Comparison

Fugue Machine vs Atom | Piano Roll 2

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

Head to head
About

Fugue Machine

This music sequencer uses multiple playheads to create complex melodic patterns inspired by Baroque and serialist composition techniques. Manipulate speed, direction, and pitch to generate unique soundscapes.

Highlights
  • Multi-playhead piano roll
  • Manipulate speed, direction, and pitch
  • Create complex melodic patterns
  • Inspired by Baroque and serialist music
  • Supports MIDI, AUv3 MIDI, Ableton Link
  • Inter-App Audio and Audiobus compatibility
Features
Read full description

A music sequencer reimagined with multiple playheads. "How Bach would have made a sequencer." (Create Digital Music) "A musical feat." (Creator's Project) "A new approach to sequencing." (XLR8R) "A next generation music sequencer." (Ask Audio) Fugue Machine Classic is a tool inspired by composition techniques used in Baroque music and Serialism — e.g. Bach’s canons and fugues, and Schoenberg’s twelve-tone technique. The idea was to design a tool to manipulate a melody’s speed, direction, and pitch, as well as play multiple variations of the melody simultaneously. As it turned out, the best implementation for this was to reimagine one of the most fundamental building blocks of all music sequencers: the piano roll. Fugue Machine Classic is the world’s first multi-playhead piano roll. Create a music sequence and play it back with up to four playheads at once — each at various speeds, directions, pitches, and more. Watch the playheads dance, and hear the complex patterns that emerge. It’s mesmerizing. Fugue Machine Classic supports iPhone, iPad, MIDI, AUv3 MIDI, Ableton Link, Audiobus, Audiobus 3 MIDI, and Inter-App Audio. Thanks to the AUv3 standard, you can run multiple instances of Fugue Machine Classic on a single device when hosted in an AUv3 MIDI host app — like AUM, Logic Pro for iPad, Loopy Pro, and Cubasis.

About

Atom | Piano Roll 2

This advanced AUv3 MIDI editor and sequencer allows for complex musical composition and live performance. It functions as a plugin within compatible music hosts, enabling users to create intricate patterns, launch clips, and customize workflows with scripting.

Highlights
  • AUv3 MIDI note editor
  • Modular sequencer
  • Clip launcher
  • Step input and real-time recording
  • Customizable layouts and themes
  • Scripting for custom workflows
  • Ghost lanes for harmonies and counterpoint
Features
Read full description

Reached #1 on the App Store in the Top Paid Music App Category. The most advanced AUv3 MIDI note editor, modular sequencer and clip launcher on iOS. Notes: - This plugin does not run as a standalone app and requires a compatible host. - MIDI is not sound. To make sound you'll have to feed the MIDI into a synthesizer or instrument app. Bring your own synths! - Hardware integration with controllers requires iCloud Drive. Compatibility: - Special integration with hosts: AUM and Drambo. - Tested hosts: ApeMatrix, Audiobus, BeatMaker, Cubasis, MTS, Zenbeats. Limited support by NanoStudio 2. Not supported by GarageBand. Build live sets for clip launching, or an entire track with unlimited length. Play the whole sequence, or adjust the loop markers to iterate over a single section. Step input, or record as played, all with perfect timing accuracy. Write your own code, share it with the community! You can control hardware devices, adding support for new controllers or completely changing the behavior of existing ones. Build your own styling with custom layouts and themes. Change colors, fonts, sizes… make it yours! Piano Roll 2 takes all the features you love about the first installment, and expands them into an entirely new breed of modular sequencer and clip launcher, unparalleled in flexibility and depth on iOS. We redesigned it from the ground up to incorporate a plethora of new features and workflows. - It's a sequencer that augments the capabilities of your host or DAW. - It's a composition tool that helps you to write beautiful melodies and complex polyrhythmic patterns. - It's a clip launcher that integrates seamlessly with supported hardware controllers. - It's a scripting playground that lets you customize your workflow with code. - It's a swiss-army knife of possibilities when working with MIDI. Here are just some of the many use cases this modular architecture supports: - Build live sets for clip launching. - Compose patterns with touch, Apple Trackpad and Apple Pencil, or use the step input mode to write melodies step-by-step. - Capture performances in real time and export your patterns as MIDI files. - Import and edit MIDI files created in other apps, or from commercial packs. - Record generated MIDI of other plugins or sequencers. - Write harmonies and counterpoint melodies by superimposing the patterns of other Atoms as ghost lanes. - Construct complex polyrhythms by taking advantage of custom time signatures and grid fractions. - Sequence the sequencers for full modular mayhem.

