partials. Every factory preset is a different engine. - Twin chaotic LFOs that cross-modulate each other's RATE, so pitch and filter drift never repeats. Held notes stay alive and slightly wrong. - A Shepard-Risset layer tuned beneath every note: five windowed partials in an endless downward glissando - the bottomless-pit illusion of classic horror scoring, fused into the oscillator core. - A 19 Hz infrasonic tremolo at the edge of perception. On headphones it is a shiver; on a big system it is pressure. THE CHAIN - State-variable filter, low-pass or band-pass per engine, with resonance that will scream - Sample-rate reducer and bit-depth crusher for terminal-grade lo-fi - Saturating drive stage - GLTCH: a real-time stutter buffer that seizes and re-loops your signal - CRYPT: a damped, pitch-black comb/allpass reverb - GLIDE: exponential portamento up to 1.5 seconds - DOOM: one macro that leans the chaos, the descent and the tremor deeper into the signal PERFORM - 14 knobs, all ASCII, every one audible on every preset - 15 factory presets with per-preset patch memory: your tweaks persist for each preset, and [RESET] restores the factory sound - Two-octave on-screen keyboard with octave transpose and note names - Hardware MIDI in (all sources auto-connect), built-in Bluetooth MIDI pairing, pitch bend, MIDI 2.0 aware - The skull is your meter: jaw = envelope, eyes = level, decay = how hard you push GLTCH 055U4RY FX - THE EFFECT The same app installs a second, separate plug-in. Put it on a drum loop, a guitar, a vocal or a whole mix and run it through the machine: - The full destruction chain as an insert - drive, bit crusher, sample-rate reducer, stutter, filter and the CRYPT reverb - in true stereo - HAUNT: a cross-fed delay whose repeats rot as they decay, with MURK controlling how fast they turn to mud - SYNC: stutters and echoes locked to your host's tempo, 1/16 through 1/1, or free-running - DOOM as an injector: the endless Risset descent and the 19 Hz tremor printed underneath your audio, so anything you feed it gains a bottomless falling drone that was never in the source - Fifteen presets sharing the instrument's names, each a different topology - Wet/dry MIX, output trim, and a skull that reacts to whatever passes through AUv3 + STANDALONE The synth runs standalone with zero setup. Both plug-ins install into your host: AUM, Logic Pro, GarageBand, apeMatrix, WBTRK and any AUv3-compatible DAW, with full parameter automation - "hejluxom: 055U4RY" under instruments, "hejluxom: 055U4RY FX" under effects. One purchase, every platform: iPhone, iPad and Mac. No accounts, no ads, no data collected - your patches never leave the device.

Screenshots

AmenBreakChopper1 screens
055U4RY4 screens

Verdict

The call

The clearest difference is review sentiment: 055U4RY at 100% against AmenBreakChopper's 67%. 055U4RY also leads on rating (5.0 vs 4.5) and update cadence (every 6 days vs every 5 weeks). AmenBreakChopper's advantage is price ($0.99 vs $6.99) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases, monetization model and device support 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

AmenBreakChopper costs $0.99 and 055U4RY $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

055U4RY holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: 055U4RY has 29 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of AmenBreakChopper's written reviews are positive against 100% of 055U4RY's.

UpkeepUpdate frequency

AmenBreakChopper ships an update every 5 weeks, 055U4RY every 6 days. Both last shipped on November 5, 2026.

Scorecard6 real differences · 4 level
AmenBreakChopper versus 055U4RY: the parameters behind the verdict, then further details
ParameterAmenBreakChopper055U4RY
Price$0.99 — better$6.99
Rating4.5 (2 ratings)5.0 (29 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings229 — better
Update frequencyEvery 5 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better17.0
Further details — not scored
Size14 MB2 MB
Age rating4+9+
DeveloperKeisuke KagoshimaLASZLO DOBROVOLSZKI

Customer experience

AmenBreakChopper

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

055U4RY

All ratings28 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AmenBreakChopper

No in-app purchases

None

055U4RY

No in-app purchases

Questions

Is AmenBreakChopper free?
AmenBreakChopper costs $0.99, with no in-app purchases.
Is 055U4RY free?
055U4RY costs $6.99, with no in-app purchases.
Which has better reviews, AmenBreakChopper or 055U4RY?
055U4RY is rated higher. AmenBreakChopper averages 4.5 out of 5 from 2 ratings, while 055U4RY averages 5.0 from 29 ratings.
Do AmenBreakChopper or 055U4RY have ads?
Neither AmenBreakChopper nor 055U4RY shows ads.
Which is updated more often, AmenBreakChopper or 055U4RY?
AmenBreakChopper ships an update every 5 weeks, and 055U4RY every 6 days. Most recently, AmenBreakChopper was updated on November 5, 2026 and 055U4RY on November 5, 2026.

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