Screenshots

Fugue Machine4 screens
Atom | Piano Roll 23 screens

Verdict

The call

The clearest difference is rating: Fugue Machine at 4.9 against Atom | Piano Roll 2's 4.5. Fugue Machine also leads on review sentiment (90% vs 68%) and ratings volume (624 vs 96). 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

Fugue Machine costs $19.99 and Atom | Piano Roll 2 $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Fugue Machine holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Fugue Machine has 624 ratings behind it against 96, so its average is the more settled of the two. Written reviews point the same way: 90% of Fugue Machine's written reviews are positive against 68% of Atom | Piano Roll 2's.

UpkeepUpdate frequency

Fugue Machine ships an update every 8 days, Atom | Piano Roll 2 weekly. Both last shipped on October 29, 2026.

Scorecard3 real differences · 7 level
Fugue Machine versus Atom | Piano Roll 2: the parameters behind the verdict, then further details
ParameterFugue MachineAtom | Piano Roll 2
Price$19.99$19.99
Rating4.9 (624 ratings) — better4.5 (96 ratings)
Positive reviews90.3% of reviews — better67.5% of reviews
Number of ratings624 — better96
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better12.1
Further details — not scored
Size8 MB16 MB
Age rating4+4+
DeveloperAlexandernautVictor Porof

Customer experience

Fugue Machine

All ratings623 ratings
Positive96.5%
Neutral1.4%
Negative2.1%
Written reviews238 reviews
Positive90.3%
Neutral5.0%
Negative4.6%

Atom | Piano Roll 2

All ratings96 ratings
Positive85.4%
Neutral5.2%
Negative9.4%
Written reviews80 reviews
Positive67.5%
Neutral11.3%
Negative21.3%

Bugs and requests

Fugue Machine

Not enough reviews yet to summarise bugs or requests.

Atom | Piano Roll 2

Reported bugs

13 issues
  • Crashes when saving sessions in AUM
  • Notes get corrupted during playback
  • White background display issue
  • Position indicator jumps when loop doesn't start at bar 1
  • Buttons for adding bars disappear after certain point
Show 8 more
  • MIDI input processed incorrectly even in passthrough mode
  • Notes don't play after being added to piano roll
  • App doesn't appear in AU list on MacBook Pro
  • Launchpad Pro MK3 session clip launch mode not working
  • iOS 12 compatibility crashes
  • Incompatibility with Cubasis 3 and GarageBand
  • Responsiveness issues with Apple Pencil (resolved in updates)
  • GUI rendering problems on some iPad models

Requested features

17 requests
  • MIDI CC editing and visualization
  • Mouse and trackpad input support
  • Logic Pro for iPad support
  • Chord entry in step input mode
  • Velocity editing improvements and visual feedback
Show 12 more
  • Dark mode option
  • Drag and drop from Suggester
  • Time stretch/MIDI stretch functionality
  • Standalone mode without requiring AUM
  • Launchpad Pro MK3 full compatibility
  • Grid-style interface similar to Launchpad
  • Step input for multiple notes simultaneously
  • Better zoom and selection for longer patterns
  • Undo last recording feature
  • Parameter automation curves
  • Easier MIDI channel switching
  • Tutorials and documentation

In-app purchases

None

Fugue Machine

No in-app purchases

None

Atom | Piano Roll 2

No in-app purchases

Questions

Is Fugue Machine free?
Fugue Machine costs $19.99, with no in-app purchases.
Is Atom | Piano Roll 2 free?
Atom | Piano Roll 2 costs $19.99, with no in-app purchases.
Which has better reviews, Fugue Machine or Atom | Piano Roll 2?
Fugue Machine is rated higher. Fugue Machine averages 4.9 out of 5 from 624 ratings, while Atom | Piano Roll 2 averages 4.5 from 96 ratings.
Do Fugue Machine or Atom | Piano Roll 2 have ads?
Neither Fugue Machine nor Atom | Piano Roll 2 shows ads.
Which is updated more often, Fugue Machine or Atom | Piano Roll 2?
Fugue Machine ships an update every 8 days, and Atom | Piano Roll 2 weekly. Most recently, Fugue Machine was updated on October 29, 2026 and Atom | Piano Roll 2 on October 29, 2026.

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